Author: "HUNG, LW" / Publication Year Range: Last 50 years - Searchworks@Jio Institute Digital Library Search Results

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224 results on '"HUNG, LW"'

1. The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics from 10 to 100 au

Author: Nielsen, EL, De Rosa, RJ, Macintosh, B, Wang, JJ, Ruffio, JB, Chiang, E, Marley, MS, Saumon, D, Savransky, D, Mark Ammons, S, Bailey, VP, Barman, T, Blain, C, Bulger, J, Burrows, A, Chilcote, J, Cotten, T, Czekala, I, Doyon, R, Duchene, G, Esposito, TM, Fabrycky, D, Fitzgerald, MP, Follette, KB, Fortney, JJ, Gerard, BL, Goodsell, SJ, Graham, JR, Greenbaum, AZ, Hibon, P, Hinkley, S, Hirsch, LA, Hom, J, Hung, LW, Ilene Dawson, R, Ingraham, P, Kalas, P, Konopacky, Q, Larkin, JE, Lee, EJ, Lin, JW, Maire, J, Marchis, F, Marois, C, Metchev, S, Millar-Blanchaer, MA, Morzinski, KM, Oppenheimer, R, Palmer, D, Patience, J, Perrin, M, Poyneer, L, Pueyo, L, Rafikov, RR, Rajan, A, Rameau, J, Rantakyrö, FT, Ren, B, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Tallis, M, Thomas, S, Ward-Duong, K, and Wolff, S
Subjects: instrumentation: adaptive optics, planetary systems, planets and satellites: detection, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager Exoplanet Survey. This subsample includes six detected planets and three brown dwarfs; from these detections and our contrast curves we infer the underlying distributions of substellar companions with respect to their mass, semimajor axis, and host stellar mass. We uncover a strong correlation between planet occurrence rate and host star mass, with stars M ∗ >1.5 M o more likely to host planets with masses between 2 and 13M Jup and semimajor axes of 3-100 au at 99.92% confidence. We fit a double power-law model in planet mass (m) and semimajor axis (a) for planet populations around high-mass stars (M ∗ >1.5 M o) of the form , finding α = -2.4 +0.8 and β = -2.0 +0.5, and an integrated occurrence rate of % between 5-13M Jup and 10-100 au. A significantly lower occurrence rate is obtained for brown dwarfs around all stars, with % of stars hosting a brown dwarf companion between 13-80M Jup and 10-100 au. Brown dwarfs also appear to be distributed differently in mass and semimajor axis compared to giant planets; whereas giant planets follow a bottom-heavy mass distribution and favor smaller semimajor axes, brown dwarfs exhibit just the opposite behaviors. Comparing to studies of short-period giant planets from the radial velocity method, our results are consistent with a peak in occurrence of giant planets between ∼1 and 10 au. We discuss how these trends, including the preference of giant planets for high-mass host stars, point to formation of giant planets by core/pebble accretion, and formation of brown dwarfs by gravitational instability.
Published: 2019

2. Direct Imaging of the HD 35841 Debris Disk: A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST/STIS

Author: Esposito, TM, Duchne, G, Kalas, P, Rice, M, Choquet, I, Ren, B, Perrin, MD, Chen, CH, Arriaga, P, Chiang, E, Nielsen, EL, Graham, JR, Wang, JJ, Rosa, RJD, Follette, KB, Ammons, SM, Ansdell, M, Bailey, VP, Barman, T, Bruzzone, JS, Bulger, J, Chilcote, J, Cotten, T, Doyon, R, Fitzgerald, MP, Goodsell, SJ, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Konopacky, Q, Larkin, JE, Macintosh, B, Maire, J, Marchis, F, Marois, C, Mazoyer, J, Metchev, S, Millar-Blanchaer, MA, Oppenheimer, R, Palmer, D, Patience, J, Poyneer, L, Pueyo, L, Rajan, A, Rameau, J, Rantakyrö, FT, Ryan, D, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Wallace, JK, Ward-Duong, K, Wiktorowicz, S, and Wolff, S
Subjects: circumstellar matter, infrared: planetary systems, stars: individual, techniques: high angular resolution, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present new high resolution imaging of a light-scattering dust ring and halo around the young star HD 35841. Using spectroscopic and polarimetric data from the Gemini Planet Imager in H-band (1.6 μm), we detect the highly inclined (i = 85°) ring of debris down to a projected separation of ∼12 au (∼0.″12) for the first time. Optical imaging from HST/STIS shows a smooth dust halo extending outward from the ring to >140 au (>1.″4). We measure the ring's scattering phase function and polarization fraction over scattering angles of 22°-125°, showing a preference for forward scattering and a polarization fraction that peaks at ∼30% near the ansae. Modeling of the scattered-light disk indicates that the ring spans radii of ∼60-220 au, has a vertical thickness similar to that of other resolved dust rings, and contains grains as small as 1.5 μm in diameter. These models also suggest the grains have a low porosity, are more likely to consist of carbon than astrosilicates, and contain significant water ice. The halo has a surface brightness profile consistent with that expected from grains pushed by radiation pressure from the main ring onto highly eccentric but still bound orbits. We also briefly investigate arrangements of a possible inner disk component implied by our spectral energy distribution models, and speculate about the limitations of Mie theory for doing detailed analyses of debris disk dust populations.
Published: 2018

3. GPI Spectra of HR 8799 c, d, and e from 1.5 to 2.4 μm with KLIP Forward Modeling

Author: Greenbaum, AZ, Pueyo, L, Ruffio, JB, Wang, JJ, Rosa, RJD, Aguilar, J, Rameau, J, Barman, T, Marois, C, Marley, MS, Konopacky, Q, Rajan, A, Macintosh, B, Ansdell, M, Arriaga, P, Bailey, VP, Bulger, J, Burrows, AS, Chilcote, J, Cotten, T, Doyon, R, Duchêne, G, Fitzgerald, MP, Follette, KB, Gerard, B, Goodsell, SJ, Graham, JR, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Larkin, JE, Maire, J, Marchis, F, Metchev, S, Millar-Blanchaer, MA, Nielsen, EL, Norton, A, Oppenheimer, R, Palmer, D, Patience, J, Perrin, MD, Poyneer, L, Rantakyrö, FT, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Wallace, JK, Ward-Duong, K, Wiktorowicz, S, and Wolff, S
Subjects: planets and satellites: gaseous planets, stars: individual, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We explore KLIP forward modeling spectral extraction on Gemini Planet Imager coronagraphic data of HR 8799, using PyKLIP, and show algorithm stability with varying KLIP parameters. We report new and re-reduced spectrophotometry of HR 8799 c, d, and e in the H and K bands. We discuss a strategy for choosing optimal KLIP PSF subtraction parameters by injecting simulated sources and recovering them over a range of parameters. The K1/K2 spectra for HR 8799 c and d are similar to previously published results from the same data set. We also present a K-band spectrum of HR 8799 e for the first time and show that our H-band spectra agree well with previously published spectra from the VLT/SPHERE instrument. We show that HR 8799 c and d show significant differences in their H and K spectra, but do not find any conclusive differences between d and e, nor between c and e, likely due to large error bars in the recovered spectrum of e. Compared to M-, L-, and T-type field brown dwarfs, all three planets are most consistent with mid- and late-L spectral types. All objects are consistent with low gravity, but a lack of standard spectra for low gravity limit the ability to fit the best spectral type. We discuss how dedicated modeling efforts can better fit HR 8799 planets' near-IR flux, as well as how differences between the properties of these planets can be further explored.
Published: 2018

4. Automated data processing architecture for the gemini planet imager exoplanet survey

Author: Wang, JJ, Perrin, MD, Savransky, D, Arriaga, P, Chilcote, JK, De Rosa, RJ, Millar-Blanchaer, MA, Marois, C, Rameau, J, Wolff, SG, Shapiro, J, Ruffio, JB, Maire, J, Marchis, F, Graham, JR, Macintosh, B, Mark Ammons, S, Bailey, VP, Barman, TS, Bruzzone, S, Bulger, J, Cotton, T, Doyon, R, Duchêne, G, Fitzgerald, MP, Follette, KB, Goodsell, S, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Konopacky, QM, Larkin, JE, Marley, MS, Metchev, S, Nielsen, EL, Oppenheimer, R, Palmer, DW, Patience, J, Poyneer, LA, Pueyo, L, Rajan, A, Rantakyrö, FT, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Kent Wallace, J, Ward-Duong, K, and Wiktorowicz, SJ
Subjects: high contrast imaging, exoplanets, circumstellar disks, data processing, Gemini planet imager, Data Cruncher, astro-ph.IM, astro-ph.EP, Mathematical Sciences, Physical Sciences
Abstract: The Gemini Planet Imager Exoplanet Survey (GPIES) is a multiyear direct imaging survey of 600 stars to discover and characterize young Jovian exoplanets and their environments. We have developed an automated data architecture to process and index all data related to the survey uniformly. An automated and flexible data processing framework, which we term the Data Cruncher, combines multiple data reduction pipelines (DRPs) together to process all spectroscopic, polarimetric, and calibration data taken with GPIES. With no human intervention, fully reduced and calibrated data products are available less than an hour after the data are taken to expedite follow up on potential objects of interest. The Data Cruncher can run on a supercomputer to reprocess all GPIES data in a single day as improvements are made to our DRPs. A backend MySQL database indexes all files, which are synced to the cloud, and a front-end web server allows for easy browsing of all files associated with GPIES. To help observers, quicklook displays show reduced data as they are processed in real time, and chatbots on Slack post observing information as well as reduced data products. Together, the GPIES automated data processing architecture reduces our workload, provides real-Time data reduction, optimizes our observing strategy, and maintains a homogeneously reduced dataset to study planet occurrence and instrument performance.
Published: 2018

5. Evidence that the directly imaged planet HD 131399 Ab Is a Background Star

Author: Nielsen, EL, Rosa, RJD, Rameau, J, Wang, JJ, Esposito, TM, Millar-Blanchaer, MA, Marois, C, Vigan, A, Ammons, SM, Artigau, E, Bailey, VP, Blunt, S, Bulger, J, Chilcote, J, Cotten, T, Doyon, R, Duchêne, G, Fabrycky, D, Fitzgerald, MP, Follette, KB, Gerard, BL, Goodsell, SJ, Graham, JR, Greenbaum, AZ, Hibon, P, Hinkley, S, Hung, LW, Ingraham, P, Jensen-Clem, R, Kalas, P, Konopacky, Q, Larkin, JE, MacIntosh, B, Maire, J, Marchis, F, Metchev, S, Morzinski, KM, Murray-Clay, RA, Oppenheimer, R, Palmer, D, Patience, J, Perrin, M, Poyneer, L, Pueyo, L, Rafikov, RR, Rajan, A, Rantakyrö, FT, Ruffio, JB, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Wallace, JK, Ward-Duong, K, Wiktorowicz, S, and Wolff, S
Subjects: astrometry, instrumentation: adaptive optics, planets and satellites: detection, stars: individual, techniques: image processing, techniques: spectroscopic, astro-ph.EP, astro-ph.SR, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present evidence that the recently discovered, directly imaged planet HD 131399 Ab is a background star with nonzero proper motion. From new JHK1L′ photometry and spectroscopy obtained with the Gemini Planet Imager, VLT/SPHERE, and Keck/NIRC2, and a reanalysis of the discovery data obtained with VLT/SPHERE, we derive colors, spectra, and astrometry for HD 131399 Ab. The broader wavelength coverage and higher data quality allow us to reinvestigate its status. Its near-infrared spectral energy distribution excludes spectral types later than L0 and is consistent with a K or M dwarf, which are the most likely candidates for a background object in this direction at the apparent magnitude observed. If it were a physically associated object, the projected velocity of HD 131399 Ab would exceed escape velocity given the mass and distance to HD 131399 A. We show that HD 131399 Ab is also not following the expected track for a stationary background star at infinite distance. Solving for the proper motion and parallax required to explain the relative motion of HD 131399 Ab, we find a proper motion of 12.3 mas yr-1. When compared to predicted background objects drawn from a galactic model, we find this proper motion to be high but consistent with the top 4% fastest-moving background stars. From our analysis, we conclude that HD 131399 Ab is a background K or M dwarf.
Published: 2017

6. Characterizing 51 Eri b from 1 to 5 μm: A Partly Cloudy Exoplanet

Author: Rajan, A, Rameau, J, Rosa, RJD, Marley, MS, Graham, JR, Macintosh, B, Marois, C, Morley, C, Patience, J, Pueyo, L, Saumon, D, Ward-Duong, K, Ammons, SM, Arriaga, P, Bailey, VP, Barman, T, Bulger, J, Burrows, AS, Chilcote, J, Cotten, T, Czekala, I, Doyon, R, Duchêne, G, Esposito, TM, Fitzgerald, MP, Follette, KB, Fortney, JJ, Goodsell, SJ, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Johnson-Groh, M, Kalas, P, Konopacky, Q, Lafrenière, D, Larkin, JE, Maire, J, Marchis, F, Metchev, S, Millar-Blanchaer, MA, Morzinski, KM, Nielsen, EL, Oppenheimer, R, Palmer, D, Patel, RI, Perrin, M, Poyneer, L, Rantakyrö, FT, Ruffio, JB, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Vasisht, G, Wallace, JK, Wang, JJ, Wiktorowicz, S, and Wolff, S
Subjects: instrumentation: adaptive optics, planets and satellites: atmospheres, planets and satellites: composition, planets and satellites: gaseous planets, stars: individual, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present spectrophotometry spanning 1-5 μm of 51 Eridani b, a 2-10 planet discovered by the Gemini Planet Imager Exoplanet Survey. In this study, we present new K1 (1.90-2.19 μm) and K2 (2.10-2.40 μm) spectra taken with the Gemini Planet Imager as well as an updated L P (3.76 μm) and new M S (4.67 μm) photometry from the NIRC2 Narrow camera. The new data were combined with J (1.13-1.35 μm) and H (1.50-1.80 μm) spectra from the discovery epoch with the goal of better characterizing the planet properties. The 51 Eri b photometry is redder than field brown dwarfs as well as known young T-dwarfs with similar spectral type (between T4 and T8), and we propose that 51 Eri b might be in the process of undergoing the transition from L-type to T-type. We used two complementary atmosphere model grids including either deep iron/silicate clouds or sulfide/salt clouds in the photosphere, spanning a range of cloud properties, including fully cloudy, cloud-free, and patchy/intermediate-opacity clouds. The model fits suggest that 51 Eri b has an effective temperature ranging between 605 and 737 K, a solar metallicity, and a surface gravity of log(g) = 3.5-4.0 dex, and the atmosphere requires a patchy cloud atmosphere to model the spectral energy distribution (SED). From the model atmospheres, we infer a luminosity for the planet of -5.83 to -5.93 (logL/L⊙), leaving 51 Eri b in the unique position of being one of the only directly imaged planets consistent with having formed via a cold-start scenario. Comparisons of the planet SED against warm-start models indicate that the planet luminosity is best reproduced by a planet formed via core accretion with a core mass between 15 and 127 M⊕.
Published: 2017

7. Improving and Assessing Planet Sensitivity of the GPI Exoplanet Survey with a Forward Model Matched Filter

Author: Ruffio, JB, Macintosh, B, Wang, JJ, Pueyo, L, Nielsen, EL, Rosa, RJD, Czekala, I, Marley, MS, Arriaga, P, Bailey, VP, Barman, T, Bulger, J, Chilcote, J, Cotten, T, Doyon, R, Duchene, G, Fitzgerald, MP, Follette, KB, Gerard, BL, Goodsell, SJ, Graham, JR, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Konopacky, Q, Larkin, JE, Maire, J, Marchis, F, Marois, C, Metchev, S, Millar-Blanchaer, MA, Morzinski, KM, Oppenheimer, R, Palmer, D, Patience, J, Perrin, M, Poyneer, L, Rajan, A, Rameau, J, Rantakyrö, FT, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Wallace, JK, Ward-Duong, K, Wiktorowicz, S, and Wolff, S
Subjects: instrumentation: adaptive optics, methods: statistical, planetary systems, surveys, techniques: high angular resolution, techniques: image processing, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract: We present a new matched-filter algorithm for direct detection of point sources in the immediate vicinity of bright stars. The stellar point-spread function (PSF) is first subtracted using a Karhunen-Loéve image processing (KLIP) algorithm with angular and spectral differential imaging (ADI and SDI). The KLIP-induced distortion of the astrophysical signal is included in the matched-filter template by computing a forward model of the PSF at every position in the image. To optimize the performance of the algorithm, we conduct extensive planet injection and recovery tests and tune the exoplanet spectra template and KLIP reduction aggressiveness to maximize the signal-to-noise ratio (S/N) of the recovered planets. We show that only two spectral templates are necessary to recover any young Jovian exoplanets with minimal S/N loss. We also developed a complete pipeline for the automated detection of point-source candidates, the calculation of receiver operating characteristics (ROC), contrast curves based on false positives, and completeness contours. We process in a uniform manner more than 330 data sets from the Gemini Planet Imager Exoplanet Survey and assess GPI typical sensitivity as a function of the star and the hypothetical companion spectral type. This work allows for the first time a comparison of different detection algorithms at a survey scale accounting for both planet completeness and false-positive rate. We show that the new forward model matched filter allows the detection of 50% fainter objects than a conventional cross-correlation technique with a Gaussian PSF template for the same false-positive rate.
Published: 2017

8. An Optical/Near-infrared Investigation of HD 100546 b with the Gemini Planet Imager and MagAO

Author: Rameau, J, Follette, KB, Pueyo, L, Marois, C, MacIntosh, B, Millar-Blanchaer, M, Wang, JJ, Vega, D, Doyon, R, Lafrenire, D, Nielsen, EL, Bailey, V, Chilcote, JK, Close, LM, Esposito, TM, Males, JR, Metchev, S, Morzinski, KM, Ruffio, JB, Wolff, SG, Ammons, SM, Barman, TS, Bulger, J, Cotten, T, Rosa, RJD, Duchene, G, Fitzgerald, MP, Goodsell, S, Graham, JR, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Konopacky, Q, Larkin, JE, Maire, J, Marchis, F, Oppenheimer, R, Palmer, D, Patience, J, Perrin, MD, Poyneer, L, Rajan, A, Rantakyrö, FT, Marley, MS, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Wallace, JK, Ward-Duong, K, and Wiktorowicz, S
Subjects: instrumentation: adaptive optics, planet-disk interactions, planetary systems, stars: individual, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present H band spectroscopic and Hμ photometric observations of HD 100546 obtained with the Gemini Planet Imager and the Magellan Visible AO camera. We detect H band emission at the location of the protoplanet HD 100546 b, but show that the choice of data processing parameters strongly affects the morphology of this source. It appears point-like in some aggressive reductions, but rejoins an extended disk structure in the majority of the others. Furthermore, we demonstrate that this emission appears stationary on a timescale of 4.6 years, inconsistent at the 2σ level with a Keplerian clockwise orbit at 59 au in the disk plane. The H band spectrum of the emission is inconsistent with any type of low effective temperature object or accreting protoplanetary disk. It strongly suggests a scattered-light origin, as this is consistent with the spectrum of the star and the spectra extracted at other locations in the disk. A non-detection at the 5σ level of HD 100546 b in differential Hμ imaging places an upper limit, assuming the protoplanet lies in a gap free of extinction, on the accretion luminosity of 1.7 ? 10-4 L o and for 1 R Jup. These limits are comparable to the accretion luminosity and accretion rate of T-Tauri stars or LkCa 15 b. Taken together, these lines of evidence suggest that the H band source at the location of HD 100546 b is not emitted by a planetary photosphere or an accreting circumplanetary disk but is a disk feature enhanced by the point-spread function subtraction process. This non-detection is consistent with the non-detection in the K band reported in an earlier study but does not exclude the possibility that HD 100546 b is deeply embedded.
Published: 2017

9. Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO

Author: Follette, KB, Rameau, J, Dong, R, Pueyo, L, Close, LM, Duchêne, G, Fung, J, Leonard, C, MacIntosh, B, Males, JR, Marois, C, Millar-Blanchaer, MA, Morzinski, KM, Mullen, W, Perrin, M, Spiro, E, Wang, J, Ammons, SM, Bailey, VP, Barman, T, Bulger, J, Chilcote, J, Cotten, T, De Rosa, RJ, Doyon, R, Fitzgerald, MP, Goodsell, SJ, Graham, JR, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Konopacky, Q, Larkin, JE, Maire, J, Marchis, F, Metchev, S, Nielsen, EL, Oppenheimer, R, Palmer, D, Patience, J, Poyneer, L, Rajan, A, Rantakyrö, FT, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Vega, D, Wallace, JK, Ward-Duong, K, Wiktorowicz, S, and Wolff, S
Subjects: instrumentation: adaptive optics, planet-disk interaction, protoplanetary disk, stars: individual, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present optical and near-infrared high-contrast images of the transitional disk HD 100546 taken with the Magellan Adaptive Optics system (MagAO) and the Gemini Planet Imager (GPI). GPI data include both polarized intensity and total intensity imagery, and MagAO data are taken in Simultaneous Differential Imaging mode at Hα. The new GPI H-band total intensity data represent a significant enhancement in sensitivity and field rotation compared to previous data sets and enable a detailed exploration of substructure in the disk. The data are processed with a variety of differential imaging techniques (polarized, angular, reference, and simultaneous differential imaging) in an attempt to identify the disk structures that are most consistent across wavelengths, processing techniques, and algorithmic parameters. The inner disk cavity at 15 au is clearly resolved in multiple data sets, as are a variety of spiral features. While the cavity and spiral structures are identified at levels significantly distinct from the neighboring regions of the disk under several algorithms and with a range of algorithmic parameters, emission at the location of HD 100546 "c" varies from point-like under aggressive algorithmic parameters to a smooth continuous structure with conservative parameters, and is consistent with disk emission. Features identified in the HD 100546 disk bear qualitative similarity to computational models of a moderately inclined two-armed spiral disk, where projection effects and wrapping of the spiral arms around the star result in a number of truncated spiral features in forward-modeled images.
Published: 2017

10. Integral Field Spectroscopy of the Low-mass Companion HD 984 B with the Gemini Planet Imager

Author: Johnson-Groh, M, Marois, C, De Rosa, RJ, Nielsen, EL, Rameau, J, Blunt, S, Vargas, J, Ammons, SM, Bailey, VP, Barman, TS, Bulger, J, Chilcote, JK, Cotten, T, Doyon, R, Duchêne, G, Fitzgerald, MP, Follette, KB, Goodsell, S, Graham, JR, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Konopacky, QM, Larkin, JE, Macintosh, B, Maire, J, Marchis, F, Marley, MS, Metchev, S, Millar-Blanchaer, MA, Oppenheimer, R, Palmer, DW, Patience, J, Perrin, M, Poyneer, LA, Pueyo, L, Rajan, A, Rantakyrö, FT, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Vega, D, Wallace, JK, Wang, JJ, Ward-Duong, K, Wiktorowicz, SJ, and Wolff, SG
Subjects: astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager (GPI) as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J (1.12-1.3 μm) and H (1.50-1.80 μm) bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au (70-year) orbit with a 68% confidence interval between 14 and 28 au, an eccentricity of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log(Lbol/L⊙)=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object.
Published: 2017

11. 1-2.4 μm Near-IR Spectrum of the Giant Planet β Pictoris b Obtained with the Gemini Planet Imager

Author: Chilcote, J, Pueyo, L, Rosa, RJD, Vargas, J, Macintosh, B, Bailey, VP, Barman, T, Bauman, B, Bruzzone, S, Bulger, J, Burrows, AS, Cardwell, A, Chen, CH, Cotten, T, Dillon, D, Doyon, R, Draper, ZH, Duchêne, G, Dunn, J, Erikson, D, Fitzgerald, MP, Follette, KB, Gavel, D, Goodsell, SJ, Graham, JR, Greenbaum, AZ, Hartung, M, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Konopacky, Q, Larkin, JE, Maire, J, Marchis, F, Marley, MS, Marois, C, Metchev, S, Millar-Blanchaer, MA, Morzinski, KM, Nielsen, EL, Norton, A, Oppenheimer, R, Palmer, D, Patience, J, Perrin, M, Poyneer, L, Rajan, A, Rameau, J, Rantakyrö, FT, Sadakuni, N, Saddlemyer, L, Savransky, D, Schneider, AC, Serio, A, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Wallace, JK, Wang, JJ, Ward-Duong, K, Wiktorowicz, S, and Wolff, S
Subjects: instrumentation: adaptive optics, planetary systems, stars: individual, techniques:spectroscopic, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: Using the Gemini Planet Imager located at Gemini South, we measured the near-infrared (1.0-2.4 μm) spectrum of the planetary companion to the nearby, young star β Pictoris. We compare the spectrum obtained with currently published model grids and with known substellar objects and present the best matching models as well as the best matching observed objects. Comparing the empirical measurement of the bolometric luminosity to evolutionary models, we find a mass of 12.9 ±0.2 , an effective temperature of 1724 ±15 K, a radius of 1.46 ±0.01 , and a surface gravity of [dex] (cgs). The stated uncertainties are statistical errors only, and do not incorporate any uncertainty on the evolutionary models. Using atmospheric models, we find an effective temperature of 1700-1800 K and a surface gravity of -4.0 [dex] depending upon the model. These values agree well with other publications and with "hot-start" predictions from planetary evolution models. Further, we find that the spectrum of β Pic b best matches a low surface gravity L2 ±1 brown dwarf. Finally, comparing the spectrum to field brown dwarfs, we find the the spectrum best matches 2MASS J04062677-381210 and 2MASS J03552337+1133437.
Published: 2017

12. DYNAMICAL MASS MEASUREMENT of the YOUNG SPECTROSCOPIC BINARY V343 NORMAE AaAb RESOLVED with the GEMINI PLANET IMAGER

Author: Nielsen, EL, Rosa, RJD, Wang, J, Rameau, J, Song, I, Graham, JR, Macintosh, B, Ammons, M, Bailey, VP, Barman, TS, Bulger, J, Chilcote, JK, Cotten, T, Doyon, R, Duchene, G, Fitzgerald, MP, Follette, KB, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Konopacky, QM, Larkin, JE, Maire, J, Marchis, F, Marley, MS, Marois, C, Metchev, S, Millar-Blanchaer, MA, Oppenheimer, R, Palmer, DW, Patience, J, Perrin, MD, Poyneer, LA, Pueyo, L, Rajan, A, Rantakyrö, FT, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Soummer, R, Thomas, S, Wallace, JK, Ward-Duong, K, Wiktorowicz, SJ, and Wolff, SG
Subjects: planets and satellites: detection, stars: individual, astro-ph.SR, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present new spatially resolved astrometry and photometry from the Gemini Planet Imager of the inner binary of the young multiple star system V343 Normae, which is a member of the β Pictoris (β Pic) moving group. V343 Normae comprises a K0 and mid-M star in a ∼4.5 year orbit (AaAb) and a wide 10″ M5 companion (B). By combining these data with archival astrometry and radial velocities we fit the orbit and measure individual masses for both components of MAa = 1.10 ± 0.10 M⊙ and MAb = 0.290 ± 0.018 M⊙. Comparing to theoretical isochrones, we find good agreement for the measured masses and JHK band magnitudes of the two components consistent with the age of the β Pic moving group. We derive a model-dependent age for the β Pic moving group of 26 ±3 Myr by combining our results for V343 Normae with literature measurements for GJ 3305, which is another group member with resolved binary components and dynamical masses.
Published: 2016

13. Imaging an 80 au radius dust ring around the F5V star HD 157587

Author: Millar-Blanchaer, MA, Wang, JJ, Kalas, P, Graham, JR, Duchêne, G, Nielsen, EL, Perrin, M, Moon, DS, Padgett, D, Metchev, S, Ammons, SM, Bailey, VP, Barman, T, Bruzzone, S, Bulger, J, Chen, CH, Chilcote, J, Cotten, T, Rosa, RJD, Doyon, R, Draper, ZH, Esposito, TM, Fitzgerald, MP, Follette, KB, Gerard, BL, Greenbaum, AZ, Hibon, P, Hinkley, S, Hung, LW, Ingraham, P, Johnson-Groh, M, Konopacky, Q, Larkin, JE, MacIntosh, B, Maire, J, Marchis, F, Marley, MS, Marois, C, Matthews, BC, Oppenheimer, R, Palmer, D, Patience, J, Poyneer, L, Pueyo, L, Rajan, A, Rameau, J, Rantakyrö, FT, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Vega, D, Wallace, JK, Ward-Duong, K, Wiktorowicz, S, and Wolff, S
Subjects: planet-disk interactions, stars: individual, techniques: polarimetric, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present H-band near-infrared polarimetric imaging observations of the F5V star HD 157587 obtained with the Gemini Planet Imager (GPI) that reveal the debris disk as a bright ring structure at a separation of ∼80-100 au. The new GPI data complement recent Hubble Space Telescope/STIS observations that show the disk extending out to over 500 au. The GPI image displays a strong asymmetry along the projected minor axis as well as a fainter asymmetry along the projected major axis. We associate the minor and major axis asymmetries with polarized forward scattering and a possible stellocentric offset, respectively. To constrain the disk geometry, we fit two separate disk models to the polarized image, each using a different scattering phase function. Both models favor a disk inclination of ∼70° and a 1.5 ± 0.6 au stellar offset in the plane of the sky along the projected major axis of the disk. We find that the stellar offset in the disk plane, perpendicular to the projected major axis is degenerate with the form of the scattering phase function and remains poorly constrained. The disk is not recovered in total intensity due in part to strong adaptive optics residuals, but we recover three point sources. Considering the system's proximity to the galactic plane and the point sources' positions relative to the disk, we consider it likely that they are background objects and unrelated to the disk's offset from the star.
Published: 2016

14. THE ORBIT and TRANSIT PROSPECTS for β PICTORIS b CONSTRAINED with ONE MILLIARCSECOND ASTROMETRY

Author: Wang, JJ, Graham, JR, Pueyo, L, Kalas, P, Millar-Blanchaer, MA, Ruffio, JB, Rosa, RJD, Ammons, SM, Arriaga, P, Bailey, VP, Barman, TS, Bulger, J, Burrows, AS, Cardwell, A, Chen, CH, Chilcote, JK, Cotten, T, Fitzgerald, MP, Follette, KB, Doyon, R, Duchêne, G, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Konopacky, QM, Larkin, JE, Macintosh, B, Maire, J, Marchis, F, Marley, MS, Marois, C, Metchev, S, Nielsen, EL, Oppenheimer, R, Palmer, DW, Patel, R, Patience, J, Perrin, MD, Poyneer, LA, Rajan, A, Rameau, J, Rantakyrö, FT, Savransky, D, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Vasisht, G, Vega, D, Wallace, JK, Ward-Duong, K, Wiktorowicz, SJ, and Wolff, SG
Subjects: astrometry, planets and satellites: individual, techniques: image processing, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: A principal scientific goal of the Gemini Planet Imager (GPI) is obtaining milliarcsecond astrometry to constrain exoplanet orbits. However, astrometry of directly imaged exoplanets is subject to biases, systematic errors, and speckle noise. Here, we describe an analytical procedure to forward model the signal of an exoplanet that accounts for both the observing strategy (angular and spectral differential imaging) and the data reduction method (Karhunen-Loève Image Projection algorithm). We use this forward model to measure the position of an exoplanet in a Bayesian framework employing Gaussian processes and Markov-chain Monte Carlo to account for correlated noise. In the case of GPI data on β Pic b, this technique, which we call Bayesian KLIP-FM Astrometry (BKA), outperforms previous techniques and yields 1σ errors at or below the one milliarcsecond level. We validate BKA by fitting a Keplerian orbit to 12 GPI observations along with previous astrometry from other instruments. The statistical properties of the residuals confirm that BKA is accurate and correctly estimates astrometric errors. Our constraints on the orbit of β Pic b firmly rule out the possibility of a transit of the planet at 10-σ significance. However, we confirm that the Hill sphere of β Pic b will transit, giving us a rare chance to probe the circumplanetary environment of a young, evolving exoplanet. We provide an ephemeris for photometric monitoring of the Hill sphere transit event, which will begin at the start of April in 2017 and finish at the end of January in 2018.
Published: 2016

15. DISCOVERY of A SUBSTELLAR COMPANION to the NEARBY DEBRIS DISK HOST HR 2562

Author: Konopacky, QM, Rameau, J, Duchêne, G, Filippazzo, JC, Godfrey, PAG, Marois, C, Nielsen, EL, Pueyo, L, Rafikov, RR, Rice, EL, Wang, JJ, Ammons, SM, Bailey, VP, Barman, TS, Bulger, J, Bruzzone, S, Chilcote, JK, Cotten, T, Dawson, RI, Rosa, RJD, Doyon, R, Esposito, TM, Fitzgerald, MP, Follette, KB, Goodsell, S, Graham, JR, Greenbaum, AZ, Hibon, P, Hung, LW, Ingraham, P, Kalas, P, Lafrenière, D, Larkin, JE, Macintosh, BA, Maire, J, Marchis, F, Marley, MS, Matthews, BC, Metchev, S, Millar-Blanchaer, MA, Oppenheimer, R, Palmer, DW, Patience, J, Perrin, MD, Poyneer, LA, Rajan, A, Rantakyrö, FT, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, Wallace, JK, Ward-Duong, K, Wiktorowicz, SJ, and Wolff, SG
Subjects: brown dwarfs, instrumentation: adaptive optics, planet-disk interactions, stars: individual, astro-ph.EP, astro-ph.SR, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present the discovery of a brown dwarf companion to the debris disk host star HR 2562. This object, discovered with the Gemini Planet Imager (GPI), has a projected separation of 20.3 ± 0.3 au (0.″618 ± 0. ″004) from the star. With the high astrometric precision afforded by GPI, we have confirmed, to more than 5?, the common proper motion of HR 2562B with the star, with only a month-long time baseline between observations. Spectral data in the J-, H-, and K-bands show a morphological similarity to L/T transition objects. We assign a spectral type of L7 ± 3 to HR 2562Band derive a luminosity of log(Lbol/L⊙) = -4.62 ± 0.12, corresponding to a mass of 30 ± 15 MJup from evolutionary models at an estimated age of the system of 300-900 Myr. Although the uncertainty in the age of the host star is significant, the spectra and photometry exhibit several indications of youth for HR 2562B. The source has a position angle that is consistent with an orbit in the same plane as the debris disk recently resolved with Herschel. Additionally, it appears to be interior to the debris disk. Though the extent of the inner hole is currently too uncertain to place limits on the mass of HR 2562B, future observations of the disk with higher spatial resolution may be able to provide mass constraints. This is the first brown-dwarf-mass object found to reside in the inner hole of a debris disk, offering the opportunity to search for evidence of formation above the deuterium burning limit in a circumstellar disk.
Published: 2016

16. THE PDS 66 CIRCUMSTELLAR DISK AS SEEN in POLARIZED LIGHT with the GEMINI PLANET IMAGER

Author: Wolff, SG, Perrin, M, Millar-Blanchaer, MA, Nielsen, EL, Wang, J, Cardwell, A, Chilcote, J, Dong, R, Draper, ZH, Duchěne, G, Fitzgerald, MP, Goodsell, SJ, Grady, CA, Graham, JR, Greenbaum, AZ, Hartung, M, Hibon, P, Hines, DC, Hung, LW, Kalas, P, Macintosh, B, Marchis, F, Marois, C, Pueyo, L, Rantakyrö, FT, Schneider, G, Sivaramakrishnan, A, and Wiktorowicz, SJ
Subjects: instrumentation: adaptive optics, protoplanetary disks, stars: individual, techniques: high angular resolution, techniques: polarimetric, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present H- and K-band imaging polarimetry for the PDS 66 circumstellar disk obtained during the commissioning of the Gemini Planet Imager (GPI). Polarization images reveal a clear detection of the disk in to the 0.″12 inner working angle (IWA) in the H band, almost three times closer to the star than the previous Hubble Space Telescope (HST) observations with NICMOS and STIS (0.″35 effective IWA). The centro-symmetric polarization vectors confirm that the bright inner disk detection is due to circumstellar scattered light. A more diffuse disk extends to a bright outer ring centered at 80 AU. We discuss several physical mechanisms capable of producing the observed ring + gap structure. GPI data confirm enhanced scattering on the east side of the disk that is inferred to be nearer to us. We also detect a lateral asymmetry in the south possibly due to shadowing from material within the IWA. This likely corresponds to a temporally variable azimuthal asymmetry observed in HST/STIS coronagraphic imaging.
Published: 2016

17. First scattered-light image of the debris disk around HD 131835 with the gemini planet imager

Author: Hung, LW, Duchêne, G, Arriaga, P, Fitzgerald, MP, Maire, J, Marois, C, Millar-Blanchaer, MA, Bruzzone, S, Rajan, A, Pueyo, L, Kalas, PG, De Rosa, RJ, Graham, JR, Konopacky, Q, Wolff, SG, Ammons, SM, Chen, CH, Chilcote, JK, Draper, ZH, Esposito, TM, Gerard, B, Goodsell, S, Greenbaum, A, Hibon, P, Hinkley, S, MacIntosh, B, Marchis, F, Metchev, S, Nielsen, EL, Oppenheimer, R, Patience, JL, Perrin, MD, Rantakyrö, FT, Sivaramakrishnan, A, Wang, JJ, Ward-Duong, K, and Wiktorowicz, SJ
Subjects: circumstellar matter, infrared: stars, stars: individual, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present the first scattered-light image of the debris disk around HD 131835 in the H band using the Gemini Planet Imager. HD 131835 is a ∼15 Myr old A2IV star at a distance of ∼120 pc in the Sco-Cen OB association. We detect the disk only in polarized light and place an upper limit on the peak total intensity. No point sources resembling exoplanets were identified. Compared to its mid-infrared thermal emission, in scattered light the disk shows similar orientation but different morphology. The scattered-light disk extends from ∼75 to ∼210 AU in the disk plane with roughly flat surface density. Our Monte Carlo radiative transfer model can describe the observations with a model disk composed of a mixture of silicates and amorphous carbon. In addition to the obvious brightness asymmetry due to stronger forward scattering, we discover a weak brightness asymmetry along the major axis, with the northeast side being 1.3 times brighter than the southwest side at a 3σ level.
Published: 2015

18. Direct imaging of an asymmetric debris disk in the HD 106906 planetary system

Author: Kalas, PG, Rajan, A, Wang, JJ, Millar-Blanchaer, MA, Duchene, G, Chen, C, Fitzgerald, MP, Dong, R, Graham, JR, Patience, J, Macintosh, B, Murray-Clay, R, Matthews, B, Rameau, J, Marois, C, Chilcote, J, Rosa, RJD, Doyon, R, Draper, ZH, Lawler, S, Ammons, SM, Arriaga, P, Bulger, J, Cotten, T, Follette, KB, Goodsell, S, Greenbaum, A, Hibon, P, Hinkley, S, Hung, LW, Ingraham, P, Konapacky, Q, Lafreniere, D, Larkin, JE, Long, D, Maire, J, Marchis, F, Metchev, S, Morzinski, KM, Nielsen, EL, Oppenheimer, R, Perrin, MD, Pueyo, L, Rantakyrö, FT, Ruffio, JB, Saddlemyer, L, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Soummer, R, Song, I, Thomas, S, Vasisht, G, Ward-Duong, K, Wiktorowicz, SJ, and Wolff, SG
Subjects: circumstellar matter, infrared: stars, stars: individual, techniques: high angular resolution, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract: We present the first scattered light detections of the HD 106906 debris disk using the Gemini/Gemini Planet Imager in the infrared and Hubble Space Telescope (HST)/Advanced Camera for Surveys in the optical. HD 106906 is a 13 Myr old F5V star in the Sco-Cen association, with a previously detected planet-mass candidate HD 106906b projected 650 AU from the host star. Our observations reveal a near edge-on debris disk that has a central cleared region with radius ∼50 AU, and an outer extent >500 AU. The HST data show that the outer regions are highly asymmetric, resembling the "needle" morphology seen for the HD 15115 debris disk. The planet candidate is oriented ∼21° away from the position angle of the primary's debris disk, strongly suggesting non-coplanarity with the system. We hypothesize that HD 106906b could be dynamically involved in the perturbation of the primary's disk, and investigate whether or not there is evidence for a circumplanetary dust disk or cloud that is either primordial or captured from the primary. We show that both the existing optical properties and near-infrared colors of HD 106906b are weakly consistent with this possibility, motivating future work to test for the observational signatures of dust surrounding the planet.
Published: 2015

19. Gemini planet imager observations of the au microscopii debris disk: Asymmetries within one arcsecond

Author: Wang, JJ, Graham, JR, Pueyo, L, Nielsen, EL, Millar-Blanchaer, M, Rosa, RJD, Kalas, P, Ammons, SM, Bulger, J, Cardwell, A, Chen, C, Chiang, E, Chilcote, JK, Doyon, R, Draper, ZH, Duchêne, G, Esposito, TM, Fitzgerald, MP, Goodsell, SJ, Greenbaum, AZ, Hartung, M, Hibon, P, Hinkley, S, Hung, LW, Ingraham, P, Larkin, JE, Macintosh, B, Maire, J, Marchis, F, Marois, C, Matthews, BC, Morzinski, KM, Oppenheimer, R, Patience, J, Perrin, MD, Rajan, A, Rantakyrö, FT, Sadakuni, N, Serio, A, Sivaramakrishnan, A, Soummer, R, Thomas, S, Ward-Duong, K, Wiktorowicz, SJ, and Wolff, SG
Subjects: circumstellar matter, instrumentation: adaptive optics, methods: data analysis, planet-disk interactions, stars: individual, techniques: high angular resolution, astro-ph.EP, Astronomy & Astrophysics, Astronomical and Space Sciences
Abstract: We present Gemini Planet Imager (GPI) observations of AU Microscopii, a young M dwarf with an edge-on, dusty debris disk. Integral field spectroscopy and broadband imaging polarimetry were obtained during the commissioning of GPI. In our broadband imaging polarimetry observations, we detect the disk only in total intensity and find asymmetries in the morphology of the disk between the southeast (SE) and northwest (NW) sides. The SE side of the disk exhibits a bump at 1″ (10 AU projected separation) that is three times more vertically extended and three times fainter in peak surface brightness than the NW side at similar separations. This part of the disk is also vertically offset by 69 ± 30 mas to the northeast at 1″ when compared to the established disk midplane and is consistent with prior Atacama Large Millimeter/submillimeter Array and Hubble Space Telescope/Space Telescope Imaging Spectrograph observations. We see hints that the SE bump might be a result of detecting a horizontal sliver feature above the main disk that could be the disk backside. Alternatively, when including the morphology of the NW side, where the disk midplane is offset in the opposite direction ∼50 mas between 0.″4 and 1.″2, the asymmetries suggest a warp-like feature. Using our integral field spectroscopy data to search for planets, we are 50% complete for ∼4 MJup planets at 4 AU. We detect a source, resolved only along the disk plane, that could either be a candidate planetary mass companion or a compact clump in the disk.
Published: 2015

20. Discovery of resolved debris disk around HD 131835

Author: Hung, LW, Fitzgerald, MP, Chen, CH, Mittal, T, Kalas, PG, and Graham, JR
Subjects: circumstellar matter, infrared: stars, stars: individual, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract: We report the discovery of the resolved disk around HD 131835 and present the analysis and modeling of its thermal emission. HD 131835 is a ∼15 Myr A2 star in the Scorpius-Centaurus OB association at a distance of 122.7-12.8+16.2 pc. The extended disk has been detected to ∼1.″5 (200 AU) at 11.7 and 18.3 μm with T-ReCS on Gemini South. The disk is inclined at an angle of ∼75° with the position angle of ∼61°. The flux of the HD 131835 system is 49.3 ± 7.6 and 84 ± 45 mJy at 11.7 and 18.3 μm, respectively. A model with three grain populations gives a satisfactory fit to both the spectral energy distribution and the images simultaneously. This best-fit model is composed of a hot continuous power-law disk and two rings. We characterized the grain temperature profile and found that the grains in all three populations are emitting at temperatures higher than blackbodies. In particular, the grains in the continuous disk are unusually warm, even when considering small graphite particles as the composition.
Published: 2015

21. Gene dysregulation is restored in the Parkinson's disease MPTP neurotoxic mice model upon treatment of the therapeutic drug Cu-II(atsm)

Author: Sim, Lesley, Quek, CYJ, Hung, LW, Sharples, Robyn, Sherratt, NA, Barnham, KJ, and Hill, Andrew
Subjects: Uncategorized
Abstract: The administration of MPTP selectively targets the dopaminergic system resulting in Parkinsonism-like symptoms and is commonly used as a mice model of Parkinson's disease. We previously demonstrated that the neuroprotective compound CuII (atsm) rescues nigral cell loss and improves dopamine metabolism in the MPTP model. The mechanism of action of CuII (atsm) needs to be further defined to understand how the compound promotes neuronal survival. Whole genome transcriptomic profiling has become a popular method to examine the relationship between gene expression and function. Substantia nigra samples from MPTP-lesioned mice were evaluated using whole transcriptome sequencing to investigate the genes altered upon CuII (atsm) treatment. We identified 143 genes affected by MPTP lesioning that are associated with biological processes related to brain and cognitive development, dopamine synthesis and perturbed synaptic neurotransmission. Upon CuII (atsm) treatment, the expression of 40 genes involved in promoting dopamine synthesis, calcium signaling and synaptic plasticity were restored which were validated by qRT-PCR. The study provides the first detailed whole transcriptomic analysis of pathways involved in MPTP-induced Parkinsonism. In addition, we identify key therapeutic pathways targeted by a potentially new class of neuroprotective agents which may provide therapeutic benefits for other neurodegenerative disorders.
Published: 2023
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22. INCLUSIVE TRANSVERSE-MOMENTUM DISTRIBUTIONS OF CHARGED-PARTICLES IN DIFFRACTIVE AND NON-DIFFRACTIVE PHOTOPRODUCTION AT HERA

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, Rl, Zhang, H., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Romeo, Gc, Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Garcia, Yz, Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Dickmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Haas, T., Hartmann, H., Hann, D., Heinloth, K., Hilger, E., Jakob, Hp, Katz, Uf, Mari, Sm, Mass, A., Mengel, S., Mollen, J., Paul, E., Rembser, C., Schattevoy, R., Schramm, D., Stamm, J., Wedemeyer, R., Campbellrobson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cjs, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, Ss, Yoshida, R., Rau, Rr, Arneodo, M., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, Ja, Ritz, S., Sciulli, F., Straub, Pb, Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Leszek Zawiejski, Adamczyk, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Kotanski, A., Przybycien, M., Bauerdick, Lat, Behrens, U., Beier, H., Bienlein, Jk, Coldewey, C., Deppe, O., Desler, K., Drews, G., Glasinski, M., Gilkinson, Dj, Glasman, C., Gottlicher, P., Grosseknetter, J., Gutjahr, B., Hain, W., Hasell, D., Hessling, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, W., Kopke, L., Kotz, U., Kowalski, H., Labs, J., Ladage, A., Lohr, B., Lowe, M., Luke, D., Manczak, O., Monteiro, T., Ng, Jst, Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voss, T., Westphal, D., Wolf, G., Youngman, C., Zhou, Jf, Grabosch, Hj, Kharchilava, A., Leich, A., Mattingly, Mck, Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Depasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Soldnerrembold, S., Schroeder, J., Trefzger, T., Brook, Nh, Bussey, Pj, Doyle, At, Fleck, Jj, Saxon, Dh, Utley, Ml, Wilson, As, Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, Bd, Hagge, L., Lohrmann, E., Mainusch, J., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, Tc, Butterworth, I., Gallo, E., Harris, Vi, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A., Sedgbeer, Jk, Whitfield, Af, Mallik, U., Mccliment, E., Wang, Mz, Wang, Sm, Wu, Jt, Zhang, Y., Cloth, P., Filges, D., An, Sh, Hong, Sm, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R., Kartik, S., Kim, Hj, Mcneil, Rr, Metclaf, W., Nadendla, Vk, Barreiro, F., Cases, G., Graciani, R., Hernandez, Jm, Hervas, L., Labarga, L., Delpeso, J., Puga, J., Terron, J., Detroconiz, Jf, Smith, Gr, Corriveau, F., Hanna, Ds, Hartmann, J., Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Laurent, Ms, Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, Ba, Stifutkin, A., Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, As, Savia, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M., Chlebana, F., Dake, A., Engelen, J., Dekamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Dewolf, E., Vanwoudenberg, R., Acosta, D., Bylsma, B., Durkin, Ls, Honscheid, K., Li, C., Ling, Ty, Mclean, Kw, Murray, Wn, Park, Lh, Romanowski, Ta, Seidlein, R., Bailey, Ds, Blair, Ga, Byrne, A., Cashmore, Rj, Coopersarkar, Am, Daniels, D., Devenish, Rce, Harnew, N., Lancaster, M., Luffman, Pe, Lindemann, L., Mcfall, Jd, Nath, C., Noyes, Va, Quadt, A., Uijterwaal, H., Walczak, R., Wilson, Ff, Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Degiorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G., Marini, G., Nigro, A., Tassi, E., Hart, Jc, Mccubbin, Na, Prytz, K., Shah, Tp, Short, Tl, Barberis, E., Dubbs, T., Heusch, C., Vanhook, M., Hubbard, B., Lockman, W., Rahn, Jt, Sadrozinski, Hfw, Seiden, A., Biltzinger, J., Seifert, Rj, Schwarzer, O., Walenta, Ah, Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cino, R., Costa, M., Ferrero, Mi, Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, Dc, Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J., Blankenship, K., Lu, B., Mo, Lw, Bogusz, W., Charchula, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, Rj, Pawlak, Jm, Tymieniecka, T., Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zerzion, D., Ali, I., Badgett, Wf, Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, Rj, Reeder, Dd, Silverstein, S., Smith, Wh, Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M., and Schmidke, Wb
Subjects: Diffraction, Particle physics, Photon, Physics and Astronomy (miscellaneous), non-diffractive interaction, Nuclear Theory, Monte Carlo method, FOS: Physical sciences, COLLIDER ENERGIES, 7. Clean energy, 01 natural sciences, photoproduction, diffractive interactions, Spectral line, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, HADRONIC PROCESSES, PHOTON, DISSOCIATION, Quantum chromodynamics, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Charged particle, Pseudorapidity, High Energy Physics::Experiment
Abstract: Inclusive transverse momentum spectra of charged particles in photoproduction events in the laboratory pseudorapidity range $-1.2, Comment: 23 pages, latex, 4 figures appended as uuencoded file
Published: 2016
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23. Can i solve my structure by SAD phasing? Anomalous signal in SAD phasing

Author: Terwilliger, TC, Bunkóczi, G, Hung, LW, Zwart, PH, Smith, JL, Akey, DL, and Adams, PD
Abstract: © Terwilliger et al. 2016. A key challenge in the SAD phasing method is solving a structure when the anomalous signal-to-noise ratio is low. A simple theoretical framework for describing measurements of anomalous differences and the resulting useful anomalous correlation and anomalous signal in a SAD experiment is presented. Here, the useful anomalous correlation is defined as the correlation of anomalous differences with ideal anomalous differences from the anomalous substructure. The useful anomalous correlation reflects the accuracy of the data and the absence of minor sites. The useful anomalous correlation also reflects the information available for estimating crystallographic phases once the substructure has been determined. In contrast, the anomalous signal (the peak height in a model-phased anomalous difference Fourier at the coordinates of atoms in the anomalous substructure) reflects the information available about each site in the substructure and is related to the ability to find the substructure. A theoretical analysis shows that the expected value of the anomalous signal is the product of the useful anomalous correlation, the square root of the ratio of the number of unique reflections in the data set to the number of sites in the substructure, and a function that decreases with increasing values of the atomic displacement factor for the atoms in the substructure. This means that the ability to find the substructure in a SAD experiment is increased by high data quality and by a high ratio of reflections to sites in the substructure, and is decreased by high atomic displacement factors for the substructure.
Published: 2016
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24. Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager

Author: Macintosh, B, Graham, JR, Barman, T, De Rosa, RJ, Konopacky, Q, Marley, MS, Marois, C, Nielsen, EL, Pueyo, L, Rajan, A, Rameau, J, Saumon, D, Wang, JJ, Patience, J, Ammons, M, Arriaga, P, Artigau, E, Beckwith, S, Brewster, J, Bruzzone, S, Bulger, J, Burningham, B, Burrows, AS, Chen, C, Chiang, E, Chilcote, JK, Dawson, RI, Dong, R, Doyon, R, Draper, ZH, Duchêne, G, Esposito, TM, Fabrycky, D, Fitzgerald, MP, Follette, KB, Fortney, JJ, Gerard, B, Goodsell, S, Greenbaum, AZ, Hibon, P, Hinkley, S, Cotton, TH, Hung, LW, Ingraham, P, Johnson-Groh, M, Kalas, P, Lafreniere, D, Larkin, JE, Lee, J, Line, M, Long, D, Maire, J, Marchis, F, Matthews, BC, Max, CE, Metchev, S, Millar-Blanchaer, MA, Mittal, T, Morley, CV, Morzinski, KM, Murray-Clay, R, Oppenheimer, R, Palmer, DW, Patel, R, Perrin, MD, Poyneer, LA, Rafikov, RR, Rantakyrö, FT, Rice, EL, Rojo, P, Rudy, AR, Ruffio, JB, Ruiz, MT, Sadakuni, N, Saddlemyer, L, Salama, M, Savransky, D, Schneider, AC, Sivaramakrishnan, A, Song, I, Soummer, R, Thomas, S, and Vasisht, G
Subjects: Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric compositions and luminosities, which are influenced by their formation mechanisms. Using the Gemini Planet Imager, we discovered a planet orbiting the ∼20-million-year-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water-vapor absorption. Modeling of the spectra and photometry yields a luminosity (normalized by the luminosity of the Sun) of 1.6 to 4.0 × 10-6and an effective temperature of 600 to 750 kelvin. For this age and luminosity, "hot-start" formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the "cold-start" core-accretion process that may have formed Jupiter.
Published: 2015
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25. Measurement of the diffractive cross section in deep inelastic scattering

Author: Author: Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, JR, Repond, J, Stanek, R, Talaga, RL, Zhang, H, Mattingly, MCK, Bari, G, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, P, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, CampbellRobson, S, Cassidy, A, Cottingham, WN, Dyce, N, Foster, B, George, S, Hayes, ME, Heath, GP, Heath, HF, Piccioni, D, Roff, DG, Tapper, RJ, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, JA, Ritz, S, Sciulli, F, Straub, PB, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, RulikowskaZarebska, E, Suszycki, L, Zajac, K, Kotanski, A, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, DJ, Glasman, C, Gottlicher, P, GrosseKnetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, KF, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Grabosch, HJ, Kharchilava, A, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, DePasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Saxon, DH, Sinclair, LE, Utley, ML, Wilson, AS, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, BD, Hagge, L, Lohramann, E, Milewski, J, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Brummer, N, Butterworth, I, Harris, VL, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Prinias, A, Sedgbeer, JK, Sideris, D, Whitfield, AF, Mallik, U, Wang, MZ, Wang, SM, Wu, JT, Cloth, P, Filges, D, An, SH, Cho, GH, Ko, BJ, Lee, SB, Nam, SW, Park, HS, Park, SK, Kartik, S, Kim, HJ, Mcneil, RR, Metcalf, W, Nadendla, VK, Barreiro, F, Cases, G, Fernandez, JP, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, delPeso, J, Puga, J, Terron, J, deTroconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Lim, JN, Matthews, CG, Patel, PM, Riveline, M, Stairs, DG, StLaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Gladilin, LK, Golubkov, YA, Kobrin, VD, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Savin, AA, Shcheglova, LM, Solomin, AN, Zotov, NP, Botje, M, Chlebana, F, Engelen, J, deKamps, M, Kooijman, P, Kruse, A, vanSighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, deWolf, E, vanWoudenberg, R, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Li, C, Ling, TY, Nylander, P, Park, IH, Romanowski, TA, Bailey, DS, Cashmore, RJ, CooperSarkar, AM, Devenish, RCE, Harnew, N, Lancaster, M, Lindemann, L, McFall, JD, Nath, C, Noyes, VA, Quadt, A, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Wilson, FF, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, DalCorso, F, DeGiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, RG, Oh, BY, Whitmore, JJ, DAgostini, G, Marini, G, Nigro, A, Tassi, E, Hart, JC, McCubbin, NA, Shah, TP, Barberis, E, Dubbs, T, Heusch, C, VanHook, M, Lockman, W, Rahn, JT, Sadrozinski, HFW, Seiden, A, Williams, DC, Biltzinger, J, Seifert, RJ, Schwarzer, O, Walenta, AH, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, JI, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Benard, F, Brkic, M, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sampson, CR, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Kaziewicz, PB, Lane, JB, Saunders, RL, Shulman, J, Sutton, MR, Lu, B, Mo, LW, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Coldewey, C, Eisenberg, Y, Karshon, U, Revel, D, ZerZion, D, Badgett, WF, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Silverstein, S, Smith, WH, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, ML, Fagerstroem, CP, Frisken, WR, Khakzad, M, Murray, WN, Schmidke, WB, MARI, Stefano Maria, ZEUS at HERA (IHEF, IoP, FNWI), Author:, Derrick, M, Krakauer, D, Magill, S, Mikuna, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Bari, G, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Giala, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Doeker, T, Eckert, M, Feld, L, Frey, A, Geert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Haye, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parson, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskrey, A, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, K, Kotanski, A, Bauerdick, Lat, Behren, U, Beier, H, Bienlein, Jk, Deppe, O, Desler, K, Drew, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haa, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joo, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Lab, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Vo, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Grabosch, Hj, Kharchilava, A, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohramann, E, Milewski, J, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, Sm, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Li, C, Ling, Ty, Nylander, P, Park, Ih, Romanowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Coldewey, C, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Khakzad, M, Murray, Wn, and Schmidke, Wb
Subjects: Quark, Particle physics, Photon, Physics and Astronomy (miscellaneous), Proton, LUND MONTE-CARLO, HERA, Nuclear Theory, Physics::Optics, FOS: Physical sciences, 01 natural sciences, JET FRAGMENTATION, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pomeron, 0103 physical sciences, DISTRIBUTIONS, SINGULARITY, CALORIMETER, Nuclear Experiment, 010306 general physics, Physics, E+E-PHYSICS, Mathematics::Operator Algebras, 010308 nuclear & particles physics, Scattering, Mathematics::Rings and Algebras, Perturbative QCD, ZEUS, Deep inelastic scattering, POMERON STRUCTURE, EP SCATTERING, High Energy Physics::Experiment
Abstract: Diffractive scattering of $\gamma^* p \to X + N$, where $N$ is either a proton or a nucleonic system with $M_N~, Comment: 45 pages, including 16 figures
Published: 1996
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26. Gene dysregulation is restored in the Parkinson's disease MPTP neurotoxic mice model upon treatment of the therapeutic drug CuII(atsm)

Author: Cheng, L, Quek, CYJ, Hung, LW, Sharples, RA, Sherratt, NA, Barnham, KJ, Hill, AF, Cheng, L, Quek, CYJ, Hung, LW, Sharples, RA, Sherratt, NA, Barnham, KJ, and Hill, AF
Abstract: The administration of MPTP selectively targets the dopaminergic system resulting in Parkinsonism-like symptoms and is commonly used as a mice model of Parkinson's disease. We previously demonstrated that the neuroprotective compound Cu(II)(atsm) rescues nigral cell loss and improves dopamine metabolism in the MPTP model. The mechanism of action of Cu(II)(atsm) needs to be further defined to understand how the compound promotes neuronal survival. Whole genome transcriptomic profiling has become a popular method to examine the relationship between gene expression and function. Substantia nigra samples from MPTP-lesioned mice were evaluated using whole transcriptome sequencing to investigate the genes altered upon Cu(II)(atsm) treatment. We identified 143 genes affected by MPTP lesioning that are associated with biological processes related to brain and cognitive development, dopamine synthesis and perturbed synaptic neurotransmission. Upon Cu(II)(atsm) treatment, the expression of 40 genes involved in promoting dopamine synthesis, calcium signaling and synaptic plasticity were restored which were validated by qRT-PCR. The study provides the first detailed whole transcriptomic analysis of pathways involved in MPTP-induced Parkinsonism. In addition, we identify key therapeutic pathways targeted by a potentially new class of neuroprotective agents which may provide therapeutic benefits for other neurodegenerative disorders.
Published: 2016

27. Restoration of intestinal function in an MPTP model of Parkinson's Disease

Author: Ellett, LJ, Hung, LW, Munckton, R, Sherratt, NA, Culvenor, J, Grubman, A, Furness, JB, White, AR, Finkelstein, DI, Barnham, KJ, Lawson, VA, Ellett, LJ, Hung, LW, Munckton, R, Sherratt, NA, Culvenor, J, Grubman, A, Furness, JB, White, AR, Finkelstein, DI, Barnham, KJ, and Lawson, VA
Abstract: Patients with Parkinson's disease often experience non-motor symptoms including constipation, which manifest prior to the onset of debilitating motor signs. Understanding the causes of these non-motor deficits and developing disease modifying therapeutic strategies has the potential to prevent disease progression. Specific neuronal subpopulations were reduced within the myenteric plexus of mice 21 days after intoxication by the intraperitoneal administration of MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) and was associated with a reduction in stool frequency, indicative of intestinal dysfunction. Oral administration of the divalent copper complex, Cu(II)(atsm), which has been shown to be neuroprotective and restore motor performance to MPTP lesioned mice, improved stool frequency and was correlated with restoration of neuronal subpopulations in the myenteric plexus of MPTP lesioned mice. Restoration of intestinal function was associated with reduced enteric glial cell reactivity and reduction of markers of inflammation. Therapeutics that have been shown to be neuroprotective in the central nervous system, such as Cu(II)(atsm), therefore also provide symptom relief and are disease modifying in the intestinal tract, suggesting that there is a common cause of Parkinson's disease pathogenesis in the enteric nervous system and central nervous system.
Published: 2016

28. Oral treatment with CuII(atsm) increases mutant SOD1 in vivo but protects motor neurons and improves the phenotype of a transgenic mouse model of amyotrophic lateral sclerosis

Author: Roberts, BR, Lim, NKH, McAllum, EJ, Donnelly, PS, Hare, DJ, Doble, PA, Turner, BJ, Price, KA, Lim, SC, Paterson, BM, Hickey, JL, Rhoads, TW, Williams, JR, Kanninen, KM, Hung, LW, Liddell, JR, Grubman, A, Monty, JF, Llanos, RM, Kramer, DR, Mercer, JFB, Bush, AI, Masters, CL, Duce, JA, Li, QX, Beckman, JS, Barnham, KJ, White, AR, and Crouch, PJ
Subjects: Motor Neurons, Thiosemicarbazones, Neurology & Neurosurgery, Superoxide Dismutase, animal diseases, Amyotrophic Lateral Sclerosis, Age Factors, nutritional and metabolic diseases, Administration, Oral, Mice, Transgenic, nervous system diseases, Mice, Disease Models, Animal, Phenotype, Superoxide Dismutase-1, nervous system, Spinal Cord, Mutation, Organometallic Compounds, Chromatography, Gel, Animals, Humans, Cation Transport Proteins, Locomotion, Copper Transporter 1
Abstract: Mutations in the metallo-protein Cu/Zn-superoxide dismutase (SOD1) cause amyotrophic lateral sclerosis (ALS) in humans and an expression level-dependent phenotype in transgenic rodents. We show that oral treatment with the therapeutic agent diacetyl-bis(4-methylthiosemicarbazonato)copperII [CuII(atsm)] increased the concentration of mutant SOD1 (SOD1G37R) in ALS model mice, but paradoxically improved locomotor function and survival of the mice. To determine why the mice with increased levels of mutant SOD1 had an improved phenotype, we analyzed tissues by mass spectrometry. These analyses revealed most SOD1 in the spinal cord tissue of the SOD1G37R mice was Cu deficient. Treating with CuII(atsm) decreased the pool of Cu-deficient SOD1 and increased the pool of fully metallated (holo) SOD1. Tracking isotopically enriched 65CuII(atsm) confirmed the increase in holo-SOD1 involved transfer of Cu from CuII(atsm) to SOD1, suggesting the improved locomotor function and survival of the CuII(atsm)-treated SOD1G37R mice involved, at least in part, the ability of the compound to improve the Cu content of the mutant SOD1. This was supported by improved survival of SOD1G37R mice that expressed the human gene for the Cu uptake protein CTR1. Improving the metal content of mutant SOD1 in vivo with CuII(atsm) did not decrease levels of misfolded SOD1. These outcomes indicate the metal content of SOD1 may be a greater determinant of the toxicity of the protein in mutant SOD1-associated forms of ALS than the mutations themselves. Improving the metal content of SOD1 therefore represents a valid therapeutic strategy for treating ALS caused by SOD1. © 2014 the authors.
Published: 2014

29. Jet production in highQ 2 deep-inelastic ep scattering at HERA

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, Rl, Zhang, H., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Romeo, Gc, Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Garcia, Yz, Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Haas, T., Hartmann, H., Haun, D., Heinloth, K., Hilger, E., Jakob, Hp, Katz, Uf, Mari, Sm, Mass, A., Mengel, S., Mollen, J., Paul, E., Rembser, C., Schattevoy, R., Schramm, D., Stamm, J., Wedemeyer, R., Campbellrobson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cjs, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, Ss, Yoshida, R., Rau, Rr, Arneodo, M., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Parsons, Ja, Ritz, S., Sciulli, F., Straub, Pb, Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Eskreys, K., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Kotanski, A., Przybycien, M., Bauerdick, Lat, Behrens, U., Beier, H., Bienlein, Jk, Coldewey, C., Deppe, O., Desler, K., Drews, G., Flasinski, M., Gilkinson, Dj, Glasman, C., Gottlicher, P., Grosseknetter, J., Gutjahr, B., Hain, W., Hasell, D., Hessling, H., Hultschig, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, L., Kotz, U., Kowalski, H., Labs, J., Ladage, A., Lohr, B., Lowe, M., Luke, D., Manczak, O., Ng, Jst, Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voss, T., Westphal, D., Wolf, G., Youngman, C., Zhou, Jf, Grabosch, Hj, Kharchilava, A., Leich, A., Mattingly, M., Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Depasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Soldnerrembold, S., Schroeder, J., Trefzger, T., Brook, Nh, Bussey, Pj, Doyle, At, Fleck, I., Saxon, Dh, Utley, Hl, Wilson, As, Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, Bd, Hagge, L., Lohrmann, E., Mainusch, J., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, Tc, Butterworth, I., Gallo, E., Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A., Sedgbeer, Jk, Whitfield, Af, Mallik, U., Mccliment, E., Wang, Mz, Wang, Sm, Wu, Jt, Zhang, Y., Cloth, P., Filges, D., An, Sh, Hong, Sm, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R., Kartik, S., Kim, Hj, Mcneil, Rr, Metcalf, W., Nadendla, Vk, Barreiro, F., Cases, G., Graciani, R., Hernandez, Jm, Hervas, L., Labarga, L., Delpeso, J., Puga, J., Terron, J., Detroconiz, Jf, Smith, Gr, Corriveau, F., Hanna, Ds, Hartmann, J., Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Laurent, Ms, Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, Ba, Stifutkin, A., Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, As, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M., Chlebana, F., Dake, A., Engelen, J., Dekamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Dewolf, E., Vanwoudenberg, R., Acosta, D., Bylsma, B., Durkin, Ls, Honscheid, K., Li, C., Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R., Bailey, Ds, Blair, Ga, Byrne, A., Cashmere, Rj, Coopersarkar, Am, Daniels, D., Devenish, Rce, Harnew, N., Lancaster, M., Luffman, Pe, Lindemann, L., Mcfall, Jd, Nath, C., Noyes, Va, Quadt, A., Uijterwaal, H., Walczak, R., Wilson, Ff, Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Degiorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G., Marini, G., Nigro, A., Enrico TASSI, Hart, Jc, Mccubbin, Na, Prytz, K., Shah, Tp, Short, Tl, Barberis, E., Cartiglia, N., Dubbs, T., Heusch, C., Vanhook, M., Hubbard, B., Lockman, W., Rahn, Jt, Sadrozinski, Hfw, Seiden, A., Biltzinger, J., Seifert, Rj, Walenta, Ah, Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrero, Mi, Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, Dc, Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J., Blankenship, K., Kochocki, J., Lu, B., Mo, Lw, Bogusz, W., Charchula, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyanowski, M., Muchorowski, K., Nowak, Rj, Pawlak, Jm, Tymieniecka, T., Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zerzion, D., Ali, I., Badgett, Wf, Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, Rj, Reeder, Dd, Silverstein, S., Smith, Wh, Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M., and Schmidke, Wb
Subjects: Particle physics, jet production, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, ZEUS, PARTON DISTRIBUTIONS, PROTON SCATTERING, DEPENDENCE, RATES, FOS: Physical sciences, Jet (particle physics), perturbative QCD, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Proton scattering, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Scaling, Quantum chromodynamics, Physics, ZEUS (particle detector), 010308 nuclear & particles physics, Scattering, HERA, High Energy Physics::Experiment, Production (computer science)
Abstract: Two-jet production in deep-inelastic electron-proton scattering has been studied for $160, Comment: 26 pages, latex, 9 figures appended as uuencoded file
Published: 1995
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30. The ZEUS Leading Proton Spectrometer and its use in the measurement of elastic rho(0) photoproduction at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasinski Jr, Repond J, Stanek R, Talaga RL, Zhang H, Mattingly MCK, Anselmo F, Antonioli P, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Chiarini M, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Nemoz C, Palmonari F, Pesci A, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Crittenden J, Deffner R, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Jakubowski Z, Przybycien MB, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Tassi E, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zeuner W, Grabosch HJ, Meyer A, Schlenstedt S, Barbagli G, Gallo E, Pelfer P, Anzivino G, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle S, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Strickland E, Utley ML, Waugh R, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Pavel N, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Murray WN, Ochs A, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Ginsburg CM, Kim CL, Li C, Ling TY, Nylander P, Park IH, Romanowski TA, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner Jr, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, Bulmahn J, Feild RG, Oh BY, Whitmore JJ, DAgostini G, Marini G, Nigro A, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Abramowicz H, Briskin G, Dagan S, Doeker T, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamauchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Fagerstroem CP, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Revel D, ZerZion D, Badgett WF, Breitweg J, Chapin D, Cross R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Bhadra S, Cardy ML, Frisken WR, Khakzad M, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, Hj, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Strickland, E, Utley, Ml, Waugh, R, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Murray, Wn, Ochs, A, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Ginsburg, Cm, Kim, Cl, Li, C, Ling, Ty, Nylander, P, Park, Ih, Romanowski, Ta, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Frisken, Wr, Khakzad, M, and Schmidke, Wb
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The differential cross section d sigma/dt for elastic rho(0) photoproduction, gamma p --> rho(0)p (rho(0) --> pi(+)pi(-)), has been measured in ep interactions at HERA. The squared four-momentum exchanged at the proton vertex, t, has been determined directly by measuring the momentum of the scattered proton using the ZEUS Leading Proton Spectrometer (LPS), a large scale system of silicon micro-strip detectors operating close to the HERA proton beam. The LPS allows the measurement of the momentum of high energy protons scattered at small angles with accuracies of 0.4% for the longitudinal momentum and 5 MeV for the transverse momentum. Photoproduction of rho(0) mesons has been investigated in the interval 0.073 < \t\ < 0.40 GeV2, for photon virtualities Q(2) < 1 GeV2 and photon-proton centre-of-mass energies W between 50 and 100 GeV. In the measured range, the t distribution exhibits an exponential shape with a slope parameter b = 9.8 +/- 0.8 (stat.) +/- 1.1 (syst.) GeV-2. The use of the LPS eliminates the contamination from events with diffractive dissociation of the proton into low mass states.
Published: 1997

31. Search for lepton flavor violation in ep collisions at 300 GeV center of mass energy RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasiniski Jr, Repond J, Stanek R, Talaga RL, Zhang H, Mattingly MCK, Anselmo F, Antonioli P, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Pesci A, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Crittenden J, Deffner R, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Jakubowski Z, Przybycien MB, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Tassi E, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zeuner W, Grabosch HJ, Meyer A, Schlenstedt S, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle D, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Strickland E, Utley ML, Waugh R, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Pavel N, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Murray WN, Ochs A, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Ginsburg CM, Kim CL, Li C, Ling TY, Nylander P, Park IH, Romanowski TA, Bailey DS, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner Jr, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, Bulmahn J, Feild RG, Oh BY, Whitmore JJ, DAgostini G, Marini G, Nigro A, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Abramowicz H, Briskin G, Dagan S, Doeker T, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamauchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Fagerstroem CP, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Revel D, ZerZion D, Badgett WF, Breitweg J, Chapin D, Cross R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Bhadra S, Cardy ML, Frisken WR, Khakzad M, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasiniski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, Hj, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, D, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Strickland, E, Utley, Ml, Waugh, R, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Murray, Wn, Ochs, A, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Ginsburg, Cm, Kim, Cl, Li, C, Ling, Ty, Nylander, P, Park, Ih, Romanowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Frisken, Wr, Khakzad, M, and Schmidke, Wb
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Using the ZEUS detector at the HERA electron-proton collider, we have searched for lepton flavor violation in ep collisions at a center-of-mass energy (root s) of 300 GeV. Events of the type e + p --> l + X with a final-state lepton of high transverse momentum, l = mu or tau, were sought. No evidence was found for lepton flavor violation in the combined 1993 and 1994 data samples, for which the integrated luminosities were 0.84 pb(-1) for e(-)p collisions and 2.94 pb(-1) for e(+)p collisions. Limits on coupling vs. mass are provided for leptoquarks and R-parity violating squarks, For flavor violating couplings of electromagnetic strength, we set 95% confidence level lower limits on leptoquark masses between 207 GeV and 272 GeV, depending on the leptoquark species and final-state lepton. For leptoquark,masses larger than 300 GeV, limits on flavor-changing couplings are determined, many of which supersede prior limits from rare decay processes.
Published: 1997

32. Rapidity gaps between jets in photoproduction at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Repond J, Stanek R, Talaga RL, Zhang H, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Chiarini M, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Nemoz C, Palmonari F, Polini A, Sartorelli G, Timellini R, Garcia YZ, Zichichi A, Bornheim A, Crittenden J, Desch K, Diekmann B, Doeker T, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Mollen J, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Morgado CJS, OMara JA, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Rau RR, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Bernstein A, Caldwell A, Cartiglia N, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Piotrzkowski K, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Kotanski A, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Coldewey C, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Gutjahr B, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kopke L, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Monteiro T, Ng JST, Nickel S, Notz D, Ohrenberg K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Stiliaris E, Surrow B, Voss T, Westphal D, Wolf G, Youngman C, Zeuner W, Zhou JF, Grabosch HJ, Kharchilava A, Leich A, MARI, Stefano Maria, Mattingly MCK, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Anzivino G, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Freidhof A, SoldnerRembold S, Schroeder J, Trefzger T, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Neumann T, Sinkus R, Wick K, Badura E, Burow BD, Hagge L, Lohrmann E, Milewski J, Nakahata M, Pavel N, Poelz G, Schott W, Zetsche F, Bacon TC, Bruemmer N, Butterworth I, Harris VL, Hung BYH, Long KR, Miller DB, Morawitz PPO, Prinias A, Sedgbeer JK, Whitfield AF, Mallik U, McCliment E, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Hong S, Nam SW, Park SK, Suh MH, Yon SH, Imlay R, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Cases G, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Smith GR, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Sinclair LE, Stairs DG, StLaurent M, Ullmann R, Zacek G, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Krozhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Dake A, Engelen J, deKamps M, Kooijman P, Kruse A, Tiecke H, Verkerke W, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Honscheid K, Li C, Ling TY, McLean KW, Nylander P, Park IH, Romanowski TA, Seidlein R, Bailey DS, Byrne A, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Abbiendi G, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Bulmahn J, Butterworth JM, Feild RG, Oh BY, Okrasinski JR, Whitmore JJ, DAgostini G, Marini G, Nigro A, Tassi E, Hart JC, McCubbin NA, Prytz K, Shah TP, Short TL, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Zech G, Abramowicz H, Briskin G, Dagan S, HandelPikielny C, Levy A, Fleck JI, Hasegawa T, Hazumi M, Ishii T, Kuze M, Mine S, Nagasawa Y, Nakao M, Suzuki I, Tokushuku K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Nakamitsu Y, Yamauchi K, Cirio R, Costa M, Ferrero MI, Lamberti L, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Bandyopadhyay D, Benard F, Brkic M, Gingrich DM, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Teuscher RJ, Catterall CD, Jones JW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Blankenship K, Lu B, Mo LW, Bogusz W, Charchula K, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Eisenberg Y, Karshon U, Revel D, ZerZion D, Ali I, Badgett WF, Behrens B, Dasu S, Fordham C, Foudas C, Goussiou A, Loveless RJ, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Tsurugai T, Bhadra S, Cardy ML, Fagerstroem CP, Frisken WR, Furutani KM, Khakzad M, Murray WN, Schmidke WB, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bornheim, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Morgado, Cj, Omara, Ja, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Rau, Rr, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mari, Stefano Maria, Mattingly, Mck, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Bruemmer, N, Butterworth, I, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Krozhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Nylander, P, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, 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Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Jw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, I, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, Murray, Wn, and Schmidke, Wb
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Photoproduction events which have two or more jets have been studied in the W-gamma P range 135 GeV < W-gamma P < 280 GeV with the ZEUS detector at HERA, A class of events is observed with little hadronic activity between the jets, The jets are separated by pseudorapidity intervals (Delta eta) Of up to four units and have transverse energies greater than 6 GeV. A gap is defined as the absence between the jets of particles with transverse energy greater than 300 MeV. The fraction of events containing a gap is measured as a function of Delta eta. It decreases exponentially as expected for processes in which colour is exchanged between the jets, up to a value of Delta eta similar to 3, then reaches a constant value of about 0.1. The excess above the exponential fall-off can be interpreted as evidence for hard diffractive scattering via a strongly interacting colour singlet object.
Published: 1996

33. Measurement of elastic phi photoproduction at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasinski JR, Repond J, Stanek R, Talaga RL, Zhang H, Mattingly MCK, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Bornheim A, Crittenden J, Doeker T, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Mollen J, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Kotanski A, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Voss T, Westphal D, Wolf G, Youngman C, Zeuner W, Grabosch HJ, Kharchilava A, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle S, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Milewski J, Pavel N, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Cases G, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Li C, Ling TY, Nylander P, Park IH, Romanowski TA, Bailey DS, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Abbiendi G, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, Bulmahn J, Feild RG, Oh BY, Whitmore JJ, DAgostini G, Marini G, Nigro A, Tassi E, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Zech G, Abramowicz H, Briskin G, Dagan S, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamauchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Coldewey C, Eisenberg Y, Karshon U, Revel D, ZerZion D, Badgett WF, Breitweg J, Chapin D, Cross R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith W, Vaiciulis A, Wodarczyk M, Bhadra S, Cardy ML, Fagerstroem CP, Frisken WR, Khakzad M, Murray WN, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Bornheim, A, Crittenden, J, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Grabosch, Hj, Kharchilava, A, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Li, C, Ling, Ty, Nylander, P, Park, Ih, Romanowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Coldewey, C, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, W, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Khakzad, M, Murray, Wn, and Schmidke, Wb
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The production of phi mesons in the reaction e(+)p --> e(+)phi p (phi --> K+K-) at a median Q(2) of 10(-4) GeV2 has been studied with the ZEUS detector at HERA. The differential phi photoproduction cross section d sigma/dt has an exponential shape and has been determined in the kinematic range 0.1 < \t\ < 0.5 GeV2 and 60 < W < 80 GeV. An integrated cross section of sigma(gamma p-->phi p) = 0.96+/-0.19(-0.18)(+0.21) mu b has been obtained by extrapolating to t = 0. When compared to lower energy data, the results show a weak energy dependence of both sigma(gamma-->phi p) and the slope of the t distribution. The phi decay angular distributions are consistent with s-channel helicity conservation. From lower energies to HERA energies, the features of phi photoproduction are compatible with those of a soft diffractive process.
Published: 1996

34. Measurement of elastic omega photoproduction at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasinski JR, Repond J, Stanek R, Talaga RL, Zhang H, Mattingly MCK, Anselmo F, Antonioli P, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Pesci A, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Crittenden J, Deffner R, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Jakubowski Z, Przybycien MB, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Tassi E, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zeuner W, Grabosch HJ, Meyer A, Schlenstedt S, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle S, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Strickland E, Utley ML, Waugh R, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHU, Lamberti L, Long KR, Miller DB, Pavel N, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Murray WN, Ochs A, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina LA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Ginsburg CM, Kim CL, Li C, Ling TY, Nylander P, Park IH, Romanowski TA, Bailey DS, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, Bulmahn J, Feild RG, Oh BY, Whitmore JJ, DAgostini G, Marini G, Nigro A, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Abramowicz H, Briskin G, Dagan S, Doeker T, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamauchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Fagerstroem CP, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Revel D, ZerZion D, Badgett WF, Breitweg J, Chapin D, Cross R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Bhadra S, Cardy ML, Frisken WR, Khakzad M, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, Hj, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Strickland, E, Utley, Ml, Waugh, R, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhu, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Murray, Wn, Ochs, A, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, La, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Ginsburg, Cm, Kim, Cl, Li, C, Ling, Ty, Nylander, P, Park, Ih, Romanowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Frisken, Wr, Khakzad, M, and Schmidke, Wb
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Elastic photoproduction of vector mesons, gamma p --> Vp, has been extensively studied in fixed target experiments at centre-of-mass energies up to W approximate to 20 GeV. The production of rho(0), omega and phi is usually described in the framework of the vector meson dominance model (VDM) [1] and Regge theory [2]. The W dependence of the cross section can be parametrised in Regge theory by the sum of two terms, one due to Pomeron exchange and the other to Reggeon exchange, While the latter falls with W, the former is almost flat, Whereas rho(0) and phi production is predominantly due to Pomeron exchange at all energies, the energy behaviour of omega production investigated before HERA suggests a non-negligible contribution from Reggeon exchange. It is therefore of interest to analyse omega photoproduction at HERA, where Pomeron exchange should dominate. More specifically, it is important to establish if the features typical of elastic rho(0) and phi vector meson production are also observed in omega photoproduction at high energy. Among these features are the weak dependence of the elastic cross section on W, the exponential shape of the differential cross section in t, where t is the squared four momentum transferred at the proton vertex, and the observation that the vector meson retains the helicity of the photon (s-channel helicity conservation, SCHC), In addition, a comparison of the photoproduction cross sections of the light vector mesons rho(0) [3, 4], omega and phi [5] at HERA energies allows another check of their diffractive production mechanism. This paper reports a measurement of the photoproduction of omega mesons using the reaction ep --> e omega p with the ZEUS detector at HERA. The omega meson is observed via its decay into pi(+)pi(-)pi(0)(pi(0) --> gamma gamma) in the kinematic range 70 < W < 90 GeV and p(T)(2) < 0.6 GeV2, where p(T) is the transverse momentum of the omega with respect to the beam axis. For these events the scattered positron was not observed in the detector, thereby restricting the photon virtuality Q(2) to values smaller than 4 GeV2, with a median Q(2) of about 10(-4) GeV2.
Published: 1996

35. Measurement of the F-2 structure function in deep inelastic e(+)p scattering using 1994 data from the ZEUS detector at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasinski JR, Repond J, Stanek R, Talaga RL, Zhang H, Mattingly MCK, Anselmo F, Antonioli P, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Pesci A, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Crittenden J, Deffner R, Doeker T, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa H, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Jakubowski Z, Przybycien MB, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Tassi E, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zeuner W, Grabosch HJ, Kharchilava A, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle S, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Pavel N, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Li C, Ling TY, Nylander P, Park IH, Romanowski TA, Bailey DS, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, Bulmahn J, Feild RG, Oh BY, Whitmore JJ, DAgostini G, Marini G, Nigro A, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Zech G, Abramowicz H, Briskin G, Dagan S, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamauchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Fagerstroem CP, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Revel D, ZerZion D, Badgett WF, Breitweg J, Chapin D, Cross R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Bhadra S, Cardy ML, Frisken WR, Khakzad M, Murray WN, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, H, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, Hj, Kharchilava, A, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Li, C, Ling, Ty, Nylander, P, Park, Ih, Romanowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Frisken, Wr, Khakzad, M, Murray, Wn, and Schmidke, Wb
Abstract: We present measurements of the structure function F-2 in e(+)p scattering at HERA in the range 3.5 GeV2 < Q(2) < 5000 GeV2. A new reconstruction method has allowed a significant improvement in the resolution of the kinematic variables and an extension of the kinematic region covered by the experiment. Ac Q(2) < 35 GeV2 the range in x now spans 6.3 . 10(-5) < x < 0.08 providing overlap with measurements from fixed target experiments. At values of Q(2) above 1000 GeV2 the x range extends to 0.5. Systematic errors below 5% have been achieved for most of the kinematic region. The structure function rises as x decreases; the rise becomes more pronounced as Q(2) increases. The behaviour of the structure function data is well described by next-to-leading order perturbative QCD as implemented in the DGLAP evolution equations.
Published: 1996

36. Measurement of thee reaction gamma*p->phi p in deep, inelastic e(+)p scattering at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasinski JR, Repond J, Stanek R, Talaga RL, Zhang H, Mattingly MCK, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Crittenden J, Deffner R, Doeker T, Eckert K, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Staub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Jakubowski Z, Przybycien MB, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zeuner W, Grabosch HJ, Kharchilava A, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle S, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Pavel N, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Li C, Ling TY, Nylander P, Park IH, Rowanowski TA, Bailey DS, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, Bulmahn J, Feild RG, Oh BY, Whitmore JJ, DAgostini G, Marini G, Nigro A, Tassi E, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Zech G, Abramowicz H, Briskin G, Dagan S, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamauchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Fagerstroem CP, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Revel D, ZerZion D, Badgett WF, Breitweg J, Chapin D, Cross R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Bhadra S, Cardy ML, Frisken WR, Khakzad M, Murray WN, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Doeker, T, Eckert, K, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Staub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, Hj, Kharchilava, A, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Li, C, Ling, Ty, Nylander, P, Park, Ih, Rowanowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Frisken, Wr, Khakzad, M, Murray, Wn, and Schmidke, Wb
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The production of phi mesons in the reaction e(+)p --> e(+)phi p (phi --> K+K-), for 7 < Q(2) < 25 GeV2 and for virtual photon-proton centre of mass energies (W) in the range 42-134 GeV, has been studied with the ZEUS detector at HERA. When compared to lower energy data at similar Q(2), the results show that the gamma*p --> phi p cross section rises strongly with W. This behaviour is similar to that previously found for the gamma*p --> rho(0)p cross section. This strong dependence cannot be explained by production through soft pomeron exchange, It is, however, consistent with perturbative QCD expectations, where it reflects the rise of the gluon momentum density in the proton at small x. The ratio of sigma(phi)/sigma(rho(0)), which has previously been determined by ZEUS to be 0.065 +/- 0.013 (stat.) in photoproduction at a mean W of 70 GeV, is measured to be 0.18 +/- 0.05 (stat.) +/- 0.03 (syst.) at a mean Q(2) of 12.3 GeV2 and mean W of approximate to 100 GeV and is thus approaching at large Q(2) the value of 2/9 predicted from the quark charges of the vector mesons and a flavour independent production mechanism.
Published: 1996

37. Observation of events with an energetic forward neutron in deep inelastic scattering at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasinski JR, Repond J, Stanek R, Talaga RL, Zhang H, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo E, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari E, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Crittenden J, Deffner R, Doeker T, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Ameodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Jakubowski Z, Przybycien MB, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zeuner W, Grabosch HJ, Kharchilava A, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle S, Bromley JT, Brook HN, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Pavel N, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Yu O, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Li C, Ling TY, Nylander P, Park JH, Romankowski TA, Bailey DS, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, Bulmahn J, Feild RG, Oh BY, Whitmore JJ, DAgostini G, Marini G, Nigro A, Tassi E, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Zech G, Abramowicz H, Briskin G, Dagan S, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamuchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Fagerstroem CP, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Revel D, ZerZion D, Badgett WF, Breiweg J, Chapin D, Cross RT, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarcyk M, Bhadra S, Cardy ML, Frisken WR, Furutani KM, Khakzad M, Murray WN, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, E, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, E, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Ameodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, Hj, Kharchilava, A, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Hn, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Yu, O, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Li, C, Ling, Ty, Nylander, P, Park, Jh, Romankowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamuchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breiweg, J, Chapin, D, Cross, Rt, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarcyk, M, Bhadra, S, Cardy, Ml, Frisken, Wr, Furutani, Km, Khakzad, M, Murray, Wn, and Schmidke, Wb
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: In deep inelastic neutral current scattering of positrons acid protons at the center of mass energy of 300 GeV, we observe, with the ZEUS detector, events with a high energy neutron produced at very small scattering angles with respect to the proton direction. The events constitute a fixed fraction of the deep inelastic, neutral current event sample independent of Bjorken x and Q(2) in the range 3 . 10(-4)
Published: 1996

38. Inclusive charged particle distributions in deep inelastic scattering events at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Repond J, Stanek R, Talaga RL, Zhang H, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Bornheim A, Crittenden J, Desch K, Diekmann B, Doeker T, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Mollen J, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Morgado CJS, OMara JA, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Rau RR, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa N, Susinno G, Bernstein A, Caldwell A, Cartiglia N, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Piotrzkowski K, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Kotanski A, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Coldewey C, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Gutjahr B, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kopke L, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Monteiro T, Ng JST, Nickel S, Notz D, Ohrenberg K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Stiliaris E, Surrow B, Voss T, Westphal D, Wolf G, Youngman C, Zeuner W, Zhou JF, Grabosch HJ, Kharchilava A, Leich A, Mattingly MCK, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Freidhof A, SoldnerRembold S, Schroeder J, Trefzger T, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Neumann T, Sinkus R, Wick K, Badura E, Burow BD, Hagge L, Lohrmann E, Milewski J, Nakahata M, Pavel N, Poelz G, Schott W, Zetsche F, Bacon TC, Bruemmer N, Butterworth I, Harris VL, Hung BYH, Long KR, Miller DB, Morawitz PPO, Prinias A, Sedgbeer JK, Whitfield AF, Mallik U, McCliment E, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Imlay R, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Cases G, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Smith GR, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Sinclair LE, Stairs DG, StLaurent M, Ullmann R, Zacek G, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Dake A, Engelen J, deKamps M, Kooijman P, Kruse A, Tiecke H, Verkerke W, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Honscheid K, Li C, Ling TY, McLean KW, Nylander P, Park IH, Romanowski TA, Seidlein R, Bailey DS, Byrne A, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Abbiendi G, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Bulmahn J, Butterworth JM, Feild RG, Oh BY, Okrasinski JR, Whitmore JJ, DAgostini G, Marini G, Nigro A, Tassi E, Hart JC, McCubbin NA, Prytz K, Shah TP, Short TL, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Zech G, Abramowicz H, Briskin G, Dagan S, Levy A, Fleck JI, Hasegawa T, Hazumi M, Ishii T, Kuze M, Mine S, Nagasawa Y, Nakao M, Suzuki I, Tokushuku K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Nakamitsu Y, Yamauchi K, Cirio R, Costa M, Ferrero MI, Lamberti L, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Teuscher RJ, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Blankenship K, Lu B, Mo LW, Bogusz W, Charchula K, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Eisenberg Y, Karshon U, Revel D, ZerZion D, Ali I, Badgett WF, Behrens B, Dasu S, Fordham C, Foudas C, Goussiou A, Loveless RJ, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Tsurugai T, Bhadra S, Cardy ML, Fagerstroem CP, Frisken WR, Khakzad M, Murray WN, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Bornheim, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Morgado, Cj, Omara, Ja, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Rau, Rr, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, N, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mari, Stefano Maria, Mattingly, Mck, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Bruemmer, N, Butterworth, I, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Nylander, P, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Okrasinski, Jr, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, I, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Khakzad, M, Murray, Wn, and Schmidke, Wb
Subjects: High Energy Physics::Experiment
Abstract: A measurement of inclusive charged particle distributions in deep inelastic ep scattering for gamma*p centre-of-mass energies 75 < W < 175 GeV and momentum transfer squared 10 < Q(2) < 160 GeV2 from the ZEUS detector at HERA is presented. The differential charged particle rates in the gamma*p centre-of-mass system as a function of the scaled longitudinal momentum, x(F), and of the transverse momentum, p(t)* and [p(t)(*2)], as a function of x(F), W and Q(2) are given, Separate distributions are shown for events with (LRG) and without (NRG) a rapidity gap with respect to the proton direction. The data are compared with results from experiments at lower beam energies, with the naive quark parton model and with parton models including perturbative QCD corrections, The comparison shows the importance of the higher order QCD processes. Significant differences of the inclusive charged particle rates between NRG and LRG events at the same W are observed, The value of [p(t)(*2)] for LRG events with a hadronic mass M(X), which excludes the forward produced baryonic system, is similar to the [p(t)(*2)] value observed in fixed target experiments at W approximate to M(X).
Published: 1996

39. Measurement of the proton structure function F-2 at low x and low Q(2) at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Repond J, Stanek R, Talaga RL, Zhang H, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Chiarini M, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Nemoz C, Palmonari F, Polini A, Sartorelli G, Timellini R, Garcia YZ, Zichichi A, Bornheim A, Crittenden J, Desch K, Diekmann B, Doeker T, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Mollen J, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Morgado CJS, OMara JA, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Rau RR, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Bernstein A, Caldwell A, Cartiglia N, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Piotrzkowski K, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Kotanski A, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Coldewey C, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Gutjahr B, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kopke L, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Marczak O, Monteiro T, Ng JST, Nickel S, Notz D, Ohrenberg K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Stiliaris E, Surrow B, Voss T, Westphal D, Wolf G, Youngman C, Zeuner W, Zhou JF, Grabosch HJ, Kharchilava A, Leich A, Mattingly MCK, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Anzivino G, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Freidhof A, SoldnerRembold S, Schroeder J, Trefzger T, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Neumann T, Sinkus R, Wick K, Badura E, Burow BD, Hagge L, Lohrmann E, Milewski J, Nakahata M, Pavel N, Poelz G, Schott W, Zetsche F, Bacon TC, Bruemmer N, Butterworth I, Harris VL, Hung BYH, Long KR, Miller DB, Morawitz PPO, Prinias A, Sedgbeer JK, Whitfield AF, Mallik U, McCliment E, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Hong S, Nam SW, Park SK, Suh MH, Yon SH, Imlay R, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Cases G, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Smith GR, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Sinclair LE, Stairs DG, StLaurent M, Ullmann R, Zacek G, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Dake A, Engelen J, deKamps M, Kooijman P, Kruse A, Tiecke H, Verkerke W, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Honscheid K, Li C, Ling TY, McLean KW, Nylander P, Park IH, Romanowski TA, Seidlein R, Bailey DS, Byrne A, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Abbiendi G, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Bulmahn J, Butterworth JM, Feild RG, Oh BY, Okrasinski JR, Whitmore JJ, DAgostini G, Marini G, Nigro A, Tassi E, Hart JC, McCubbin NA, Prytz K, Shah TP, Short TL, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Zech G, Abramowicz H, Briskin G, Dagan S, HandelPikielny C, Levy A, Fleck JI, Hasegawa T, Hazumi M, Ishii T, Kuze M, Mine S, Nagasawa Y, Nakao M, Suzuki I, Tokushuku K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Nakamitsu Y, Yamauchi K, Cirio R, Costa M, Ferrero MI, Lamberti L, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Bandyopadhyay D, Benard F, Brkic M, Gingrich DM, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Teuscher RJ, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Blankenship K, Lu B, Mo LW, Bogusz W, Charchula K, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Eisenberg Y, Karshon U, Revel D, ZerZion D, Ali L, Badgett WF, Behrens B, Dasu S, Fordham C, Foudas C, Goussiou A, Loveless RJ, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Tsurugai T, Bhadra S, Cardy ML, Fagerstroem CP, Frisken WR, Furutani KM, Khakzad M, Murray WN, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bornheim, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Morgado, Cj, Omara, Ja, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Rau, Rr, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Marczak, O, Monteiro, T, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mari, Stefano Maria, Mattingly, Mck, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Bruemmer, N, Butterworth, I, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Nylander, P, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Okrasinski, Jr, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Handelpikielny, C, Levy, A, Fleck, Ji, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, L, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, Murray, Wn, and Schmidke, Wb
Abstract: We report on a measurement of the proton structure function F-2 in the range 3.5 x 10(-5) less than or equal to x less than or equal to 4 x 10(-3) and 1.5 GeV2 less than or equal to Q(2) less than or equal to 15 GeV2 at the ep collider HERA operating at a centre-of-mass energy of root s = 300 GeV. The rise of F-2 with decreasing x observed in the previous HERA measurements persists in this lower x and Q(2) range. The Q(2) evolution of F-2, even at the lowest Q(2) and x measured, is consistent with perturbative QCD.
Published: 1996

40. Study of charged-current ep interactions at Q(2)>200 GeV2 with the ZEUS detector at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasinski JR, Repond J, Stanek R, Talaga RL, Zhang H, Mattingly MCK, Antonioli P, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Pesci A, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Crittenden J, Deffner R, Doeker T, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Jakubowski Z, Przybycien MB, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling H, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Tassi E, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zeuner W, Grabosch HJ, Kharchilava A, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle S, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Pavel N, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, Cloth P, Filges D, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Li C, Ling TY, Nylander P, Park IH, Romanowski TA, Bailey DS, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, Bulmahn J, Feild RG, Oh BY, Whitmore JJ, DAgostini G, Marini G, Nigro A, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Abramowicz H, Briskin G, Dagan S, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamauchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Fagerstroem CP, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Adamus M, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Revel D, ZerZion D, Badgett WF, Breitweg J, Chapin D, CRoss R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Bhadra S, Cardy ML, Frisken WR, Khakzad M, Murray WN, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, Hj, Kharchilava, A, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Li, C, Ling, Ty, Nylander, P, Park, Ih, Romanowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Frisken, Wr, Khakzad, M, Murray, Wn, and Schmidke, Wb
Abstract: Deep inelastic charged-current reactions have been studied in e(+)p and e(-)p collisions at a center of mass energy of about 300 GeV in the kinematic region Q(2)>200 GeV2 and x>0.006 using the ZEUS detector at HERA, The integrated cross sections for Q(2)>200 GeV2 are found to be sigma(e+p-->)=30.3(-4.2 -2.6)(+5.5 +1.6) pb and sigma(e-p-->upsilon X)=54.7(-9.8 -3.4)(+15.9 +2.8) pb. Differential cross sections have been measures as functions of the variables x, y and Q(2). From the measured differential cross sections d sigma/dQ(2), the W boson mass is determined to be M(W)=79(-7 -4)(+8 +4) GeV. Measured jet rates and transverse energy profiles agree with model predictions, A search for charged-current interactions with a large rapidity gap yielded one candidate event, corresponding to a cross section of sigma(e+p-->)(Q(2)>200 GeV2; eta(max)
Published: 1996

41. Dijet angular distributions in direct and resolved photoproduction at HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Okrasinski JR, Repond J, Stanek R, Talaga RL, Zhang H, Mattingly MCK, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Bruni P, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Polini A, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Crittenden J, Deffner R, Doeker T, Eckert M, Feld L, Frey A, Geerts M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Mengel S, Paul E, Pfeiffer M, Rembser C, Schramm D, Stamm J, Wedemeyer R, CampbellRobson S, Cassidy A, Cottingham WN, Dyce N, Foster B, George S, Hayes ME, Heath GP, Heath HF, Piccioni D, Roff DG, Tapper RJ, Yoshida R, Arneodo M, Ayad R, Capua M, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Caldwell A, Cartiglia N, Jing Z, Liu W, Parsons JA, Ritz S, Sciulli F, Straub PB, Wai L, Yang S, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Jakubowski Z, Przybycien MB, Zachara M, Zawiejski L, Adamczyk L, Bednarek B, Jelen K, Kisielewska D, Kowalski T, Przybycien M, RulikowskaZarebska E, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Flasinski M, Gilkinson DJ, Glasman C, Gottlicher P, GrosseKnetter J, Haas T, Hain W, Hasell D, Hessling A, Iga Y, Johnson KF, Joos P, Kasemann M, Klanner R, Koch W, Kotz U, Kowalski H, Labs J, Ladage A, Lohr B, Lowe M, Luke D, Mainusch J, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Piotrzkowski K, Roco M, Rohde M, Roldan J, Schneekloth U, Schulz W, Selonke F, Surrow B, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zeuner W, Grabosch HJ, Kharchilava A, Meyer A, Schlenstedt S, Wulff N, Barbagli G, Gallo E, Pelfer P, Maccarrone G, DePasquale S, Votano L, Bamberger A, Eisenhardt S, Trefzger T, Wolfle S, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Saxon DH, Sinclair LE, Utley ML, Wilson AS, Dannemann A, Holm U, Horstmann D, Sinkus R, Wick K, Burow BD, Hagge L, Lohrmann E, Poelz G, Schott W, Zetsche F, Bacon TC, Brummer N, Butterworth I, Harris VL, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Pavel N, Prinias A, Sedgbeer JK, Sideris D, Whitfield AF, Mallik U, Wang MZ, Wang S, Wu JT, An SH, Cho GH, Ko BJ, Lee SB, Nam SW, Park HS, Park SK, Kartik S, Kim HJ, McNeil RR, Metcalf W, Nadendla VK, Barreiro F, Fernandez JP, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, delPeso J, Puga J, Terron J, deTroconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Lim JN, Matthews CG, Patel PM, Riveline M, Stairs DG, StLaurent M, Ullmann R, Zacek G, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Gladilin LK, Golubkov YA, Kobrin VD, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Savin AA, Shcheglova LM, Solomin AN, Zotov NP, Botje M, Chlebana F, Engelen J, deKamps M, Kooijman P, Kruse A, vanSighem A, Tiecke H, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, deWolf E, vanWoudenberg R, Acosta D, Bylsma B, Durkin LS, Gilmore J, Li C, Ling TY, Nylander P, Park IH, Romanowski TA, Bailey DS, Cashmore RJ, CooperSarkar AM, Devenish RCE, Harnew N, Lancaster M, Lindemann L, McFall JD, Nath C, Noyes VA, Quadt A, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Wilson FF, Yip T, Bertolin A, Brugnera R, Carlin R, DalCorso F, DeGiorgi M, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Zuin F, DAgostini G, Marini G, Nigro A, Tassi E, Hart JC, McCubbin NA, Shah TP, Barberis E, Dubbs T, Heusch C, VanHook M, Lockman W, Rahn JT, Sadrozinski HFW, Seiden A, Williams DC, Biltzinger J, Seifert RJ, Schwarzer O, Walenta AH, Zech G, Abramowicz H, Briskin G, Dagan S, Levy A, Fleck JI, Inuzuka M, Ishii T, Kuze M, Mine S, Nakao M, Suzuki I, Tokushuku K, Umemori K, Yamada S, Yamazaki Y, Chiba M, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Yamuchi K, Cirio R, Costa M, Ferrero MI, Maselli S, Peroni C, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Benard F, Brkic M, Fagerstroem CP, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sampson CR, Simmons D, Teuscher RJ, Butterworth JM, Catterall CD, Jones TW, Kaziewicz PB, Lane JB, Saunders RL, Shulman J, Sutton MR, Lu B, Mo LW, Bogusz W, Ciborowski J, Gajewski J, Grzelak G, Kasprzak M, Krzyzanowski M, Muchorowski K, Nowak RJ, Pawlak JM, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Zarnecki AF, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Revel D, ZerZion D, Badgett WF, Breitweg J, Chapin D, Cross R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Silverstein S, Smith WH, Vaiciulis A, Wodarczyk M, Bhadra S, Cardy ML, Frisken WR, Khakzad M, Murray WN, Schmidke WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, Jr, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Mattingly, Mck, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Haas, T, Hain, W, Hasell, D, Hessling, A, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, Jst, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, Hj, Kharchilava, A, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, Bd, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Brummer, N, Butterworth, I, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Mz, Wang, S, Wu, Jt, An, Sh, Cho, Gh, Ko, Bj, Lee, Sb, Nam, Sw, Park, H, Park, Sk, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Riveline, M, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Vansighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Li, C, Ling, Ty, Nylander, P, Park, Ih, Romanowski, Ta, Bailey, D, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamuchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Benard, F, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Zerzion, D, Badgett, Wf, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, Ml, Frisken, Wr, Khakzad, M, Murray, Wn, and Schmidke, Wb
Subjects: Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Jet photoproduction, where the two highest transverse energy (E(T)(jet)) jets have E(T)(jet) above 6 GeV and a jet-jet invariant mass above 23 GeV, has been studied with the ZEUS detector at the HERA ep collider. Resolved and direct photoproduction samples have been separated. The cross section as a function of the angle between the jet-jet axis and the beam direction in the dijet rest frame has been measured for the two samples. The measured angular distributions differ markedly from each other. They agree with the predictions of QCD calculations, where the different angular distributions reflect the different spins of the quark and gluon exchanged in the hard subprocess.
Published: 1996

42. MEASUREMENT OF ALPHA(S) FROM JET RATES IN DEEP-INELASTIC SCATTERING AT HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MIKUNAS D, MUSGRAVE B, REPOND J, STANEK R, TALAGA RL, ZHANG H, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CONTIN A, CORRADI M, GIALAS I, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, BORNHEIM A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, ECKERT M, FELD L, FREY A, GEERTS M, GROTHE M, HARTMANN H, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MENGEL S, MOLLEN J, PAUL E, PFEIFFER M, REMBSER C, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, COTTINGHAM WN, DYCE N, FOSTER B, GEORGE S, HAYES ME, HEATH GP, HEATH HF, MORGADO CJS, OMARA JA, PICCIONI D, ROFF DG, TAPPER RJ, YOSHIDA R, RAU RR, ARNEODO M, CAPUA M, GARFAGNINI A, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, CARTIGLIA N, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, ZHU Q, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZAREBSKA E, SUSZYCKI L, ZAJAC J, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BEIER H, BIENLEIN JK, COLDEWEY C, DEPPE O, DESLER K, DREWS G, FLASINSKI M, GILKINSON DJ, GLASMAN C, GOTTLICHER P, GROSSEKNETTER J, GUTJAHR B, HAAS T, HAIN W, HASELL D, HESSLING H, IGA Y, JOHNSON KF, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MAINUSCH J, MANCZAK O, MONTEIRO T, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ W, SELONKE F, STILIARIS E, SURROW B, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, ZEUNER W, ZHOU JF, GRABOSCH HJ, KHARCHILAVA A, LEICH A, MATTINGLY MCK, MEYER A, SCHLENSTEDT S, WULFF N, BARBAGLI G, PELFER P, ANZIVINO G, MACCARRONE G, DEPASQUALE S, VOTANO L, BAMBERGER A, EISENHARDT S, FREIDHOF A, SOLDNERREMBOLD S, SCHROEDER J, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, SAXON DH, UTLEY ML, WILSON AS, DANNENMANN A, HOLM U, HORSTMANN D, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, HAGGE L, LOHRMANN E, MILEWSKI J, NAKAHATA M, PAVEL N, POELZ G, SCHOTT W, ZETSCHE F, BACON TC, BRUEMMER N, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG BYH, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, WANG S, WU JT, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEIL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, FERNANDEZ JP, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, MARTINEZ M, DELPESO J, PUGA J, TERRON J, DETROCONIZ JF, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIN JN, MATTHEWS CG, PATEL PM, SINCLAIR LW, STAIRS DG, STLAURENT M, ULLMANN R, ZACEK G, BASHKIROV V, DOLGOSHEIN BA, STIFUTKIN A, BASHINDZHAGYAN GL, ERMOLOV PF, GLADILIN LK, GOLUBKOV YA, KOBRIN VD, KORZHAVINA IA, KUZMIN VA, LUKINA OY, PROSKURYAKOV AS, SAVIN AA, SHCHEGLOVA LM, SOLOMIN AN, ZOTOV NP, BOTJE M, CHLEBANA F, DAKE A, ENGELEN J, DEKAMPS M, KOOIJMAN P, KRUSE A, TIECKE H, VERKERKE W, VREESWIJK M, WIGGERS L, DEWOLF E, VANWOUDENBERG R, ACOSTA D, BYLSMA B, DURKIN LS, GILMORE J, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, NYLANDER P, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BYRNE A, CASHMORE RJ, COOPERSARKAR AM, DEVENISH RCE, HARNEW N, LANCASTER M, LINDEMANN L, MCFALL JD, NATH C, NOYES VA, QUADT A, TICKNER JR, UIJTERWAAL H, WALCZAK R, WATERS DS, WILSON FF, YIP T, ABBIENDI G, BERTOLIN A, BRUGNERA R, CARLIN R, DALCORSO F, DEGIORGI M, DOSSELLI U, LIMENTANI S, MORANDIN M, POSOCCO M, STANCO L, STROILI R, VOCI C, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, OKRASINSKI JR, WHITMORE JJ, DAGOSTINI G, MARINI G, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, DUBBS T, HEUSCH C, VANHOOK M, LOCKMAN W, RAHN JT, SADROZINSKI HFW, SEIDEN A, WILLIAMS DC, BILTZINGER J, SEIFERT RJ, SCHWARZER O, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, HANDELPIKIELNY C, LEVY A, FLECK JI, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAKAMITSU Y, YAMAUCHI K, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARDO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, GINGRICH DM, HARTNER GF, JOO KK, LEVMAN GM, MARTIN JF, ORR RS, POLENZ S, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, LU B, MO LW, BOGUSZ W, CHARCHULA K, CIBOROWSKI J, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, TYMIENIECKA T, WROBLEWSKI AK, ZAKRZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, KARSHON U, REVEL D, ZERZION D, ALI I, BADGETT WF, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, SILVERSTEIN S, SMITH WH, VAICIULIS A, WODARCZYK M, TSURUGAI T, BHADRA S, CARDY ML, FAGERSTROEM CP, FRISKEN WR, FURUTANI KM, KHAKZAD M, SCHMIDKE WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Bornheim, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Morgado, Cj, Omara, Ja, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Rau, Rr, Arneodo, M, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mattingly, Mck, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Utley, Ml, Wilson, A, Dannenmann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Bruemmer, N, Butterworth, I, Gallo, E, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lin, Jn, Matthews, Cg, Patel, Pm, Sinclair, Lw, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Nylander, P, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Okrasinski, Jr, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Handelpikielny, C, Levy, A, Fleck, Ji, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, I, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, and Schmidke, Wb
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment
Abstract: Jet production in deep inelastic scattering for 120 < Q(2) < 3600 GeV2 has been studied using data from an integrated luminosity of 3.2 pb(-1) collected with the ZEUS detector at HERA. Jets are identified with the JADE algorithm. A cut on the angular distribution of parton emission in the gamma(8)-parton centre-of-mass system minimises the experimental and theoretical uncertainties in the determination of the jet rates. The jet rates, when compared to O(alpha(s)(2)) perturbative QCD calculations, allow a precise determination of alpha(s)(Q) in three Q(2)-intervals. The values are consistent with a running of alpha(s)(Q), as expected from QCD. Extrapolating to Q = M(Z0) yields alpha(s)(M(Z0)) = 0.117 +/- 0.005 (stat)(-0.005)(+0.004) (syst(exp)) +/- 0.007 (syst(theory)).
Published: 1995

43. MEASUREMENT OF CHARGED AND NEUTRAL-CURRENT E(-)P DEEP-INELASTIC SCATTERING CROSS-SECTIONS AT HIGH Q(2) RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MIKUNAS D, MUSGRAVE B, REPOND J, STANEK R, TALAGA RL, ZHANG H, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CONTIN A, CORRADI M, GIALAS I, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, ECKERT M, FELD L, FREY A, GEERTS M, GEITZ G, GROTHE M, HAAS T, HARTMANN H, HAUN D, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MASS A, MENGEL S, MOLLEN J, PAUL E, REMBSER C, SCHATTEVOY R, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, DYCE N, FOSTER B, GEORGE S, GILMORE R, HEATH GP, HEATH HF, LLEWELLYN TJ, MORGADO CJS, NORMAN DJP, OMARA JA, TAPPER RJ, WILSON S, YOSHIDA R, RAU RR, ARNEODO M, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, CARTIGLIA N, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, ZHU Q, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZAREBSKA E, SUSZYCKI L, ZAJAC J, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BEIER H, BIENLEIN JK, COLDEWEY C, DEPPE O, DESLER K, DREWS G, FLASINSKI M, GILKINSON DJ, GLASMAN C, GOTTLICHER P, GROSSEKNETTER J, GUTJAHR B, HAIN W, HASELL D, HESSLING H, HULTSCHIG H, IGA Y, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MANCZAK O, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ W, SELONKE F, STILIARIS E, SURROW B, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, ZHOU JF, GRABOSCH HJ, KHARCHILAVA A, LEICH A, MATTINGLY M, MEYER A, SCHLENSTEDT S, WULFF N, BARBAGLI G, PELFER P, ANZIVINO G, MACCARONE G, DEPASQUALE S, VOTANO L, BAMBERGER A, EISENHARDT S, FREIDHOF A, SOLDNERREMBOLD S, SCHROEDER J, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, FLECK JI, SAXON DH, UTLEY ML, WILSON AS, DANNEMANN A, HOLM U, HORSTMANN D, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, HAGGE L, LOHRMANN E, MAINUSCH J, MILEWSKI J, NAKAHATA N, PAVEL N, POELZ G, SCHOTT W, ZETSCHE F, BACON TC, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG BYH, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, WANG S, WU JT, ZHANG Y, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEIL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, DELPESO J, PUGA J, TERRON J, DETROCONIZ JF, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIM JN, MATTHEWS CG, PATEL PM, SINCLAIR LKE, STAIRS DG, STLAURENT M, ULLMANN R, ZACEK G, BASHKIROV V, DOLGOSHEIN BA, STIFUTKIN A, BASHINDZHAGAYAN GL, ERMOLOV PF, GLADILIN LK, GOLUBKOV YA, KOBRIN VD, KUZMIN VA, PROSKURYAKOV AS, SAVIN AA, SHCHEGLOVA LM, SOLOMIN AN, ZOTOV NP, BOTJE M, CHLEBANA F, DAKE A, ENGELEN J, DEKAMPS M, KOOIJMAN P, KRUSE A, TIECKE H, VERKERKE W, VREESWIJK M, WIGGERS L, DEWOLF E, VANWOUDENBERG R, ACOSTA D, BYLSMA B, DURKIN LS, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BLAIR GA, BYRNE A, CASHMORE RJ, COOPERSARKAR AM, DANIELS D, DEVENISH RCE, HARNEW N, LANCASTER M, LUFFMAN PE, LINDEMANN L, MCFALL JD, NATH C, NOYES VA, QUADT A, UIJTERWAAL H, WALCZAK R, WILSON FF, YIP T, ABBIENDI G, BERTOLIN A, BRUGNERA R, CARLIN R, DALCORSO F, DEGIORGI M, DOSSELLI U, LIMENTANI S, MORANDIN M, POSOCCO M, STANCO L, STROILI R, VOCI C, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, WHITMORE JJ, DAGOSTINI G, MARINI G, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, DUBBS T, HEUSCH C, VANHOOK M, HUBBARD B, LOCKMAN W, RAHN JT, SADROZINSKI HFW, SEIDEN A, BILTZINGER J, SCHWARZER O, SEIFERT RJ, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, LEVY A, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAKAMITSU Y, YAMAUCHI K, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARDO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, CROMBIE MB, GINGRICH DM, HARTNER GF, JOO KK, LEVMAN GM, MARTIN JF, ORR RS, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, KOCHOCKI J, LU B, MO LW, BOGUSZ W, CHARCHULA K, CIBOROWSKI J, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, TYMIENIECKA T, WROBLEWSKI AK, ZAKRZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, KARSHON U, REVEL D, ZERZION D, ALI I, BADGETT WF, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, SILVERSTEIN S, SMITH WH, VAICIULIS A, WODARCZYK M, TSURUGAI T, BHADRA S, CARDY ML, FAGERSTROEM CP, FRISKEN WR, FURUTANI KM, KHAKZAD M, SCHMIDKE WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Geitz, G, Grothe, M, Haas, T, Hartmann, H, Haun, D, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Mari, Stefano Maria, Mass, A, Mengel, S, Mollen, J, Paul, E, Rembser, C, Schattevoy, R, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Dyce, N, Foster, B, George, S, Gilmore, R, Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cj, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, S, Yoshida, R, Rau, Rr, Arneodo, M, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Hain, W, Hasell, D, Hessling, H, Hultschig, H, Iga, Y, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Manczak, O, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mattingly, M, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Pelfer, P, Anzivino, G, Maccarone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Fleck, Ji, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Mainusch, J, Milewski, J, Nakahata, N, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Butterworth, I, Gallo, E, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Zhang, Y, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Lke, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagayan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Blair, Ga, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Daniels, D, Devenish, Rce, Harnew, N, Lancaster, M, Luffman, Pe, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Uijterwaal, H, Walczak, R, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Hubbard, B, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Biltzinger, J, Schwarzer, O, Seifert, Rj, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Kochocki, J, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, I, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, and Schmidke, Wb
Subjects: High Energy Physics::Experiment
Abstract: Deep inelastic e-p scattering has been studied in both the charged current (CC) and neutral current (NC) reactions at momentum transfers squared Q(2) above 400 GeV2 using the ZEUS detector at the HERA ep collider. The CC and NC total cross sections, the NC to CC cross section ratio, and the differential cross sections d sigma/dQ(2) are presented. From the Q(2) dependence of the CC cross section, the mass term in the CC propagator is determined to be M(W) = 76 +/- 16 +/- 13 GeV.
Published: 1995

44. EXTRACTION OF THE GLUON DENSITY OF THE PROTON AT X RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MUSGRAVE B, REPOND J, SCHLERETH J, STANEK R, TALAGA RL, THRON J, ARZARELLO F, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CIRALLI F, CONTIN A, DAURIA S, FRASCONI F, GIALAS I, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, ECKERT M, FELD L, FREY A, GEERTS M, GEITZ G, GROTHE M, HARTMANN H, HAUN D, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MASS A, MENGEL S, MOLLEN J, PAUL E, REMBSER C, SCHATTEVOY R, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, DYCE N, FOSTER B, GEORGE S, GILMORE R, HEATH GP, HEATH HF, LLEWELLYN TJ, MORGADO CJS, NORMAN DJP, OMARA JA, TAPPER RJ, WILSON SS, YOSHIDA R, RAU RR, AMEODO M, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, ESKREYS K, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZAREBSKA E, SUSZYCKI L, ZAJAC J, KEDZIERSKI T, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BIENLEIN JK, BOTTCHER S, COLDEWEY C, DREWS G, FLASINSKI M, GILKINSON DJ, GOTTLICHER P, GUTJAHR B, HAAS T, HAIN W, HASELL D, HESSLING H, HULTSCHIG H, IGA Y, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, KROGER W, KRUGERS J, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MANCZAK O, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ W, SELONKE F, STILIARIS E, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, GRABOSCH HJ, LEICH A, MEYER A, RETHFELDT C, SCHLENSTEDT S, BARBAGLI G, PELFER P, ANZIVINO G, MACCARRONE G, DEPASQUALE S, QIAN S, VOTANO L, BAMBERGER A, FREIDHOF A, POSER T, SOLDNERREMBOLD S, SCHROEDER J, THEISEN G, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, FLECK I, JAMIESON VA, SAXON DH, UTLEY ML, WILSON AS, DANNEMANN A, HOLM U, HORSTMANN D, KAMMERLOCHER H, KREBS B, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, FURTJES A, HAGGE L, LOHRMANN E, MAINUSCH J, MILEWSKI J, NAKAHATA M, PAVEL N, POELZ G, SCHOTT W, TERRON J, ZETSCHE F, BACON TC, BEUSELINCK R, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG BH, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, WANG S, WU JT, ZHANG Y, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEIL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, DELPESO J, PUGA J, DETROCONIZ JF, IKRAIAM F, MAYER JK, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIM JN, MATTHEWS CG, PATEL PM, SINCLAIR LE, STAIRS DG, LAURENT MS, ULLMANN R, ZACEK G, BASHKIROV V, DOLGOSHEIN BA, STIFUTKIN A, ACOSTA D, BYLSMA B, DURKIN LS, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BLAIR GA, BYRNE A, CASHMERE RJ, COOPERSARKAR AM, DANIELS D, DEVENISH RCE, HARNEW N, LANCASTER M, LUFFMAN PE, LINDEMANN L, MCFALL J, NATH C, QUADT A, UIJTERWAAL H, WALCZAK R, WILSON FF, YIP T, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, WHITEMORE JJ, DAGOSTINI G, IORI M, MARINI G, MATTIOLI M, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, CARTIGLIA N, DUBBS T, HEUSCH C, VANHOOK M, HUBBARD B, LOCKMAN W, RAHN JT, SADROZINSKI HEW, SEIDEN A, BILTZINGER J, SEIFERT RJ, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, LEVY A, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAGIRA T, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAGAYAMA S, NAKAMITSU Y, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARDO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, CROMBIE MB, GINGRICH DM, HARTNER GF, JOE KK, LEVMAN GM, MARTIN JF, ORR RS, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, KOCHOCKI J, LU B, MO LW, BOGUSZ W, CHARCHULA K, CIBOROWSKI J, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, TYMIENIECKA T, WROBLEWSKI AK, ZAKRZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, GLASMAN C, KARSHON U, REVEL D, SHAPIRA A, ALI I, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, SILVERSTEIN S, SMITH WH, TSURUGAI T, BHADRA S, FRISKEN WR, FURUTANI KM, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Repond, J, Schlereth, J, Stanek, R, Talaga, Rl, Thron, J, Arzarello, F, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Ciralli, F, Contin, A, Dauria, S, Frasconi, F, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Geitz, G, Grothe, M, Hartmann, H, Haun, D, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Mari, Stefano Maria, Mass, A, Mengel, S, Mollen, J, Paul, E, Rembser, C, Schattevoy, R, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Dyce, N, Foster, B, George, S, Gilmore, R, Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cj, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, S, Yoshida, R, Rau, Rr, Ameodo, M, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Eskreys, K, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kedzierski, T, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Bienlein, Jk, Bottcher, S, Coldewey, C, Drews, G, Flasinski, M, Gilkinson, Dj, Gottlicher, P, Gutjahr, B, Haas, T, Hain, W, Hasell, D, Hessling, H, Hultschig, H, Iga, Y, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Kroger, W, Krugers, J, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Manczak, O, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Voss, T, Westphal, D, Wolf, G, Youngman, C, Grabosch, Hj, Leich, A, Meyer, A, Rethfeldt, C, Schlenstedt, S, Barbagli, G, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Qian, S, Votano, L, Bamberger, A, Freidhof, A, Poser, T, Soldnerrembold, S, Schroeder, J, Theisen, G, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Fleck, I, Jamieson, Va, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Kammerlocher, H, Krebs, B, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Furtjes, A, Hagge, L, Lohrmann, E, Mainusch, J, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Terron, J, Zetsche, F, Bacon, Tc, Beuselinck, R, Butterworth, I, Gallo, E, Harris, Vl, Hung, Bh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Zhang, Y, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Delpeso, J, Puga, J, Detroconiz, Jf, Ikraiam, F, Mayer, Jk, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Laurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Acosta, D, Bylsma, B, Durkin, L, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Blair, Ga, Byrne, A, Cashmere, Rj, Coopersarkar, Am, Daniels, D, Devenish, Rce, Harnew, N, Lancaster, M, Luffman, Pe, Lindemann, L, Mcfall, J, Nath, C, Quadt, A, Uijterwaal, H, Walczak, R, Wilson, Ff, Yip, T, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Whitemore, Jj, Dagostini, G, Iori, M, Marini, G, Mattioli, M, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Cartiglia, N, Dubbs, T, Heusch, C, Vanhook, M, Hubbard, B, Lockman, W, Rahn, Jt, Sadrozinski, Hew, Seiden, A, Biltzinger, J, Seifert, Rj, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nagira, T, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nagayama, S, Nakamitsu, Y, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joe, Kk, Levman, Gm, Martin, Jf, Orr, R, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Kochocki, J, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Glasman, C, Karshon, U, Revel, D, Shapira, A, Ali, I, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Tsurugai, T, Bhadra, S, Frisken, Wr, and Furutani, Km
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The gluon momentum density xg(x, Q(2)) of the proton was extracted at Q(2) = 20 GeV2 for small values of x between 4 x 10(-4) and 10(-2) from the scaling violations of the proton structure function F-2 measured recently by ZEUS in deep inelastic neutral current ep scattering at HERA. The extraction was performed in two ways. Firstly, using a global NLO fit to the ZEUS data on F-2 at low x constrained by measurements from NMC at larger x; and secondly using published approximate methods for the solution of the GLAP QCD evolution equations. Consistent results are obtained. A substantial increase of the gluon density is found at small x in comparison with the NMC result obtained at larger values of x.
Published: 1995

45. MEASUREMENT OF ELASTIC P(0) PHOTOPRODUCTION AT HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MIKUNAS D, MUSGRAVE B, REPOND J, STANEK R, TALAGA RL, ZHANG H, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CONTIN A, CORRADI M, GIALAS I, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, BORNHEIM A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, ECKERT M, FELD L, FREY A, GEERTS M, GROTHE M, HARTMANN H, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MENGEL S, MOLLEN J, PAUL E, PFEIFFER M, REMBSER C, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, DYCE N, FOSTER B, GEORGE S, GILMORE R, HEATH GP, HEATH HF, LLEWELLYN TJ, MORGADO CJS, NORMAN DJP, OMARA JA, TAPPER RJ, WILSON SS, YOSHIDA R, PAU RR, ARNEODO M, CAPUA M, GARFAGNINI A, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, CARTIGLIA N, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, ZHU Q, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZAREBSKA E, SUSZYCKI L, ZAJAC J, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BEIER H, BIENLEIN JK, COLDEWEY C, DEPPE O, DESLER K, DREWS G, FLASINSKI M, GILKINSON DJ, GLASMAN C, GOTTLICHER P, GROSSEKNETTER J, GUTJAHR B, HAAS T, HAIN W, HASELL D, HESSLING H, IGA Y, JOHNSON K, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MAINUSCH J, MANCZAK O, MONTEIRO T, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ W, SELONKE F, STILIARIS E, SURROW B, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, ZEUNER W, ZHOU JF, GRABOSCH HJ, KHARCHILAVA A, LEICH A, MATTINGLY MCK, MEYER A, SCHLENSTEDT S, WULFF N, BARBAGLI G, PELFER P, ANZIVINO G, MACCARRONE G, DEPASQUALE S, VOTANO L, BAMBERGER A, EISENHARDT S, FREIDHOF A, SOLDNERREMBOLD S, SCHROEDER J, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, SAXON DH, UTLEY ML, WILSON AS, DANNEMANN A, HOLM U, HORSTMANN D, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, HAGGE L, LOHRMANN E, MILEWSKI J, NAKAHATA M, PAVEL N, POELZ G, SCHOTT W, ZETSCHE F, BACON TC, BRUEMMER N, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG BYH, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, WANG S, WU JT, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEIL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, FERNANDEZ JP, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, MARTINEZ M, DELPESO J, PUGA J, TERRON J, DETROCONIZ JF, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIM JN, MATTHEWS CG, PATEL PM, SINCLAIR LE, STAIRS DG, LAURENT MS, ULLNANN R, ZACEK G, BASHKIROV V, DOLGOSHEIN BA, STIFULKIN A, BASHINDZHAGYAN GL, ERMOLOV PF, GLADILIN LK, GOLUBKOV YA, KOBRIN VD, KORZHAVINA IA, KUZMIN VA, LUKINA OY, PROSKURYAKOV AS, SAVIN AA, SHCHEGLOVA LM, SOLOMIN AN, ZOTOV NP, BOTJE M, CHLEBANA F, DAKE A, ENGELEN J, DEKAMPS M, KOOIJMAN P, KRUSE A, TIECKE H, VERKERKE W, VREESWIJK M, WIGGERS L, DEWOLF E, VANWOUDENBERG R, ACOSTA D, BYLSMA B, DURKIN LS, GILMORE J, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, NYLANDER P, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BYRNE A, CASHMERE RJ, COOPERSARKAR AM, DEVENISH RCE, HARNEW N, LANCASTER M, LINDEMANN L, MCFALL JD, NATH C, NOYES VA, QUADT A, TICKNER JR, UIJTERWAAL H, WALCZAK R, WATERS DS, WILSON FF, YIP T, ABBIENDI G, BERTOLIN A, BRUGNERA R, CARLIN R, DALCORSO F, DEGIORGI M, DOSSELLI U, LIMENTANI S, MORANDIN M, POSOCCO M, STANCO L, STROILI R, VOCI C, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, WHITMORE JJ, DAGOSTINI G, MARINI G, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, DUBBS T, HEUSCH C, VANHOOK M, LOCKMAN W, RAHN JT, SADROZINSKI HFW, SEIDEN A, WILLIAMS DC, BILTZINGER J, SEIFERT RJ, SCHWARZER O, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, LEVY A, FLECK JI, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAKAMITSU Y, YAMAUCHI K, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARDO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, GINGRICH DM, HARTNER GF, JOE KK, LEVMAN GM, MARTIN JF, ORR RS, POLENZ S, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, LU B, MO LW, BOGUSZ W, CHARCHULA K, CIBOROWSKI J, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, SMIENIECKA T, WROBLEWSKI AK, ZAKRZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, KARSHON U, REVEL D, ZERZION D, ALI I, BADGETT WF, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, SILVERSTEIN S, SMITH WH, VAICIULIS A, WODARCZYK M, TSURUGAI T, BHADRA S, CARDY ML, FAGERSTROEM CP, FRISKEN WR, FURUTANI KM, KHAKZAD M, SCHMIDKE WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Bornheim, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Dyce, N, Foster, B, George, S, Gilmore, R, Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cj, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, S, Yoshida, R, Pau, Rr, Arneodo, M, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, K, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mattingly, Mck, Mari, Stefano Maria, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Bruemmer, N, Butterworth, I, Gallo, E, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Laurent, M, Ullnann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifulkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Gilmore, J, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Nylander, P, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Byrne, A, Cashmere, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Fleck, Ji, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Gingrich, Dm, Hartner, Gf, Joe, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Smieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, I, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, and Schmidke, Wb
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: Elastic rho(0) photoproduction has been measured using the ZEUS detector at HERA. Untagged photoproduction events from ep interactions were used to measure the reaction gamma p --> rho(0)P (rho(0) --> pi(+)pi(-)) at photon-proton centre-of-mass energies between 60 and 80 GeV and \t\ < 0.5 GeV2, where t is the square of the four-momentum transferred at the proton vertex. The differential cross section d sigma/dM(pi pi), where M(pi pi) is the invariant mass of the two pions, and the integrated cross section, sigma(gamma p-->rho)o(p), are presented; the latter was measured to be 14.7 +/- 0.4 (stat.) +/- 2.4 (syst.) mu b. The differential cross section d sigma/dt has an approximately exponential shape; a fit of the type A'(t) exp (-b'(t)\t\ + c'(t)t(2)) yields a t-slope b'(t) = 9.9 +/- 1.2 (stat.) +/- 1.4 (syst.) GeV-2. The results, when compared to low energy data, show a weak energy dependence of both sigma(gamma p-->rho)o(P) and of the t-slope. The p(0) is produced predominantly with transverse polarisation, demostrating that s-channel helicity conservation holds at these energies.
Published: 1995

46. MEASUREMENT OF MULTIPLICITY AND MOMENTUM SPECTRA IN THE CURRENT FRAGMENTATION REGION OF THE BREIT FRAME AT HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MIKUNAS D, MUSGRAVE B, REPOND J, STANEK R, TALAGA RL, ZHANG H, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CONTIN A, GIALAS I, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, ECKERT M, FELD L, FREY A, GEERTS M, GEITZ G, GROTHE M, HAAS T, HARTMANN H, HAUN D, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MASS A, MENGEL S, MOLLEN J, PAUL E, REMBSER C, SCHATTEVOY R, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, DYCE N, FOSTER B, GEORGE S, GILMORE R, HEATH GP, HEATH HF, LLEWELLYN TJ, MORGADO CJS, NORMAN DJP, OMARA JA, TAPPER RJ, WILSON SS, YOSHIDA R, RAU RR, ARNEODO M, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, ZHU Q, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, ESKREYS K, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZARESKA E, SUSZYCKI L, ZAJAC J, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BEIER H, BIENLEIN JK, COLDEWEY C, DEPPE O, DESLER K, DREWS G, FLASINSKI M, GILKINSON DJ, GLASMAN C, GOTTLICHER P, GROSSEKNETTER J, GUTJAHR B, HAIN W, HASELL D, HESSLING H, HULTSCHIG H, IGA Y, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MANCZAK O, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ W, SELONKE F, STILIARIS E, SURROW B, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, ZHOU JF, GRABOSCH HJ, KHARCHILAVA A, LEICH A, MATTINGLY M, MEYER A, SCHLENSTEDT S, BARBAGLI G, PELFER P, ANZIVINO G, MACCARRONE G, DEPASQUALE S, VOTANO L, BAMBERGER A, EISENHARDT S, FREIDHOF A, SOLDNERREMBOLD S, SCHROEDER J, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, FLECK I, JAMIESON VA, SAXON DH, UTLEY ML, WILSON AS, DANNEMANN A, HOLM U, HORSTMANN D, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, HAGGE L, LOHRMANN E, MAINUSCH J, MILEWSKI J, NAKAHATA M, PAVEL N, POELZ G, SCHOTT W, ZETSCHE F, BACON TC, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG BYH, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, WANG S, WU JT, ZHANG Y, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEIL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, DELPESO J, PUGA J, TERRON J, DETROCONIZ JF, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIM JN, MATTHEWS CG, PATEL PM, SINCLAIR LE, STAIRS DG, STLAURENT M, ULLMANN R, ZACEK G, BASHKIROV V, DOLGOSHEIN BA, STIFUTKIN A, BASHINDZHAGYAN GL, ERMOLOV PF, GLADILIN LK, GOLUBKOV YA, KOBRIN VD, KUZMIN VA, PROSKURYAKOV AS, SAVIN AA, SHCHEGLOVA LM, SOLOMIN AN, ZOTOV NP, BOTJE M, CHLEBANA F, DAKE A, ENGELEN J, DEKAMPS M, KOOIJMAN P, KRUSE A, TIECKE H, VERKERKE W, VREESWIJK M, WIGGERS L, DEWOLF E, VANWOUDENBERG R, ACOSTA D, BYLSMA B, DURKIN LS, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BLAIR GA, BYRNE A, CASHMORE RJ, COOPERSARKAR AM, DANIELS D, DEVENISH RCE, HARNEW N, LANCASTER M, LUFFMAN PE, LINDEMANN L, MCFALL JD, NATH C, QUADT A, UIJTERWAAL H, WALCZAK R, WILSON FF, YIP T, ABBIENDI G, BERTOLIN A, BRUGNERA R, CARLIN R, DALCORSO F, DEGIORGI M, DOSSELLI U, LIMENTANI S, MORANDIN M, POSOCCO M, STANCO L, STROILI R, VOCI C, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, WHITMORE JJ, DAGOSTINI G, MARINI G, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, CARTIGLIA N, DUBBS T, HEUSCH C, VANHOOK M, HUBBARD B, LOCKMAN W, RAHN JT, SADROZINSKI HFW, SEIDEN A, BILTZINGER J, SEIFERT RJ, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, LEVY A, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAKAMITSU Y, YAMAUCHI K, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARDO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, CROMBIE MB, GINGRICH DM, HARTNER GF, JOO KK, LEVMAN GM, MARTIN JF, ORR RS, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, KOCHOCKI J, LU B, MO LW, BOGUSZ W, CHARCHULA K, CIBOROWSKI J, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, TYMIENIECKA T, WROBLEWSKI AK, ZAKRZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, KARSHON U, REVEL D, ZERZION D, ALI I, BADGETT WF, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, SILVERSTEIN S, SMITH WH, VAICIULIS A, WODARCZYK M, TSURUGAI T, BHADRA S, CARDY ML, FAGERSTROEM CP, FRISKEN WR, FURUTANI KM, KHAKZAD M, SCHMIDKE WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Geitz, G, Grothe, M, Haas, T, Hartmann, H, Haun, D, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Mari, Stefano Maria, Mass, A, Mengel, S, Mollen, J, Paul, E, Rembser, C, Schattevoy, R, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Dyce, N, Foster, B, George, S, Gilmore, R, Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cj, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, S, Yoshida, R, Rau, Rr, Arneodo, M, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Eskreys, K, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazareska, E, Suszycki, L, Zajac, J, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Hain, W, Hasell, D, Hessling, H, Hultschig, H, Iga, Y, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Manczak, O, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mattingly, M, Meyer, A, Schlenstedt, S, Barbagli, G, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Fleck, I, Jamieson, Va, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Mainusch, J, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Butterworth, I, Gallo, E, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Zhang, Y, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Blair, Ga, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Daniels, D, Devenish, Rce, Harnew, N, Lancaster, M, Luffman, Pe, Lindemann, L, Mcfall, Jd, Nath, C, Quadt, A, Uijterwaal, H, Walczak, R, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Cartiglia, N, Dubbs, T, Heusch, C, Vanhook, M, Hubbard, B, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Biltzinger, J, Seifert, Rj, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Kochocki, J, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, I, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, and Schmidke, Wb
Subjects: High Energy Physics::Experiment
Abstract: Charged particle production has been measured in Deep Inelastic Scattering (DIS) events using the ZEUS detector over a large range of Q(2) from 10 to 1280 GeV2 The evolution with Q of the charged multiplicity and scaled momentum has been investigated in the current fragmentation region of the Breit frame. The data are used to study QCD coherence effects in DIS and are compared with corresponding e(+)e(-) data in order to test the universality of quark fragmentation.
Published: 1995

47. MEASUREMENT OF THE PROTON STRUCTURE-FUNCTION F2 FROM THE 1993 HERA DATA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MUSGRAVE B, REPOND J, SCHLERETH J, STANEK R, TALAGA RL, THRON J, ARZARELLO F, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CIRALLI F, CONTIN A, DAURIA S, FRASCONI F, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, FELD L, FREY A, GEERTS M, GEITZ G, GROTHE M, HARTMANN H, HAUN D, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MASS A, MENGEL S, MOLLEN J, PAUL E, REMBSER C, SCHATTEVOY R, SCHNEIDER JL, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, DYCE N, FOSTER B, GEORGE S, GILMORE R, HEATH GP, HEATH HF, LLEWELLYN TJ, MORGADO CJS, NORMAN DJP, OMARA JA, TAPPER RJ, WILSON SS, YOSHIDA R, RAU RR, ARNEODO M, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, GIALAS I, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, ESKREYS K, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZAREBSKA E, SUSZYCKI L, ZAJAC J, KEDZIERSKI T, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BIENLEIN JK, BOTTCHER S, COLDEWEY C, DREWS G, FLASINSKI M, GILKINSON DJ, GOTTLICHER P, GUTJAHR B, HAAS T, HAGGE L, HAIN W, HASELL D, HESSLING H, HULTSCHIG H, IGA Y, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, KROGER W, KRUGER J, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MAINUSCH J, MANCZAK O, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ W, SELONKE F, STILIARIS E, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, GRABOSCH HJ, LEICH A, MEYER A, RETHFELDT C, SCHLENSTEDT S, BARBAGLI G, PELFER P, ANZIVINO G, MACCARRONE G, DEPASQUALE S, QIAN S, VOTANO L, BAMBERGER A, FREIDHOF A, POSER T, SOLDNERREMBOLD S, SCHROEDER J, THEISEN G, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, FLECK I, JAMIESON VA, SAXON DH, UTLEY ML, WILSON AS, DANNEMANN A, HOLM U, HORSTMANN D, KAMMERLOCHER H, KREBS B, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, FURTJES A, LOHRMANN E, MILEWSKI J, NAKAHATA M, PAVEL N, POELZ G, SCHOTT W, TERRON J, ZETSCHE F, BACON TC, BEUSELINCK R, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG BH, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, ZHANG Y, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEIL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, DELPESO J, PUGA J, DETROCONIZ JF, IKRAIAM F, MAYER JK, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIM JN, MATTHEWS CG, MITCHELL JW, PATEL PM, SINCLAIR LE, STAIRS DG, STLAURENT M, ULLMANN R, BASHKIROV V, DOLGOSHEIN BA, STIFUTKIN A, BASHINDZHAGYAN GL, ERMOLOV PF, GLADILIN LK, GOLUBKOV YA, KOBRIN VD, KUZMIN VA, PROSKURYAKOV AS, SAVIN AA, SHCHEGLOVA LM, SOLOMIN AN, ZOTOV NP, BENTVELSEN S, BOTJE M, CHLEBANA F, DAKE A, ENGELEN J, DEJONG P, DEKAMPS M, KOOIJMAN P, KRUSE A, ODELL V, TENNER A, TIECKE H, VERKERKE W, VREESWIJK M, WIGGERS L, DEWOLF E, VANWOUDENBERG R, ACOSTA D, BYLSMA B, DURKIN LS, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BLAIR GA, BYRNE A, CASHMORE RJ, COOPERSARKAR AM, DANIELS D, DEVENISH RCE, HARNEW N, LANCASTER M, LUFFMAN PE, LINDEMANN L, MCFALL J, NATH C, QUADT A, UIJTERWAAL H, WALCZAK R, WILSON FF, YIP T, ABBIENDI G, BERTOLIN A, BRUGNERA R, CARLIN R, DALCORSO F, DEGIORGI M, DOSSELLI U, GASPARINI F, LIMENTANI S, MORANDIN M, POSOCCO M, STANCO L, STROILI R, VOCI C, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, WHITMORE JJ, DAGOSTINI G, IORI M, MARINI G, MATTIOLI M, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, CARTIGLIA N, DUBBS T, HEUSCH C, VANHOOK M, HUBBARD B, LOCKMAN W, RAHN JT, SADROZINSKI HFW, SEIDEN A, BILTZINGER J, SEIFERT RJ, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, LEVY A, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAGIRA T, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAGAYAMA S, NAKAMITSU Y, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARDO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, CROMBIE MB, GINGRICH DM, HARTNER GF, JOO KK, LEVMAN GM, MARTIN JF, ORR RS, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, KOCHOCKI J, LU B, MO LW, BOGUSZ W, CHARCHULA K, CIBOROWSKI J, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, TYMIENIECKA T, WROBLEWSKI AK, ZAKRZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, GLASMAN C, KARSHON U, REVEL D, SHAPIRA A, ALI I, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, SILVERSTEIN S, SMITH WH, TSURUGAI T, BHADRA S, FRISKEN WR, FURUTANI KM, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Repond, J, Schlereth, J, Stanek, R, Talaga, Rl, Thron, J, Arzarello, F, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Ciralli, F, Contin, A, Dauria, S, Frasconi, F, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Feld, L, Frey, A, Geerts, M, Geitz, G, Grothe, M, Hartmann, H, Haun, D, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Mari, Stefano Maria, Mass, A, Mengel, S, Mollen, J, Paul, E, Rembser, C, Schattevoy, R, Schneider, Jl, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Dyce, N, Foster, B, George, S, Gilmore, R, Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cj, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, S, Yoshida, R, Rau, Rr, Arneodo, M, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Gialas, I, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Eskreys, K, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kedzierski, T, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Bienlein, Jk, Bottcher, S, Coldewey, C, Drews, G, Flasinski, M, Gilkinson, Dj, Gottlicher, P, Gutjahr, B, Haas, T, Hagge, L, Hain, W, Hasell, D, Hessling, H, Hultschig, H, Iga, Y, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Kroger, W, Kruger, J, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Voss, T, Westphal, D, Wolf, G, Youngman, C, Grabosch, Hj, Leich, A, Meyer, A, Rethfeldt, C, Schlenstedt, S, Barbagli, G, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Qian, S, Votano, L, Bamberger, A, Freidhof, A, Poser, T, Soldnerrembold, S, Schroeder, J, Theisen, G, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Fleck, I, Jamieson, Va, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Kammerlocher, H, Krebs, B, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Furtjes, A, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Terron, J, Zetsche, F, Bacon, Tc, Beuselinck, R, Butterworth, I, Gallo, E, Harris, Vl, Hung, Bh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Zhang, Y, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Delpeso, J, Puga, J, Detroconiz, Jf, Ikraiam, F, Mayer, Jk, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Mitchell, Jw, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Bentvelsen, S, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dejong, P, Dekamps, M, Kooijman, P, Kruse, A, Odell, V, Tenner, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Blair, Ga, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Daniels, D, Devenish, Rce, Harnew, N, Lancaster, M, Luffman, Pe, Lindemann, L, Mcfall, J, Nath, C, Quadt, A, Uijterwaal, H, Walczak, R, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Gasparini, F, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Iori, M, Marini, G, Mattioli, M, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Cartiglia, N, Dubbs, T, Heusch, C, Vanhook, M, Hubbard, B, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Biltzinger, J, Seifert, Rj, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nagira, T, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nagayama, S, Nakamitsu, Y, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Kochocki, J, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Glasman, C, Karshon, U, Revel, D, Shapira, A, Ali, I, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Tsurugai, T, Bhadra, S, Frisken, Wr, and Furutani, Km
Abstract: The ZEUS detector has been used to measure the proton structure function F-2. During 1993 HERA collided 26.7 GeV electrons on 820 GeV protons. The data sample corresponds to an integrated luminosity of 0.54 pb(-1), representing a twenty fold increase in statistics compared to that of 1992. Results are presented for 7 < Q(2) < 10(4) GeV2 and x values as low as 3 x 10(-4). The rapid rise in F-2 as x decreases observed previously is now studied in greater detail and persists for Q(2) values up to 500 GeV2.
Published: 1995

48. NEUTRAL STRANGE PARTICLE-PRODUCTION IN DEEP-INELASTIC SCATTERING AT HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MIKUNAS D, MUSGRAVE B, REPOND J, STANEK R, TALAGA RL, ZHANG H, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CONTIN A, CORRADI M, GIALAS I, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, ECKERT M, FELD L, FREY A, GEERTS M, GEITZ G, GROTHE M, HAAS T, HARTMANN H, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MASS A, MENGEL S, MOLLEN J, PAUL E, REMBSER C, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, DYCE N, FOSTER B, GEORGE S, GILMORE R, HEATH GP, HEATH HF, LLEWELLYN TJ, MORGADO CIS, NORMAN DJP, OMARA JA, TAPPER RJ, WILSON SS, YOSHIDA R, RAU RR, ARNEODO M, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, CARTIGLIA N, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, ZHU Q, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZAREBSKA E, SUSZYCKI L, ZAJAC J, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BEIER H, BIENLEIN JK, COLDEWEY C, DEPPE O, DESLER K, DREWS G, FLASINSKI M, GILKINSON DJ, GLASMAN C, GOTTLICHER P, GROSSEKNETTER J, GUTJAHR B, HAIN W, HASELL D, HESSLING H, IGA Y, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MAINUSCH J, MANCZAK O, MONTEIRO T, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ W, SELONKE F, STILIARIS E, SURROW B, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, ZHOU JF, GRABOSCH HJ, KHARCHILAVA A, LEICH A, MATTINGLY MCK, MEYER A, SCHLENSTEDT S, WULFF N, BARBAGLI G, PELFER P, ANZIVINO G, MACCARRONE G, DEPASQUALE S, VOTANO L, BAMBERGER A, EISENHARDT S, FREIDHOF A, SOLDNERREMBOLD S, SCHROEDER J, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, FLECK JI, SAXON DH, UTLEY ML, WILSON AS, DANNEMANN A, HOLM U, HORSTMANN D, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, HAGGE L, LOHRMANN E, MILEWSKI J, NAKAHATA M, PAVEL N, POELZ G, SCHOTT W, ZETSCHE F, BACON TC, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG BYH, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, WANG S, WU JT, ZHANG Y, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEIL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, FERNANDEZ JP, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, MARTINEZ M, DELPESO J, PUGA J, TERRON J, DETROCONIZ JF, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIM JN, MATTHEWS CG, PATEL PM, SINCLAIR LE, STAIRS DG, STLAURENT M, ULLMANN R, ZACEK G, BASHKIROV V, DOLGOSHEIN BA, STIFUTKIN A, BASHINDZHAGYAN GL, ERMOLOV PF, GLADILIN LK, GOLUBKOV YA, KOBRIN VD, KUZMIN VA, PROSKURYAKOV AS, SAVIN AA, SHCHEGLOVA LM, SOLOMIN AN, ZOTOV NP, BOTJE M, CHLEBANA F, DAKE A, ENGELEN J, DEKAMPS M, KOOIJMAN P, KRUSE A, TIECKE H, VERKERKE W, VREESWIJK M, WIGGERS L, DEWOLF E, VANWOUDENBERG R, ACOSTA D, BYLSMA B, DURKIN LS, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BYRNE A, CASHMORE RJ, COOPERSARKAR AM, DEVENISH RCE, HARNEW N, LANCASTER M, LINDEMANN L, MCFALL JD, NATH C, NOYES VA, QUADT A, TICKNER JR, UIJTERWAAL H, WALCZAK R, WATERS DS, WILSON FF, YIP T, ABBIENDI G, BERTOLIN A, BRUGNERA R, CARLIN R, DALCORSO F, DEGIORGI M, DOSSELLI U, LIMENTANI S, MORANDIN M, POSOCCO M, STANCO L, STROILI R, VOCI C, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, WHITMORE JJ, DAGOSTINI G, MARINI G, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, DUBBS T, HEUSCH C, VANHOOK M, HUBBARD B, LOCKMAN W, RAHN JT, SADROZINSKI HFW, SEIDEN A, BILTZINGER J, SEIFERT RJ, SCHWARZER O, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, LEVY A, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAKAMITSU Y, YAMAUCHI K, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARDO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, CROMBIE MB, GINGRICH DM, HARTNER GF, JOO KK, LEVMAN GM, MARTIN JF, ORR RS, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, LU B, MO LW, BOGUSZ W, CHARCHULA K, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, TYMIENIECKA T, WROBLEWSKI AK, ZAKIZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, KARSHON U, REVEL D, ZERZION D, ALI I, BADGETT WF, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, SILVERTSEIN S, SMITH WH, VAICIULIS A, WODARCZYK M, TSURUGAI T, BHADRA S, CARDY ML, FAGERSTROEM CP, FRISKEN WR, FURUTANI KM, KHAKZAD M, SCHMIDKE WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Pollini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Geitz, G, Grothe, M, Haas, T, Hartmann, H, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Mari, Stefano Maria, Mass, A, Mengel, S, Mollen, J, Paul, E, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Dyce, N, Foster, B, George, S, Gilmore, R, Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Ci, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, S, Yoshida, R, Rau, Rr, Arneodo, M, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Hain, W, Hasell, D, Hessling, H, Iga, Y, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mattingly, Mck, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Fleck, Ji, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Butterworth, I, Gallo, E, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Zhang, Y, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Hubbard, B, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakizewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, I, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silvertsein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, and Schmidke, Wb
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: This paper presents measurements of K-0 and Lambda production in neutral current, deep inelastic scattering of 26.7 GeV electrons and 820 GeV protons in the kinematic range 10 < Q(2) < 640 GeV2, 0.0003 < x < 0.01, and y > 0.04. Average multiplicities for K-0 and Lambda production are determined for transverse momenta p(T) > 0.5 GeV and pseudorapidities \eta\ < 1.3. The multiplicities favour a stronger strange to light quark suppression in the fragmentation chain than found in e(+)e(-) experiments. The production properties of K-0's in events with and without a large rapidity gap with respect to the proton direction are compared. The ratio of neutral K-0's to charged particles per event in the measured kinematic range is, within the present statistics, the same in both samples.
Published: 1995

49. DIFFRACTIVE HARD PHOTOPRODUCTION AT HERA AND EVIDENCE FOR THE GLUON CONTENT OF THE POMERON RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MIKUNAS D, MUSGRAVE B, REPOND J, STANEK R, TALAGA RL, ZHANG H, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CONTIN A, CORRADI M, GIALAS I, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, ECKERT M, FELD L, FREY A, GEERTS M, GROTHE M, HARTMANN H, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MENGEL S, MOLLEN J, PAUL E, PFEIFFER M, REMBSER C, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, DYCE N, FOSTER B, GEORGE S, GILMORE R, HEATH GP, HEATH HF, LLEWELLYN TJ, MORGADO CJS, NORMAN DJP, OMARA JA, TAPPER R, WILSON SS, YOSHIDA R, RAU RR, ARNEODO M, CAPUA M, GARFAGNINI A, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, CARTIGLIA N, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, ZHU Q, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZAREBSKA E, SUSZYCKI L, ZAJAC J, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BEIER H, BIENLEIN JK, COLDEWEY C, DEPPE O, DESLER K, DREWS G, FLASINSKI M, GILKINSON DJ, GLASMAN C, GOTTLICHER P, GROSSEKNETTER J, GUTJAHR B, HAAS T, HAIN W, HASELL D, HESSLING H, IGA Y, JOHNSON K, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MAINUSCH J, MANCZAK O, MONTEIRO T, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ D, SCHULZ W, SELONKE F, STILIARIS E, SURROW B, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, ZEUNER W, ZHOU JF, GRABOSCH HJ, KHARCHILAVA A, LEICH A, MATTINGLY MCK, MEYER A, SCHLENSTEDT S, WULFF N, BARBAGLI G, PELFER P, ANZIVINO G, MACCARRONE G, DEPASQUALE S, VOTANO L, BAMBERGER A, EISENHARDT S, FREIDHOF A, SOLDNERREMBOLD S, SCHROEDER J, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, FLECK JI, SAXON DH, UTLEY ML, WILSON AS, DANNEMANN A, HOLM U, HORSTMANN D, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, HAGGE L, LOHRMANN E, MILEWSKI J, NAKAHATA M, PAVEL N, POELZ G, SCHOTT W, ZETSCHE F, BACON TC, BRUEMMER N, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG VL, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, WANG S, WU JT, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEILL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, FERNANDEZ JP, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, MARTINEZ M, DELPESO J, PUGA J, TERRON J, DETROCONIZ JF, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIM JN, MATTHEWS CG, PATEL PM, SINCLAIR LE, STAIRS DG, LAURENT MS, ULLMANN R, ZACEK G, BASHKIROV V, DOLGOSHEIN BA, STIFUTKIN A, BASHINDZHAGYAN GL, ERMOLOV PF, GLADILIN LK, GOLUBKOV YA, KOBRIN VD, KORZHAVINA IA, KUZMIN VA, LUKINA OY, PROSKURYAKOV AS, SAVIN AA, SHCHEGLOVA LM, SOLOMIN AN, ZOTOV NP, BOTJE M, CHLEBANA F, DAKE A, ENGELEN J, DEKAMPS M, KOOIJMAN P, KRUSE A, TIECKE H, VERKERKE W, VREESWIJK M, WIGGERS L, DEWOLF E, VANWOUDENBERG R, ACOSTA D, BYLSMA B, DURKIN LS, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BYRNE A, CASHMORE RJ, COOPERSARKAR AM, DEVENISH RCE, HARNEW N, LANCASTER M, LINDEMANN L, MCFALL JD, NATH C, NOYES VA, QUADT A, TICKNER JR, UIJTERWAAL H, WALCZAK R, WATERS DS, WILSON FF, YIP T, ABBIENDI G, BERTOLIN A, BRUGNERA R, CARLIN R, DALCORSO F, DEGIORGI M, DOSSELLI U, LIMENTANI S, MORANDIN M, POSOCCO M, STANCO L, STROILI R, VOCI C, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, WHITMORE JJ, DAGOSTINI G, MARINI G, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, DUBBS T, HEUSCH C, VANHOOK M, LOCKMAN W, RAHN JT, SADROZINSKI HFW, SEIDEN A, WILLIAMS DC, BILTZINGER J, SEIFERT RJ, SCHWARZER O, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, LEVY A, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAKAMITSU Y, YAMAUCHI K, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARBO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, CROMBIE MB, GINGRICH DM, HARTNER GF, JOO KK, LEVMAN GM, MARTIN JF, ORR RS, POLENZ S, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, LU B, MO LW, BOGUSZ W, CHARCHULA K, CIBOROWSKI J, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, TYMIENIECKA T, WROBLEWSKI AK, ZAKRZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, KARSHON U, REVEL D, ZERZION D, ALI I, BADGETT WF, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, SILVERSTEIN S, SMITH WH, VAICIULIS A, WODARCZYK M, TSURUGAI T, BHADRA S, CARDY ML, FAGERSTROEM CP, FRISKEN WR, FURUTANI KM, KHAKZAD M, SCHMIDKE WB, MARI, Stefano Maria, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Mari, Stefano Maria, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Dyce, N, Foster, B, George, S, Gilmore, R, Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cj, Norman, Djp, Omara, Ja, Tapper, R, Wilson, S, Yoshida, R, Rau, Rr, Arneodo, M, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, K, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Monteiro, T, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, D, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mattingly, Mck, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Fleck, Ji, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Bruemmer, N, Butterworth, I, Gallo, E, Harris, Vl, Hung, Vl, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneill, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Laurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, A, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, D, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Levy, A, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Darbo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, R, Polenz, S, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, I, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, and Schmidke, Wb
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Inclusive jet cross sections for events with a large rapidity gap with respect to the proton direction from the reaction ep --> jet + X with quasi-real photons have been measured with the ZEUS detector. The cross sections refer to jets with transverse energies E(T)(jet) > 8 GeV, The data show the characteristics of a diffractive process mediated by pomeron exchange. Assuming that the events are due to the exchange of a pomeron with partonic structure, the quark and gluon content of the pomeron is probed at a scale similar to (E(T)(jet))(2). A comparison of the measurements with model predictions based on QCD plus Regge phenomenology requires a contribution of partons with a hard momentum density in the pomeron. A combined analysis of the jet cross sections and recent ZEUS measurements of the diffractive structure function in deep inelastic scattering gives the first experimental evidence for the gluon content of the pomeron in diffractive hard scattering processes. The data indicate that between 30% and 80% of the momentum of the pomeron carried by partons is due to hard gluons.
Published: 1995

50. INCLUSIVE JET DIFFERENTIAL CROSS-SECTIONS IN PHOTOPRODUCTION AT HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008

Author: DERRICK M, KRAKAUER D, MAGILL S, MUSGRAVE B, REPOND J, SCHLERETH J, STANEK R, TALAGA RL, THRON J, ARZARELLO F, AYAD R, BARI G, BASILE M, BELLAGAMBA L, BOSCHERINI D, BRUNI A, BRUNI G, BRUNI P, ROMEO GC, CASTELLINI G, CHIARINI M, CIFARELLI L, CINDOLO F, CIRALLI F, CONTIN A, DAURIA S, FRASCONI F, GIALAS I, GIUSTI P, IACOBUCCI G, LAURENTI G, LEVI G, MARGOTTI A, MASSAM T, NANIA R, NEMOZ C, PALMONARI F, POLINI A, SARTORELLI G, TIMELLINI R, GARCIA YZ, ZICHICHI A, BARGENDE A, CRITTENDEN J, DESCH K, DIEKMANN B, DOEKER T, ECKART M, FELD L, FREY A, GEERTS M, GEITZ G, GROTHE M, HARTMANN H, HAUN D, HEINLOTH K, HILGER E, JAKOB HP, KATZ UF, MASS A, MENGEL S, MOLLEN J, PAUL E, REMBSER C, SCHATTEVOY R, SCHNEIDER JL, SCHRAMM D, STAMM J, WEDEMEYER R, CAMPBELLROBSON S, CASSIDY A, DYCE N, FOSTER B, GEORGE S, GILMORE R, HEATH GP, HEATH HF, LLEWELLYN TJ, MORGADO CJS, NORMAN DJP, OMARA JA, TAPPER RJ, WILSON SS, YOSHIDA R, RAU RR, ARNEODO M, IANNOTTI L, SCHIOPPA M, SUSINNO G, BERNSTEIN A, CALDWELL A, PARSONS JA, RITZ S, SCIULLI F, STRAUB PB, WAI L, YANG S, BORZEMSKI P, CHWASTOWSKI J, ESKREYS A, PIOTRZKOWSKI K, ZACHARA M, ZAWIEJSKI L, ADAMCZYK L, BEDNAREK B, ESKREYS K, JELEN K, KISIELEWSKA D, KOWALSKI T, RULIKOWSKAZAREBSKA E, SUSZYCKI L, ZAJAC J, KEDZIERSKI T, KOTANSKI A, PRZYBYCIEN M, BAUERDICK LAT, BEHRENS U, BIENLEIN JK, BOTTCHER S, COLDEWEY C, DREWS G, FLASINSKI M, GILKINSON DJ, GOTTLICHER P, GUTJAHR B, HAAS T, HAIN W, HASELL D, HESSLING H, HULTSCHIG H, IGA Y, JOOS P, KASEMANN M, KLANNER R, KOCH W, KOPKE L, KOTZ U, KOWALSKI H, KROGER W, KRUGER J, LABS J, LADAGE A, LOHR B, LOWE M, LUKE D, MANCZAK O, NG JST, NICKEL S, NOTZ D, OHRENBERG K, ROCO M, ROHDE M, ROLDAN J, SCHNEEKLOTH U, SCHULZ W, SELONKE F, STILIARIS E, VOSS T, WESTPHAL D, WOLF G, YOUNGMAN C, GRABOSCH HJ, LEICH A, MEYER A, RETHFELDT C, SCHLENSTEDT S, BARBAGLI G, PELFER P, ANZIVINO G, MACCARRONE G, DEPASQUALE S, QIAN S, VOTANO L, BAMBERGER A, FREIDHOF A, POSER T, SOLDNERREMBOLD S, SCHROEDER J, THEISEN G, TREFZGER T, BROOK NH, BUSSEY PJ, DOYLE AT, FLECK I, JAMIESON VA, SAXON DH, UTLEY ML, WILSON AS, DANNEMANN A, HOLM U, HORSTMANN D, KAMMERLOCHER H, KREBS B, NEUMANN T, SINKUS R, WICK K, BADURA E, BUROW BD, FURTJES A, HAGGE L, LOHRMANN E, MAINUSCH J, MILEWSKI J, NAKAHATA M, PAVEL N, POELZ G, SCHOTT W, TERRON J, ZETSCHE F, BACON TC, BEUSELINCK R, BUTTERWORTH I, GALLO E, HARRIS VL, HUNG BH, LONG KR, MILLER DB, MORAWITZ PPO, PRINIAS A, SEDGBEER JK, WHITFIELD AF, MALLIK U, MCCLIMENT E, WANG MZ, WANG S, WU JT, ZHANG Y, CLOTH P, FILGES D, AN SH, HONG S, NAM SW, PARK SK, SUH MH, YON SH, IMLAY R, KARTIK S, KIM HJ, MCNEIL RR, METCALF W, NADENDLA VK, BARREIRO F, CASES G, GRACIANI R, HERNANDEZ JM, HERVAS L, LABARGA L, DELPESO J, PUGA J, DETROCONIZ JF, IKRAIAM F, MAYER JK, SMITH GR, CORRIVEAU F, HANNA DS, HARTMANN J, HUNG LW, LIM JN, MATTHEWS CG, PATEL PM, SINCLAIR LE, STAIRS DG, STLAURENT M, ULLMANN R, ZACEK G, BASHKIROV V, DOLGOSHEIN BA, STIFUTKIN A, BASHINDZHAGYAN GL, ERMOLOV PE, GLADILIN LK, GOLUBKOV YA, KOBRIN VD, KUZMIN VA, PROSKURYAKOV AS, SAVIN AA, SHCHEGLOVA LM, SOLOMIN AN, ZOTOV NP, BENTVELSEN S, BOTJE M, CHLEBANA E, DAKE A, ENGELEN J, DEJONG P, DEKAMPS M, KOOIJMAN P, KRUSE A, ODELL V, TENNER A, TIECKE H, VERKERKE W, VREESWIJK M, WIGGERS L, DEWOLF E, VANWOUDENBERG R, ACOSTA D, BYLSMA B, DURKIN LS, HONSCHEID K, LI C, LING TY, MCLEAN KW, MURRAY WN, PARK IH, ROMANOWSKI TA, SEIDLEIN R, BAILEY DS, BLAIR GA, BYRNE A, CASHMORE RJ, COOPERSARKAR AM, DANIELS D, DEVENISH RCE, HARNEW N, LANCASTER M, LUFFMAN PE, LINDEMANN L, MCFALL J, NATH C, QUADT A, UIJTERWAAL H, WALCZAK R, WILSON FF, YIP T, ABBIENDI G, BERTOLIN A, BRUGNERA R, CARLIN R, DALCORSO F, DEGIORGI M, DOSSELLI U, LIMENTANI S, MORANDIN M, POSOCCO M, STANCO L, STROILI R, VOCI C, BULMAHN J, BUTTERWORTH JM, FEILD RG, OH BY, WHITMORE JJ, DAGOSTINI G, IORI M, MARINI G, MATTIOLI M, NIGRO A, TASSI E, HART JC, MCCUBBIN NA, PRYTZ K, SHAH TP, SHORT TL, BARBERIS E, CARTIGLIA N, DUBBS T, HEUSCH C, VANHOOK M, HUBBARD B, LOCKMAN W, RAHN JT, SADROZINSKI HFW, SEIDEN A, BILTZINGER J, SEIFERT RJ, WALENTA AH, ZECH G, ABRAMOWICZ H, BRISKIN G, DAGAN S, LEVY A, HASEGAWA T, HAZUMI M, ISHII T, KUZE M, MINE S, NAGASAWA Y, NAGIRA T, NAKAO M, SUZUKI I, TOKUSHUKU K, YAMADA S, YAMAZAKI Y, CHIBA M, HAMATSU R, HIROSE T, HOMMA K, KITAMURA S, NAGAYAMA S, NAKAMITSU Y, CIRIO R, COSTA M, FERRERO MI, LAMBERTI L, MASELLI S, PERONI C, SACCHI R, SOLANO A, STAIANO A, DARDO M, BAILEY DC, BANDYOPADHYAY D, BENARD F, BRKIC M, CROMBIE MB, GINGRICH DM, HARTNER GF, JOO KK, LEVMAN GM, MARTIN JF, ORR RS, SAMPSON CR, TEUSCHER RJ, CATTERALL CD, JONES TW, KAZIEWICZ PB, LANE JB, SAUNDERS RL, SHULMAN J, BLANKENSHIP K, KOCHOCKI J, LU B, MO LW, BOGUSZ W, CHARCHULA K, CIBOROWSKI J, GAJEWSKI J, GRZELAK G, KASPRZAK M, KRZYZANOWSKI M, MUCHOROWSKI K, NOWAK RJ, PAWLAK JM, TYMIENIECKA T, WROBLEWSKI AK, ZAKRZEWSKI JA, ZARNECKI AF, ADAMUS M, EISENBERG Y, GLASMAN C, KARSHON U, REVEL D, SHAPIRA A, ALI I, BEHRENS B, DASU S, FORDHAM C, FOUDAS C, GOUSSIOU A, LOVELESS RJ, REEDER DD, 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Westphal, D, Wolf, G, Youngman, C, Grabosch, Hj, Leich, A, Meyer, A, Rethfeldt, C, Schlenstedt, S, Barbagli, G, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Qian, S, Votano, L, Bamberger, A, Freidhof, A, Poser, T, Soldnerrembold, S, Schroeder, J, Theisen, G, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Fleck, I, Jamieson, Va, Saxon, Dh, Utley, Ml, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Kammerlocher, H, Krebs, B, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Furtjes, A, Hagge, L, Lohrmann, E, Mainusch, J, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Terron, J, Zetsche, F, Bacon, Tc, Beuselinck, R, Butterworth, I, Gallo, E, Harris, Vl, Hung, Bh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, S, Wu, Jt, Zhang, Y, Cloth, P, Filges, D, An, Sh, Hong, S, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, 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Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Inclusive jet differential cross sections for the reaction ep --> jet + X at Q(2) below 4 GeV2 have been measured with the ZEUS detector at HERA using an integrated luminosity of 0.55 pb(-1). These cross sections are given in the kinematic region 0.2 < y < 0.85, for jet pseudorapidities in the ep-laboratory range -1 < eta(jet) < 2 and refer to jets at the hadron level with a cone radius of one unit in the eta - phi plane. These results correspond to quasi-real photoproduction at centre-of-mass energies in the range 130-270 GeV and, approximately, for jet pseudorapidities in the interval -3 < eta(jet)(gamma p CMS) < 0. These measurements cover a new kinematic regime of the partonic structure of the photon, at typical scales up to similar to 300 GeV2 and photon fractional momenta down to x(y) similar to 10(-2). Leading logarithm parton shower Monte Carlo calculations, which include both resolved and direct processes and use the predictions of currently available parametrisations of the photon parton distributions, describe in general the shape and magnitude of the measured eta(jet) and E(T)(jet) distributions.
Published: 1995

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