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1. Measurement of jet production in deep inelastic scattering and NNLO determination of the strong coupling at ZEUS

Author: I. Abt, R. Aggarwal, V. Aushev, O. Behnke, A. Bertolin, I. Bloch, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, P. J. Bussey, A. Caldwell, C. D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A. M. Cooper-Sarkar, M. Corradi, R. K. Dementiev, S. Dusini, J. Ferrando, B. Foster, E. Gallo, D. Gangadharan, A. Garfagnini, A. Geiser, G. Grzelak, C. Gwenlan, D. Hochman, N. Z. Jomhari, I. Kadenko, U. Karshon, P. Kaur, R. Klanner, U. Klein, I. A. Korzhavina, N. Kovalchuk, M. Kuze, B. B. Levchenko, A. Levy, B. Löhr, E. Lohrmann, A. Longhin, F. Lorkowski, E. Lunghi, I. Makarenko, J. Malka, S. Masciocchi, K. Nagano, J. D. Nam, Yu. Onishchuk, E. Paul, I. Pidhurskyi, A. Polini, M. Przybycień, A. Quintero, M. Ruspa, U. Schneekloth, T. Schörner-Sadenius, I. Selyuzhenkov, M. Shchedrolosiev, L. M. Shcheglova, N. Sherrill, I. O. Skillicorn, W. Słomiński, A. Solano, L. Stanco, N. Stefaniuk, B. Surrow, K. Tokushuku, O. Turkot, T. Tymieniecka, A. Verbytskyi, W. A. T. Wan Abdullah, K. Wichmann, M. Wing, S. Yamada, Y. Yamazaki, A. F. Żarnecki, O. Zenaiev, and ZEUS Collaboration
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract A new measurement of inclusive-jet cross sections in the Breit frame in neutral current deep inelastic scattering using the ZEUS detector at the HERA collider is presented. The data were taken in the years 2004–2007 at a centre-of-mass energy of $$318\,\,\textrm{GeV}$$ 318 GeV and correspond to an integrated luminosity of $$347\,\,\textrm{pb}^{-1}$$ 347 pb - 1 . The jets were reconstructed using the $$k_t$$ k t -algorithm in the Breit reference frame. They have been measured as a function of the squared momentum transfer, $$Q^2$$ Q 2 , and the transverse momentum of the jets in the Breit frame, $$p_{\perp ,\text {Breit}}$$ p ⊥ , Breit . The measured jet cross sections are compared to previous measurements and to perturbative QCD predictions. The measurement has been used in a next-to-next-to-leading-order QCD analysis to perform a simultaneous determination of parton distribution functions of the proton and the strong coupling, resulting in a value of $$\alpha _s(M_Z^2) = 0.1142 \pm 0.0017 \text {~(experimental/fit)}$$ α s ( M Z 2 ) = 0.1142 ± 0.0017 (experimental/fit) $${}_{-0.0007}^{+0.0006} \text {~(model/parameterisation)}$$ - 0.0007 + 0.0006 (model/parameterisation) $${}_{-0.0004}^{+0.0006} \text {~(scale)}$$ - 0.0004 + 0.0006 (scale) , whose accuracy is improved compared to similar measurements. In addition, the running of the strong coupling is demonstrated using data obtained at different scales.
Published: 2023
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2. Measurement of the cross-section ratio σ ψ(2S) /σ J/ψ(1S) in exclusive photoproduction at HERA

Author: The ZEUS collaboration, I. Abt, M. Adamus, R. Aggarwal, V. Aushev, O. Behnke, A. Bertolin, I. Bloch, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, P. J. Bussey, A. Caldwell, C. D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A. M. Cooper-Sarkar, M. Corradi, R. K. Dementiev, S. Dusini, J. Ferrando, B. Foster, E. Gallo, D. Gangadharan, A. Garfagnini, A. Geiser, G. Grzelak, C. Gwenlan, D. Hochman, N. Z. Jomhari, I. Kadenko, U. Karshon, P. Kaur, R. Klanner, U. Klein, I. A. Korzhavina, N. Kovalchuk, M. Kuze, B. B. Levchenko, A. Levy, B. Löhr, E. Lohrmann, A. Longhin, F. Lorkowski, I. Makarenko, J. Malka, S. Masciocchi, K. Nagano, J. D. Nam, Yu. Onishchuk, E. Paul, I. Pidhurskyi, A. Polini, M. Przybycień, A. Quintero, I. Rubinsky, M. Ruspa, U. Schneekloth, T. Schörner-Sadenius, I. Selyuzhenkov, M. Shchedrolosiev, L. M. Shcheglova, I. O. Skillicorn, W. Słomiński, A. Solano, L. Stanco, N. Stefaniuk, B. Surrow, K. Tokushuku, J. Tomaszewska, A. Trofymov, O. Turkot, T. Tymieniecka, A. Verbytskyi, W. A. T. Wan Abdullah, K. Wichmann, M. Wing, S. Yamada, Y. Yamazaki, A. F. Żarnecki, and O. Zenaiev
Subjects: Diffraction, Heavy Quark Production, Lepton-Nucleon Scattering, Quarkonium, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The exclusive photoproduction reactions γp → J/ψ(1S)p and γp → ψ(2S)p have been measured at an ep centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb −1. The measurement was made in the kinematic range 30 < W < 180 GeV, Q 2 < 1 GeV2 and |t| < 1 GeV2, where W is the photon-proton centre-of-mass energy, Q 2 is the photon virtuality and t is the squared four-momentum transfer at the proton vertex. The decay channels used were J/ψ(1S) → μ + μ − , ψ(2S) → μ + μ − and ψ(2S) → J/ψ(1S)π + π − with subsequent decay J/ψ(1S) → μ + μ − . The ratio of the production cross sections, R = σ ψ(2S) /σ J/ψ(1S), has been measured as a function of W and |t| and compared to previous data in photoproduction and deep inelastic scattering and with predictions of QCD-inspired models of exclusive vector-meson production, which are in reasonable agreement with the data.
Published: 2022
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3. Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions

Author: I. Abt, R. Aggarwal, V. Andreev, M. Arratia, V. Aushev, A. Baghdasaryan, A. Baty, K. Begzsuren, O. Behnke, A. Belousov, A. Bertolin, I. Bloch, V. Boudry, G. Brandt, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, A. Buniatyan, P. J. Bussey, L. Bystritskaya, A. Caldwell, A. J. Campbell, K. B. Cantun Avila, C. D. Catterall, K. Cerny, V. Chekelian, Z. Chen, J. Chwastowski, J. Ciborowski, R. Ciesielski, J. G. Contreras, A. M. Cooper-Sarkar, M. Corradi, L. Cunqueiro Mendez, J. Currie, J. Cvach, J. B. Dainton, K. Daum, R. K. Dementiev, A. Deshpande, C. Diaconu, S. Dusini, G. Eckerlin, S. Egli, E. Elsen, L. Favart, A. Fedotov, J. Feltesse, J. Ferrando, M. Fleischer, A. Fomenko, B. Foster, C. Gal, E. Gallo, D. Gangadharan, A. Garfagnini, J. Gayler, A. Gehrmann-De Ridder, T. Gehrmann, A. Geiser, L. K. Gladilin, E. W. N. Glover, L. Goerlich, N. Gogitidze, Yu. A. Golubkov, M. Gouzevitch, C. Grab, T. Greenshaw, G. Grindhammer, G. Grzelak, C. Gwenlan, D. Haidt, R. C. W. Henderson, J. Hladký, D. Hochman, D. Hoffmann, R. Horisberger, T. Hreus, F. Huber, A. Huss, P. M. Jacobs, M. Jacquet, T. Janssen, N. Z. Jomhari, A. W. Jung, H. Jung, I. Kadenko, M. Kapichine, U. Karshon, J. Katzy, P. Kaur, C. Kiesling, R. Klanner, M. Klein, U. Klein, C. Kleinwort, H. T. Klest, R. Kogler, I. A. Korzhavina, P. Kostka, N. Kovalchuk, J. Kretzschmar, D. Krücker, K. Krüger, M. Kuze, M. P. J. Landon, W. Lange, P. Laycock, S. H. Lee, B. B. Levchenko, S. Levonian, A. Levy, W. Li, J. Lin, K. Lipka, B. List, J. List, B. Lobodzinski, B. Löhr, E. Lohrmann, O. R. Long, A. Longhin, F. Lorkowski, O. Yu. Lukina, I. Makarenko, E. Malinovski, J. Malka, H.-U. Martyn, S. Masciocchi, S. J. Maxfield, A. Mehta, A. B. Meyer, J. Meyer, S. Mikocki, V. M. Mikuni, M. M. Mondal, T. Morgan, A. Morozov, K. Müller, B. Nachman, K. Nagano, J. D. Nam, Th. Naumann, P. R. Newman, C. Niebuhr, J. Niehues, G. Nowak, J. E. Olsson, Yu. Onishchuk, D. Ozerov, S. Park, C. Pascaud, G. D. Patel, E. Paul, E. Perez, A. Petrukhin, I. Picuric, I. Pidhurskyi, J. Pires, D. Pitzl, R. Polifka, A. Polini, S. Preins, M. Przybycień, A. Quintero, K. Rabbertz, V. Radescu, N. Raicevic, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, M. Rotaru, M. Ruspa, D. P. C. Sankey, M. Sauter, E. Sauvan, S. Schmitt, B. A. Schmookler, U. Schneekloth, L. Schoeffel, A. Schöning, T. Schörner-Sadenius, F. Sefkow, I. Selyuzhenkov, M. Shchedrolosiev, L. M. Shcheglova, S. Shushkevich, I. O. Skillicorn, W. Słomiński, A. Solano, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, L. Stanco, M. Steder, N. Stefaniuk, B. Stella, U. Straumann, C. Sun, B. Surrow, M. R. Sutton, T. Sykora, P. D. Thompson, K. Tokushuku, D. Traynor, B. Tseepeldorj, Z. Tu, O. Turkot, T. Tymieniecka, A. Valkárová, C. Vallée, P. Van Mechelen, A. Verbytskyi, W. A. T. Wan Abdullah, D. Wegener, K. Wichmann, M. Wing, E. Wünsch, S. Yamada, Y. Yamazaki, J. Žáček, A. F. Żarnecki, O. Zenaiev, J. Zhang, Z. Zhang, R. Žlebčík, H. Zohrabyan, F. Zomer, and (H1 and ZEUS collaborations)
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic ep scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of $$\alpha _s(M_Z^2)$$ α s ( M Z 2 ) and the PDFs, was performed with the result $$\alpha _s(M_Z^2)= 0.1156 \pm 0.0011~\mathrm{(exp)}~ ^{+0.0001}_{-0.0002}~ \mathrm{(model}$$ α s ( M Z 2 ) = 0.1156 ± 0.0011 ( exp ) - 0.0002 + 0.0001 ( model $$\mathrm{+ parameterisation)}~ \pm 0.0029~\mathrm{(scale)}$$ + parameterisation ) ± 0.0029 ( scale ) . The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of $$\alpha _s(M_Z^2)$$ α s ( M Z 2 ) , $$\alpha _s(M_Z^2)=0.1155$$ α s ( M Z 2 ) = 0.1155 and 0.118, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input.
Published: 2022
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4. Azimuthal correlations in photoproduction and deep inelastic ep scattering at HERA

Author: The ZEUS collaboration, I. Abt, R. Aggarwal, V. Aushev, O. Behnke, A. Bertolin, I. Bloch, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, P. J. Bussey, A. Caldwell, C. D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A. M. Cooper-Sarkar, M. Corradi, R. K. Dementiev, S. Dusini, J. Ferrando, S. Floerchinger, B. Foster, E. Gallo, D. Gangadharan, A. Garfagnini, A. Geiser, L. K. Gladilin, Yu. A. Golubkov, G. Grzelak, C. Gwenlan, D. Hochman, N. Z. Jomhari, I. Kadenko, U. Karshon, P. Kaur, R. Klanner, U. Klein, I. A. Korzhavina, N. Kovalchuk, M. Kuze, B. B. Levchenko, A. Levy, B. Löhr, E. Lohrmann, A. Longhin, F. Lorkowski, O. Yu. Lukina, I. Makarenko, J. Malka, S. Masciocchi, K. Nagano, J. D. Nam, J. Onderwaater, Yu. Onishchuk, E. Paul, I. Pidhurskyi, A. Polini, M. Przybycień, A. Quintero, M. Ruspa, U. Schneekloth, T. Schörner-Sadenius, I. Selyuzhenkov, M. Shchedrolosiev, L. M. Shcheglova, I. O. Skillicorn, W. Słomiński, A. Solano, L. Stanco, N. Stefaniuk, B. Surrow, K. Tokushuku, O. Turkot, T. Tymieniecka, A. Verbytskyi, W. A. T. Wan Abdullah, K. Wichmann, M. Wing, S. Yamada, Y. Yamazaki, A. F. Żarnecki, and O. Zenaiev
Subjects: Collective flow, Lepton-Nucleon Scattering (experiments), Particle correlations and fluctuations, Quark gluon plasma, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Collective behaviour of final-state hadrons, and multiparton interactions are studied in high-multiplicity ep scattering at a centre-of-mass energy s $$ \sqrt{s} $$ = 318 GeV with the ZEUS detector at HERA. Two- and four-particle azimuthal correlations, as well as multiplicity, transverse momentum, and pseudorapidity distributions for charged-particle multiplicities N ch ≥ 20 are measured. The dependence of two-particle correlations on the virtuality of the exchanged photon shows a clear transition from photoproduction to neutral current deep inelastic scattering. For the multiplicities studied, neither the measurements in photoproduction processes nor those in neutral current deep inelastic scattering indicate significant collective behaviour of the kind observed in high-multiplicity hadronic collisions at RHIC and the LHC. Comparisons of PYTHIA predictions with the measurements in photoproduction strongly indicate the presence of multiparton interactions from hadronic fluctuations of the exchanged photon.
Published: 2021
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5. Two-particle azimuthal correlations as a probe of collective behaviour in deep inelastic ep scattering at HERA

Author: The ZEUS collaboration, I. Abt, L. Adamczyk, R. Aggarwal, V. Aushev, O. Behnke, U. Behrens, A. Bertolin, I. Bloch, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, P. J. Bussey, A. Caldwell, M. Capua, C. D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A. M. Cooper-Sarkar, M. Corradi, R. K. Dementiev, S. Dusini, J. Ferrando, S. Floerchinger, B. Foster, E. Gallo, D. Gangadharan, A. Garfagnini, A. Geiser, L. K. Gladilin, Yu. A. Golubkov, G. Grzelak, C. Gwenlan, D. Hochman, N. Z. Jomhari, I. Kadenko, S. Kananov, U. Karshon, P. Kaur, R. Klanner, U. Klein, I. A. Korzhavina, N. Kovalchuk, H. Kowalski, O. Kuprash, M. Kuze, B. B. Levchenko, A. Levy, B. Löhr, E. Lohrmann, A. Longhin, O. Yu. Lukina, I. Makarenko, J. Malka, S. Masciocchi, K. Nagano, J. D. Nam, J. Onderwaater, Yu. Onishchuk, E. Paul, I. Pidhurskyi, A. Polini, M. Przybycień, A. Quintero, M. Ruspa, D. H. Saxon, U. Schneekloth, T. Schörner-Sadenius, I. Selyuzhenkov, M. Shchedrolosiev, L. M. Shcheglova, I. O. Skillicorn, W. Słomiński, A. Solano, L. Stanco, N. Stefaniuk, P. Stopa, B. Surrow, J. Sztuk-Dambietz, E. Tassi, K. Tokushuku, M. Turcato, O. Turkot, T. Tymieniecka, A. Verbytskyi, W. A. T. Wan Abdullah, K. Wichmann, M. Wing, S. Yamada, Y. Yamazaki, A. F. Żarnecki, L. Zawiejski, and O. Zenaiev
Subjects: Collective flow, Lepton-Nucleon Scattering (experiments), Particle correlations and fluctuations, Quark gluon plasma, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Two-particle azimuthal correlations have been measured in neutral current deep inelastic ep scattering with virtuality Q 2 > 5 GeV2 at a centre-of-mass energy s $$ \sqrt{s} $$ = 318 GeV recorded with the ZEUS detector at HERA. The correlations of charged particles have been measured in the range of laboratory pseudorapidity −1.5 < η < 2.0 and transverse momentum 0.1 < p T < 5.0 GeV and event multiplicities N ch up to six times larger than the average 〈N ch〉 ≈ 5. The two-particle correlations have been measured in terms of the angular observables c n{2} = 〈〈cosnΔφ〉〉, where n is between 1 and 4 and ∆φ is the relative azimuthal angle between the two particles. Comparisons with available models of deep inelastic scattering, which are tuned to reproduce inclusive particle production, suggest that the measured two-particle correlations are dominated by contributions from multijet production. The correlations observed here do not indicate the kind of collective behaviour recently observed at the highest RHIC and LHC energies in high-multiplicity hadronic collisions.
Published: 2020
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6. FCC Physics Opportunities

Author: A. Abada, M. Abbrescia, S. S. AbdusSalam, I. Abdyukhanov, J. Abelleira Fernandez, A. Abramov, M. Aburaia, A. O. Acar, P. R. Adzic, P. Agrawal, J. A. Aguilar-Saavedra, J. J. Aguilera-Verdugo, M. Aiba, I. Aichinger, G. Aielli, A. Akay, A. Akhundov, H. Aksakal, J. L. Albacete, S. Albergo, A. Alekou, M. Aleksa, R. Aleksan, R. M. Alemany Fernandez, Y. Alexahin, R. G. Alía, S. Alioli, N. Alipour Tehrani, B. C. Allanach, P. P. Allport, M. Altınlı, W. Altmannshofer, G. Ambrosio, D. Amorim, O. Amstutz, L. Anderlini, A. Andreazza, M. Andreini, A. Andriatis, C. Andris, A. Andronic, M. Angelucci, F. Antinori, S. A. Antipov, M. Antonelli, M. Antonello, P. Antonioli, S. Antusch, F. Anulli, L. Apolinário, G. Apollinari, A. Apollonio, D. Appelö, R. B. Appleby, Ara. Apyan, Arm. Apyan, A. Arbey, A. Arbuzov, G. Arduini, V. Arı, S. Arias, N. Armesto, R. Arnaldi, S. A. Arsenyev, M. Arzeo, S. Asai, E. Aslanides, R. W. Aßmann, D. Astapovych, M. Atanasov, S. Atieh, D. Attié, B. Auchmann, A. Audurier, S. Aull, S. Aumon, S. Aune, F. Avino, G. Avrillaud, G. Aydın, A. Azatov, G. Azuelos, P. Azzi, O. Azzolini, P. Azzurri, N. Bacchetta, E. Bacchiocchi, H. Bachacou, Y. W. Baek, V. Baglin, Y. Bai, S. Baird, M. J. Baker, M. J. Baldwin, A. H. Ball, A. Ballarino, S. Banerjee, D. P. Barber, D. Barducci, P. Barjhoux, D. Barna, G. G. Barnaföldi, M. J. Barnes, A. Barr, J. Barranco García, J. Barreiro Guimarães da Costa, W. Bartmann, V. Baryshevsky, E. Barzi, S. A. Bass, A. Bastianin, B. Baudouy, F. Bauer, M. Bauer, T. Baumgartner, I. Bautista-Guzmán, C. Bayındır, F. Beaudette, F. Bedeschi, M. Béguin, I. Bellafont, L. Bellagamba, N. Bellegarde, E. Belli, E. Bellingeri, F. Bellini, G. Bellomo, S. Belomestnykh, G. Bencivenni, M. Benedikt, G. Bernardi, J. Bernardi, C. Bernet, J. M. Bernhardt, C. Bernini, C. Berriaud, A. Bertarelli, S. Bertolucci, M. I. Besana, M. Besançon, O. Beznosov, P. Bhat, C. Bhat, M. E. Biagini, J.-L. Biarrotte, A. Bibet Chevalier, E. R. Bielert, M. Biglietti, G. M. Bilei, B. Bilki, C. Biscari, F. Bishara, O. R. Blanco-García, F. R. Blánquez, F. Blekman, A. Blondel, J. Blümlein, T. Boccali, R. Boels, S. A. Bogacz, A. Bogomyagkov, O. Boine-Frankenheim, M. J. Boland, S. Bologna, O. Bolukbasi, M. Bomben, S. Bondarenko, M. Bonvini, E. Boos, B. Bordini, F. Bordry, G. Borghello, L. Borgonovi, S. Borowka, D. Bortoletto, D. Boscherini, M. Boscolo, S. Boselli, R. R. Bosley, F. Bossu, C. Botta, L. Bottura, R. Boughezal, D. Boutin, G. Bovone, I. Božović Jelisavc̆ić, A. Bozbey, C. Bozzi, D. Bozzini, V. Braccini, S. Braibant-Giacomelli, J. Bramante, P. Braun-Munzinger, J. A. Briffa, D. Britzger, S. J. Brodsky, J. J. Brooke, R. Bruce, P. Brückman De Renstrom, E. Bruna, O. Brüning, O. Brunner, K. Brunner, P. Bruzzone, X. Buffat, E. Bulyak, F. Burkart, H. Burkhardt, J.-P. Burnet, F. Butin, D. Buttazzo, A. Butterworth, M. Caccia, Y. Cai, B. Caiffi, V. Cairo, O. Cakir, R. Calaga, S. Calatroni, G. Calderini, G. Calderola, A. Caliskan, D. Calvet, M. Calviani, J. M. 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Cook, L. Cooley, G. Corcella, A. S. Cornell, G. H. Corral, H. Correia-Rodrigues, F. Costanza, P. Costa Pinto, F. Couderc, J. Coupard, N. Craig, I. Crespo Garrido, A. Crivellin, J. F. Croteau, M. Crouch, E. Cruz Alaniz, B. Curé, J. Curti, D. Curtin, M. Czech, C. Dachauer, R. T. D’Agnolo, M. Daibo, A. Dainese, B. Dalena, A. Daljevec, W. Dallapiazza, L. D’Aloia Schwartzentruber, M. Dam, G. D’Ambrosio, S. P. Das, S. DasBakshi, W. da Silva, G. G. da Silveira, V. D’Auria, S. D’Auria, A. David, T. Davidek, A. Deandrea, J. de Blas, C. J. Debono, S. De Curtis, N. De Filippis, D. de Florian, S. Deghaye, S. J. de Jong, C. Del Bo, V. Del Duca, D. Delikaris, F. Deliot, A. Dell’Acqua, L. Delle Rose, M. Delmastro, E. De Lucia, M. Demarteau, D. Denegri, L. Deniau, D. Denisov, H. Denizli, A. Denner, D. d’Enterria, G. de Rijk, A. De Roeck, F. Derue, O. Deschamps, S. Descotes-Genon, P. S. B. Dev, J. B. de Vivie de Régie, R. K. Dewanjee, A. Di Ciaccio, A. Di Cicco, B. M. Dillon, B. Di Micco, P. 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Kretzschmar, R. M. Kriske, H. Kritscher, P. Krkotic, H. Kroha, M. Kucharczyk, S. Kuday, A. Kuendig, G. Kuhlmann, A. Kulesza, Mi. Kumar, Mu. Kumar, A. Kusina, S. Kuttimalai, M. Kuze, T. Kwon, F. Lackner, M. Lackner, E. La Francesca, M. Laine, G. Lamanna, S. La Mendola, E. Lançon, G. Landsberg, P. Langacker, C. Lange, A. Langner, A. J. Lankford, J. P. Lansberg, T. Lari, P. J. Laycock, P. Lebrun, A. Lechner, K. Lee, S. Lee, R. Lee, T. Lefevre, P. Le Guen, T. Lehtinen, S. B. Leith, P. Lenzi, E. Leogrande, C. Leonidopoulos, I. Leon-Monzon, G. Lerner, O. Leroy, T. Lesiak, P. Lévai, A. Leveratto, E. Levichev, G. Li, S. Li, R. Li, D. Liberati, M. Liepe, D. A. Lissauer, Z. Liu, A. Lobko, E. Locci, E. Logothetis Agaliotis, M. P. Lombardo, A. J. Long, C. Lorin, R. Losito, A. Louzguiti, I. Low, D. Lucchesi, M. T. Lucchini, A. Luciani, M. Lueckhof, A. J. G. Lunt, M. Luzum, D. A. Lyubimtsev, M. Maggiora, N. Magnin, M. A. Mahmoud, F. Mahmoudi, J. Maitre, V. Makarenko, A. Malagoli, J. Malclés, L. Malgeri, P. J. Mallon, F. Maltoni, S. Malvezzi, O. B. Malyshev, G. Mancinelli, P. Mandrik, P. Manfrinetti, M. Mangano, P. Manil, M. Mannelli, G. Marchiori, F. Marhauser, V. Mariani, V. Marinozzi, S. Mariotto, P. Marquard, C. Marquet, T. Marriott-Dodington, R. Martin, O. Martin, J. Martin Camalich, T. Martinez, H. Martinez Bruzual, M. I. Martínez-Hernández, D. E. Martins, S. Marzani, D. Marzocca, L. Marzola, S. Masciocchi, I. Masina, A. Massimiliano, A. Massironi, T. Masubuchi, V. A. Matveev, M. A. Mazzoni, M. McCullough, P. A. McIntosh, P. Meade, L. Medina, A. Meier, J. Meignan, B. Mele, J. G. Mendes Saraiva, F. Menez, M. Mentink, E. Meoni, P. Meridiani, M. Merk, P. Mermod, V. Mertens, L. Mether, E. Métral, M. Migliorati, A. Milanese, C. Milardi, G. Milhano, B. L. Militsyn, F. Millet, I. Minashvili, J. V. Minervini, L. S. Miralles, D. Mirarchi, S. Mishima, D. P. Missiaen, G. Mitselmakher, T. Mitsuhashi, J. Mnich, M. Mohammadi Najafabadi, R. N. Mohapatra, N. Mokhov, J. G. Molson, R. Monge, C. Montag, G. Montagna, S. Monteil, G. Montenero, E. Montesinos, F. Moortgat, N. Morange, G. Morello, M. Moreno Llácer, M. Moretti, S. Moretti, A. K. Morley, A. Moros, I. Morozov, V. Morretta, M. Morrone, A. Mostacci, S. Muanza, N. Muchnoi, M. Mühlegger, M. Mulder, M. Mulders, B. Müller, F. Müller, A.-S. Müller, J. Munilla, M. J. Murray, Y. Muttoni, S. Myers, M. Mylona, J. Nachtman, T. Nakamoto, M. Nardecchia, G. Nardini, P. Nason, Z. Nergiz, A. V. Nesterenko, A. Nettsträter, C. Neubüser, J. Neundorf, F. Niccoli, O. Nicrosini, Y. Nie, U. Niedermayer, J. Niedziela, A. Niemi, S. A. Nikitin, A. Nisati, J. M. No, M. Nonis, Y. Nosochkov, M. Novák, A. Novokhatski, J. M. O’Callaghan, C. Ochando, S. Ogur, K. Ohmi, K. Oide, V. A. Okorokov, Y. Okumura, C. Oleari, F. I. Olness, Y. Onel, M. Ortino, J. Osborne, P. Osland, T. Otto, K. Y. Oyulmaz, A. Ozansoy, V. Özcan, K. Özdemir, C. E. Pagliarone, H. F. Pais da Silva, E. Palmieri, L. Palumbo, A. Pampaloni, R.-Q. Pan, M. Panareo, O. Panella, G. Panico, G. Panizzo, A. A. Pankov, V. Pantsyrny, C. G. Papadopoulos, A. Papaefstathiou, Y. Papaphilippou, M. A. Parker, V. Parma, M. Pasquali, S. K. Patra, R. Patterson, H. Paukkunen, F. Pauss, S. Peggs, J.-P. Penttinen, G. Peón, E. E. Perepelkin, E. Perez, J. C. Perez, G. Perez, F. Pérez, E. Perez Codina, J. Perez Morales, M. Perfilov, H. Pernegger, M. Peruzzi, C. Pes, K. Peters, S. Petracca, F. Petriello, L. Pezzotti, S. Pfeiffer, F. Piccinini, T. Pieloni, M. Pierini, H. Pikhartova, G. Pikurs, E. Pilicer, P. Piminov, C. Pira, R. Pittau, W. Płaczek, M. Plagge, T. Plehn, M.-A. Pleier, M. Płoskoń, M. Podeur, H. Podlech, T. Podzorny, L. Poggioli, A. Poiron, G. Polesello, M. Poli Lener, A. Polini, J. Polinski, S. M. Polozov, L. Ponce, M. Pont, L. Pontecorvo, T. Portaluri, K. Potamianos, C. Prasse, M. Prausa, A. Preinerstorfer, E. Premat, T. Price, M. Primavera, F. Prino, M. Prioli, J. Proudfoot, A. Provino, T. Pugnat, N. Pukhaeva, S. Puławski, D. Pulikowski, G. Punzi, M. Putti, A. Pyarelal, H. Quack, M. Quispe, A. Racioppi, H. Rafique, V. Raginel, M. Raidal, N. S. Ramírez-Uribe, M. J. Ramsey-Musolf, R. Rata, P. Ratoff, F. Ravotti, P. Rebello Teles, M. Reboud, S. Redaelli, E. Renner, A. E. Rentería-Olivo, M. Rescigno, J. Reuter, A. Ribon, A. M. Ricci, W. Riegler, S. Riemann, B. Riemann, T. Riemann, J. M. Rifflet, R. A. Rimmer, R. Rinaldesi, L. Rinolfi, O. Rios Rubiras, T. Risselada, A. Rivetti, L. Rivkin, T. Rizzo, T. Robens, F. Robert, A. J. Robson, E. Rochepault, C. Roda, G. Rodrigo, M. Rodríguez-Cahuantzi, C. Rogan, M. Roig, S. Rojas-Torres, J. Rojo, G. Rolandi, G. Rolando, P. Roloff, A. Romanenko, A. Romanov, F. Roncarolo, A. Rosado Sanchez, G. Rosaz, L. Rossi, A. Rossi, R. Rossmanith, B. Rousset, C. Royon, X. Ruan, I. Ruehl, V. Ruhlmann-Kleider, R. Ruiz, L. Rumyantsev, R. Ruprecht, A. I. Ryazanov, A. Saba, R. Sadykov, D. Saez de Jauregui, M. Sahin, B. Sailer, M. Saito, F. Sala, G. P. Salam, J. Salfeld-Nebgen, C. A. Salgado, S. Salini, J. M. Sallese, T. Salmi, A. Salzburger, O. A. Sampayo, S. Sanfilippo, J. Santiago, E. Santopinto, R. Santoro, A. Sanz Ull, X. Sarasola, I. H. Sarpün, M. Sauvain, S. Savelyeva, R. Sawada, G. F. R. Sborlini, A. Schaffer, M. Schaumann, M. Schenk, C. Scheuerlein, I. Schienbein, K. Schlenga, H. Schmickler, R. Schmidt, D. Schoerling, A. Schoning, T. Schörner-Sadenius, M. Schott, D. Schulte, P. Schwaller, C. Schwanenberger, P. Schwemling, N. Schwerg, L. Scibile, A. Sciuto, E. Scomparin, C. Sebastiani, B. Seeber, M. Segreti, P. Selva, M. Selvaggi, C. Senatore, A. Senol, L. Serin, M. Serluca, N. Serra, A. Seryi, L. Sestini, A. Sfyrla, M. Shaposhnikov, E. Shaposhnikova, B. Yu. Sharkov, D. Shatilov, J. Shelton, V. Shiltsev, I. P. Shipsey, G. D. Shirkov, A. Shivaji, D. Shwartz, T. Sian, S. Sidorov, A. Siemko, L. Silvestrini, N. Simand, F. Simon, B. K. Singh, A. Siódmok, Y. Sirois, E. Sirtori, R. Sirvinskaite, B. Sitar, T. Sjöstrand, P. Skands, E. Skordis, K. Skovpen, M. Skrzypek, E. Slade, P. Slavich, R. Slovak, V. Smaluk, V. Smirnov, W. Snoeys, L. Soffi, P. Sollander, O. Solovyanov, H. K. Soltveit, H. Song, P. Sopicki, M. Sorbi, L. Spallino, M. Spannowsky, B. Spataro, P. Sphicas, H. Spiesberger, P. Spiller, M. Spira, T. Srivastava, J. Stachel, A. Stakia, J. L. Stanyard, E. Starchenko, A. Yu. Starikov, A. M. Staśto, M. Statera, R. Steerenberg, J. Steggemann, A. Stenvall, F. Stivanello, D. Stöckinger, L. S. Stoel, M. Stöger-Pollach, B. Strauss, M. Stuart, G. Stupakov, S. Su, A. Sublet, K. Sugita, L. Sulak, M. K. Sullivan, S. Sultansoy, T. Sumida, K. Suzuki, G. Sylva, M. J. Syphers, A. Sznajder, M. Taborelli, N. A. Tahir, E. Tal Hod, M. Takeuchi, C. Tambasco, J. Tanaka, K. Tang, I. Tapan, S. Taroni, G. F. Tartarelli, G. Tassielli, L. Tavian, T. M. Taylor, G. N. Taylor, A. M. Teixeira, G. Tejeda-Muñoz, V. I. Telnov, R. Tenchini, H. H. J. ten Kate, K. Terashi, A. Tesi, M. Testa, C. Tetrel, D. Teytelman, J. Thaler, A. Thamm, S. Thomas, M. T. Tiirakari, V. Tikhomirov, D. Tikhonov, H. Timko, V. Tisserand, L. M. Tkachenko, J. Tkaczuk, J. Ph. Tock, B. Todd, E. Todesco, R. Tomás Garcia, D. Tommasini, G. Tonelli, F. Toral, T. Torims, R. Torre, Z. Townsend, R. Trant, D. Treille, L. Trentadue, A. Tricoli, A. Tricomi, W. Trischuk, I. S. Tropin, B. Tuchming, A. A. Tudora, B. Turbiarz, I. Turk Cakir, M. Turri, T. Tydecks, J. Usovitsch, J. Uythoven, R. Vaglio, A. Valassi, F. Valchkova, M. A. Valdivia Garcia, P. Valente, R. U. Valente, A.-M. Valente-Feliciano, G. Valentino, L. Vale Silva, J. M. Valet, R. Valizadeh, J. W. F. Valle, S. Vallecorsa, G. Vallone, M. van Leeuwen, U. H. van Rienen, L. van Riesen-Haupt, M. Varasteh, L. Vecchi, P. Vedrine, G. Velev, R. Veness, A. Ventura, W. Venturini Delsolaro, M. Verducci, C. B. Verhaaren, C. Vernieri, A. P. Verweij, O. Verwilligen, O. Viazlo, A. Vicini, G. Viehhauser, N. Vignaroli, M. Vignolo, A. Vitrano, I. Vivarelli, S. Vlachos, M. Vogel, D. M. Vogt, V. Völkl, P. Volkov, G. Volpini, J. von Ahnen, G. Vorotnikov, G. G. Voutsinas, V. Vysotsky, U. Wagner, R. Wallny, L.-T. Wang, R. Wang, K. Wang, B. F. L. Ward, T. P. Watson, N. K. Watson, Z. Wa̧s, C. Weiland, S. Weinzierl, C. P. Welsch, J. Wenninger, M. Widorski, U. A. Wiedemann, H.-U. Wienands, G. Wilkinson, P. H. Williams, A. Winter, A. Wohlfahrt, T. Wojtoń, D. Wollmann, J. Womersley, D. Woog, X. Wu, A. Wulzer, M. K. Yanehsari, G. Yang, H. J. Yang, W.-M. Yao, E. Yazgan, V. Yermolchik, Ay. Yilmaz, Al. Yilmaz, H.-D. Yoo, S. A. Yost, T. You, C. Young, T.-T. Yu, F. Yu, A. Zaborowska, S. G. Zadeh, M. Zahnd, M. Zanetti, L. Zanotto, L. Zawiejski, P. Zeiler, M. Zerlauth, S. M. Zernov, G. Zevi Dell Porta, Z. Zhang, Y. Zhang, C. Zhang, H. Zhang, Z. Zhao, Y.-M. Zhong, J. Zhou, D. Zhou, P. Zhuang, G. Zick, F. Zimmermann, J. Zinn-Justin, L. Zivkovic, A. V. Zlobin, M. Zobov, J. Zupan, J. Zurita, and The FCC Collaboration
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We review the physics opportunities of the Future Circular Collider, covering its e+e-, pp, ep and heavy ion programmes. We describe the measurement capabilities of each FCC component, addressing the study of electroweak, Higgs and strong interactions, the top quark and flavour, as well as phenomena beyond the Standard Model. We highlight the synergy and complementarity of the different colliders, which will contribute to a uniquely coherent and ambitious research programme, providing an unmatchable combination of precision and sensitivity to new physics.
Published: 2019
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7. Charm production in charged current deep inelastic scattering at HERA

Author: The ZEUS collaboration, I. Abt, L. Adamczyk, R. Aggarwal, V. Aushev, O. Behnke, U. Behrens, A. Bertolin, I. Bloch, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, P. J. Bussey, A. Caldwell, M. Capua, C. D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A. M. Cooper-Sarkar, M. Corradi, R. K. Dementiev, S. Dusini, J. Ferrando, B. Foster, E. Gallo, D. Gangadharan, A. Garfagnini, A. Geiser, L. K. Gladilin, Yu. A. Golubkov, G. Grzelak, C. Gwenlan, D. Hochman, N. Z. Jomhari, I. Kadenko, S. Kananov, U. Karshon, P. Kaur, R. Klanner, U. Klein, I. A. Korzhavina, N. Kovalchuk, H. Kowalski, O. Kuprash, M. Kuze, B. B. Levchenko, A. Levy, B. Löhr, E. Lohrmann, A. Longhin, O. Yu. Lukina, I. Makarenko, J. Malka, S. Masciocchi, K. Nagano, J. D. Nam, J. Onderwaater, Yu. Onishchuk, E. Paul, I. Pidhurskyi, A. Polini, M. Przybycien, A. Quintero, M. Ruspa, D. H. Saxon, U. Schneekloth, T. Schörner-Sadenius, I. Selyuzhenkov, M. Shchedrolosiev, L. M. Shcheglova, O. Shkola, I. O. Skillicorn, W. Slominski, A. Solano, L. Stanco, N. Stefaniuk, P. Stopa, B. Surrow, J. Sztuk-Dambietz, E. Tassi, K. Tokushuku, M. Turcato, O. Turkot, T. Tymieniecka, A. Verbytskyi, W. A. T. Wan Abdullah, K. Wichmann, M. Wing, S. Yamada, Y. Yamazaki, A. F. Żarnecki, L. Zawiejski, and O. Zenaiev
Subjects: Heavy quark production, Lepton-Nucleon Scattering (experiments), QCD, Electroweak interaction, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Charm production in charged current deep inelastic scattering has been measured for the first time in e ± p collisions, using data collected with the ZEUS detector at HERA, corresponding to an integrated luminosity of 358 pb−1. Results are presented separately for e + p and e − p scattering at a centre-of-mass energy of s $$ \sqrt{s} $$ = 318 GeV within a kinematic phase-space region of 200 GeV2 < Q 2 < 60000 GeV2 and y < 0.9, where Q 2 is the squared four-momentum transfer and y is the inelasticity. The measured cross sections of electroweak charm production are consistent with expectations from the Standard Model within the large statistical uncertainties.
Published: 2019
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8. Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic ep scattering at HERA

Author: H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, R. Aggarwal, V. Andreev, S. Antonelli, V. Aushev, A. Baghdasaryan, K. Begzsuren, O. Behnke, U. Behrens, A. Belousov, A. Bertolin, I. Bloch, A. Bolz, V. Boudry, G. Brandt, V. Brisson, D. Britzger, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, A. Buniatyan, P. J. Bussey, A. Bylinkin, L. Bystritskaya, A. Caldwell, A. J. Campbell, K. B. Cantun Avila, M. Capua, C. D. Catterall, K. Cerny, V. Chekelian, J. Chwastowski, J. Ciborowski, R. Ciesielski, J. G. Contreras, A. M. Cooper-Sarkar, M. Corradi, J. Cvach, J. B. Dainton, K. Daum, R. K. Dementiev, R. C. E. Devenish, C. Diaconu, M. Dobre, S. Dusini, G. Eckerlin, S. Egli, E. Elsen, L. Favart, A. Fedotov, J. Feltesse, M. Fleischer, A. Fomenko, B. Foster, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, A. Gizhko, L. K. Gladilin, L. Goerlich, N. Gogitidze, Yu. A. Golubkov, M. Gouzevitch, C. Grab, A. Grebenyuk, T. Greenshaw, G. Grindhammer, G. Grzelak, C. Gwenlan, D. Haidt, R. C. W. Henderson, J. Hladkỳ, O. Hlushchenko, D. Hochman, D. Hoffmann, R. Horisberger, T. Hreus, F. Huber, Z. A. Ibrahim, Y. Iga, M. Jacquet, X. Janssen, N. Z. Jomhari, A. W. Jung, H. Jung, I. Kadenko, S. Kananov, M. Kapichine, U. Karshon, J. Katzy, P. Kaur, C. Kiesling, D. Kisielewska, R. Klanner, M. Klein, U. Klein, C. Kleinwort, R. Kogler, I. A. Korzhavina, P. Kostka, A. Kotański, N. Kovalchuk, H. Kowalski, J. Kretzschmar, D. Krücker, K. Krüger, B. Krupa, O. Kuprash, M. Kuze, M. P. J. Landon, W. Lange, P. Laycock, A. Lebedev, B. B. Levchenko, S. Levonian, A. Levy, V. Libov, K. Lipka, M. Lisovyi, B. List, J. List, B. Lobodzinski, B. Löhr, E. Lohrmann, A. Longhin, O. Yu. Lukina, I. Makarenko, E. Malinovski, J. Malka, H. -U. Martyn, S. Masciocchi, S. J. Maxfield, A. Mehta, A. B. Meyer, H. Meyer, J. Meyer, S. Mikocki, F. Mohamad Idris, N. Mohammad Nasir, A. Morozov, K. Müller, V. Myronenko, K. Nagano, J. D. Nam, Th. Naumann, P. R. Newman, M. Nicassio, C. Niebuhr, G. Nowak, J. E. Olsson, J. Onderwaater, Yu. Onishchuk, D. Ozerov, C. Pascaud, G. D. Patel, E. Paul, E. Perez, W. Perlański, A. Petrukhin, I. Picuric, H. Pirumov, D. Pitzl, N. S. Pokrovskiy, R. Polifka, A. Polini, M. Przybycień, V. Radescu, N. Raicevic, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, M. Rotaru, M. Ruspa, D. Šálek, D. P. C. Sankey, M. Sauter, E. Sauvan, D. H. Saxon, M. Schioppa, S. Schmitt, U. Schneekloth, L. Schoeffel, A. Schöning, T. Schörner-Sadenius, F. Sefkow, I. Selyuzhenkov, L. M. Shcheglova, S. Shushkevich, Yu. Shyrma, I. O. Skillicorn, W. Słomiński, A. Solano, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, L. Stanco, M. Steder, N. Stefaniuk, B. Stella, A. Stern, P. Stopa, U. Straumann, B. Surrow, T. Sykora, J. Sztuk-Dambietz, E. Tassi, P. D. Thompson, K. Tokushuku, J. Tomaszewska, D. Traynor, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, A. Valkárová, C. Vallée, P. Van Mechelen, Y. Vazdik, A. Verbytskyi, W. A. T. Wan Abdullah, D. Wegener, K. Wichmann, M. Wing, E. Wünsch, S. Yamada, Y. Yamazaki, J. Žáček, A. F. Żarnecki, L. Zawiejski, O. Zenaiev, Z. Zhang, B. O. Zhautykov, R. Žlebčík, H. Zohrabyan, and F. Zomer
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Measurements of open charm and beauty production cross sections in deep inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections are obtained in the kinematic range of negative four-momentum transfer squared of the photon $$2.5~\hbox {GeV}^2\le Q^2 \le 2000\, \hbox {GeV}^2$$ 2.5GeV2≤Q2≤2000GeV2 and Bjorken scaling variable $$3 \cdot 10^{-5} \le x_\mathrm{Bj} \le 5 \cdot 10^{-2}$$ 3·10-5≤xBj≤5·10-2 . The combination method accounts for the correlations of the statistical and systematic uncertainties among the different datasets. Perturbative QCD calculations are compared to the combined data. A next-to-leading order QCD analysis is performed using these data together with the combined inclusive deep inelastic scattering cross sections from HERA. The running charm- and beauty-quark masses are determined as $$m_c(m_c) = 1.290^{+0.046}_{-0.041} \mathrm{(exp/fit)}$$ mc(mc)=1.290-0.041+0.046(exp/fit) $${}^{+0.062}_{-0.014} \mathrm{(model)}$$ -0.014+0.062(model) $${}^{+0.003}_{-0.031} \mathrm{(parameterisation)}$$ -0.031+0.003(parameterisation) GeV and $$m_b(m_b) = 4.049^{+0.104}_{-0.109} \mathrm{(exp/fit)}$$ mb(mb)=4.049-0.109+0.104(exp/fit) $${}^{+0.090}_{-0.032} \mathrm{(model)}$$ -0.032+0.090(model) $${}^{+0.001}_{-0.031} \mathrm{(parameterisation)}~\mathrm{GeV}$$ -0.031+0.001(parameterisation)GeV .
Published: 2018
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9. Further studies of isolated photon production with a jet in deep inelastic scattering at HERA

Author: The ZEUS collaboration, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, R. Aggarwal, S. Antonelli, V. Aushev, Y. Aushev, O. Behnke, U. Behrens, A. Bertolin, I. Bloch, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, P. J. Bussey, A. Caldwell, M. Capua, C. D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A. M. Cooper-Sarkar, M. Corradi, R. K. Dementiev, R. C. E. Devenish, S. Dusini, B. Foster, G. Gach, E. Gallo, A. Garfagnini, A. Geiser, A. Gizhko, L. K. Gladilin, Yu. A. Golubkov, G. Grzelak, M. Guzik, C. Gwenlan, O. Hlushchenko, D. Hochman, R. Hori, Z. A. Ibrahim, Y. Iga, M. Ishitsuka, N. Z. Jomhari, I. Kadenko, S. Kananov, U. Karshon, P. Kaur, D. Kisielewska, R. Klanner, U. Klein, I. A. Korzhavina, A. Kotanski, N. Kovalchuk, H. Kowalski, B. Krupa, O. Kuprash, M. Kuze, B. B. Levchenko, A. Levy, M. Lisovyi, E. Lobodzinska, B. Löhr, E. Lohrmann, A. Longhin, O. Yu. Lukina, J. Malka, A. Mastroberardino, F. Mohamad Idris, N. Mohammad Nasir, V. Myronenko, K. Nagano, Yu. Onishchuk, E. Paul, W. Perlanski, N. S. Pokrovskiy, A. Polini, M. Przybycien, M. Ruspa, D. H. Saxon, M. Schioppa, U. Schneekloth, T. Schörner-Sadenius, L. M. Shcheglova, O. Shkola, Yu. Shyrma, I. O. Skillicorn, W. Slominski, A. Solano, L. Stanco, N. Stefaniuk, A. Stern, P. Stopa, J. Sztuk-Dambietz, E. Tassi, K. Tokushuku, J. Tomaszewska, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, A. Verbytskyi, W. A. T. Wan Abdullah, K. Wichmann, M. Wing, S. Yamada, Y. Yamazaki, A. F. Żarnecki, L. Zawiejski, O. Zenaiev, and B. O. Zhautykov
Subjects: Lepton-Nucleon Scattering (experiments), Photon production, QCD, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Isolated photons with high transverse energy have been studied in deep inelastic ep scattering with the ZEUS detector at HERA, using an integrated luminosity of 326 pb−1 in the range of exchanged-photon virtuality 10-350 GeV2. Outgoing isolated photons with transverse energy 4
Published: 2018
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10. Search for a narrow baryonic state decaying to pKS0 and p‾KS0 in deep inelastic scattering at HERA

Author: H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, S. Antonelli, V. Aushev, O. Behnke, U. Behrens, A. Bertolin, S. Bhadra, I. Bloch, E.G. Boos, I. Brock, N.H. Brook, R. Brugnera, A. Bruni, P.J. Bussey, A. Caldwell, M. Capua, C.D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A.M. Cooper-Sarkar, M. Corradi, R.K. Dementiev, R.C.E. Devenish, S. Dusini, B. Foster, G. Gach, E. Gallo, A. Garfagnini, A. Geiser, A. Gizhko, L.K. Gladilin, Yu.A. Golubkov, G. Grzelak, M. Guzik, C. Gwenlan, W. Hain, O. Hlushchenko, D. Hochman, R. Hori, Z.A. Ibrahim, Y. Iga, M. Ishitsuka, F. Januschek, N.Z. Jomhari, I. Kadenko, S. Kananov, U. Karshon, P. Kaur, D. Kisielewska, R. Klanner, U. Klein, I.A. Korzhavina, A. Kotański, U. Kötz, N. Kovalchuk, H. Kowalski, B. Krupa, O. Kuprash, M. Kuze, B.B. Levchenko, A. Levy, S. Limentani, M. Lisovyi, E. Lobodzinska, B. Löhr, E. Lohrmann, A. Longhin, D. Lontkovskyi, O.Yu. Lukina, I. Makarenko, J. Malka, A. Mastroberardino, F. Mohamad Idris, N. Mohammad Nasir, V. Myronenko, K. Nagano, T. Nobe, R.J. Nowak, Yu. Onishchuk, E. Paul, W. Perlański, N.S. Pokrovskiy, A. Polini, M. Przybycień, P. Roloff, M. Ruspa, D.H. Saxon, M. Schioppa, U. Schneekloth, T. Schörner-Sadenius, L.M. Shcheglova, R. Shevchenko, O. Shkola, Yu. Shyrma, I. Singh, I.O. Skillicorn, W. Słomiński, A. Solano, L. Stanco, N. Stefaniuk, A. Stern, P. Stopa, J. Sztuk-Dambietz, E. Tassi, K. Tokushuku, J. Tomaszewska, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, A. Verbytskyi, W.A.T. Wan Abdullah, K. Wichmann, M. Wing, S. Yamada, Y. Yamazaki, N. Zakharchuk, A.F. Żarnecki, L. Zawiejski, O. Zenaiev, B.O. Zhautykov, and D.S. Zotkin
Subjects: Physics, QC1-999
Abstract: A search for a narrow baryonic state in the pKS0 and p‾KS0 system has been performed in ep collisions at HERA with the ZEUS detector using an integrated luminosity of 358pb−1 taken in 2003–2007. The search was performed with deep inelastic scattering events at an ep centre-of-mass energy of 318GeV for exchanged photon virtuality, Q2, between 20 and 100GeV2. Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample of 121 pb−1 taken in 1996–2000, no resonance peak was found in the p(p‾)KS0 invariant-mass distribution in the range 1.45–1.7 GeV. Upper limits on the production cross section are set.
Published: 2016
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11. Measurement of the cross-section ratio σψ(2S)/σJ/ψ(1S) in deep inelastic exclusive ep scattering at HERA

Author: H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, S. Antonelli, V. Aushev, Y. Aushev, O. Behnke, U. Behrens, A. Bertolin, I. Bloch, E.G. Boos, K. Borras, I. Brock, N.H. Brook, R. Brugnera, A. Bruni, P.J. Bussey, A. Caldwell, M. Capua, C.D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A.M. Cooper-Sarkar, M. Corradi, F. Corriveau, R.K. Dementiev, R.C.E. Devenish, G. Dolinska, S. Dusini, J. Figiel, B. Foster, G. Gach, E. Gallo, A. Garfagnini, A. Geiser, A. Gizhko, L.K. Gladilin, Yu.A. Golubkov, J. Grebenyuk, I. Gregor, G. Grzelak, O. Gueta, M. Guzik, W. Hain, D. Hochman, R. Hori, Z.A. Ibrahim, Y. Iga, M. Ishitsuka, A. Iudin, F. Januschek, N.Z. Jomhari, I. Kadenko, S. Kananov, U. Karshon, M. Kaur, P. Kaur, D. Kisielewska, R. Klanner, U. Klein, N. Kondrashova, O. Kononenko, Ie. Korol, I.A. Korzhavina, A. Kotański, U. Kötz, N. Kovalchuk, H. Kowalski, B. Krupa, O. Kuprash, M. Kuze, B.B. Levchenko, A. Levy, V. Libov, S. Limentani, M. Lisovyi, E. Lobodzinska, B. Löhr, E. Lohrmann, A. Longhin, D. Lontkovskyi, O.Yu. Lukina, I. Makarenko, J. Malka, S. Mergelmeyer, F. Mohamad Idris, N. Mohammad Nasir, V. Myronenko, K. Nagano, T. Nobe, D. Notz, R.J. Nowak, Yu. Onishchuk, E. Paul, W. Perlański, N.S. Pokrovskiy, M. Przybycień, P. Roloff, I. Rubinsky, M. Ruspa, D.H. Saxon, M. Schioppa, W.B. Schmidke, U. Schneekloth, T. Schörner-Sadenius, L.M. Shcheglova, R. Shevchenko, O. Shkola, Yu. Shyrma, I. Singh, I.O. Skillicorn, W. Słomiński, A. Solano, L. Stanco, N. Stefaniuk, A. Stern, P. Stopa, J. Sztuk-Dambietz, D. Szuba, J. Szuba, E. Tassi, K. Tokushuku, J. Tomaszewska, A. Trofymov, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, A. Verbytskyi, O. Viazlo, R. Walczak, W.A.T. Wan Abdullah, K. Wichmann, M. Wing, G. Wolf, S. Yamada, Y. Yamazaki, N. Zakharchuk, A.F. Żarnecki, L. Zawiejski, O. Zenaiev, B.O. Zhautykov, N. Zhmak, and D.S. Zotkin
Subjects: Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: The exclusive deep inelastic electroproduction of ψ(2S) and J/ψ(1S) at an ep centre-of-mass energy of 317 GeV has been studied with the ZEUS detector at HERA in the kinematic range 2
Published: 2016
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12. Search for charged Higgs bosons in e+e− collisions at $\sqrt{s}=189\mbox{--}209\ \mbox{GeV}$

Author: The OPAL Collaboration, G. Abbiendi, C. Ainsley, P. F. Åkesson, G. Alexander, G. Anagnostou, K. J. Anderson, S. Asai, D. Axen, I. Bailey, E. Barberio, T. Barillari, R. J. Barlow, R. J. Batley, P. Bechtle, T. Behnke, K. W. Bell, P. J. Bell, G. Bella, A. Bellerive, G. Benelli, S. Bethke, O. Biebel, O. Boeriu, P. Bock, M. Boutemeur, S. Braibant, R. M. Brown, H. J. Burckhart, S. Campana, P. Capiluppi, R. K. Carnegie, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, C. Ciocca, A. Csilling, M. Cuffiani, S. Dado, M. Dallavalle, A. De Roeck, E. A. De Wolf, K. Desch, B. Dienes, J. Dubbert, E. Duchovni, G. Duckeck, I. P. Duerdoth, E. Etzion, F. Fabbri, P. Ferrari, F. Fiedler, I. Fleck, M. Ford, A. Frey, P. Gagnon, J. W. Gary, C. Geich-Gimbel, G. Giacomelli, P. Giacomelli, M. Giunta, J. Goldberg, E. Gross, J. Grunhaus, M. Gruwé, A. Gupta, C. Hajdu, M. Hamann, G. G. Hanson, A. Harel, M. Hauschild, C. M. Hawkes, R. Hawkings, G. Herten, R. D. Heuer, J. C. Hill, K. Hoffman, D. Horváth, P. Igo-Kemenes, K. Ishii, H. Jeremie, P. Jovanovic, T. R. Junk, J. Kanzaki, D. Karlen, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, S. Kluth, T. Kobayashi, M. Kobel, S. Komamiya, T. Krämer, A. Krasznahorkay, P. Krieger, J. von Krogh, T. Kuhl, M. Kupper, G. D. Lafferty, H. Landsman, D. Lanske, D. Lellouch, J. Letts, L. Levinson, J. Lillich, S. L. Lloyd, F. K. Loebinger, J. Lu, A. Ludwig, J. Ludwig, W. Mader, S. Marcellini, T. E. Marchant, A. J. Martin, T. Mashimo, P. Mättig, J. McKenna, R. A. McPherson, F. Meijers, W. Menges, F. S. Merritt, H. Mes, N. Meyer, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, W. Mohr, T. Mori, A. Mutter, K. Nagai, I. Nakamura, H. Nanjo, H. A. Neal, S. W. O’Neale, A. Oh, A. Okpara, M. J. Oreglia, S. Orito, C. Pahl, G. Pásztor, J. R. Pater, J. E. Pilcher, J. Pinfold, D. E. Plane, O. Pooth, M. Przybycień, A. Quadt, K. Rabbertz, C. Rembser, P. Renkel, J. M. Roney, A. M. Rossi, Y. Rozen, K. Runge, K. Sachs, T. Saeki, E. K. G. Sarkisyan, A. D. Schaile, O. Schaile, P. Scharff-Hansen, J. Schieck, T. Schörner-Sadenius, M. Schröder, M. Schumacher, R. Seuster, T. G. Shears, B. C. Shen, P. Sherwood, A. Skuja, A. M. Smith, R. Sobie, S. Söldner-Rembold, F. Spano, A. Stahl, D. Strom, R. Ströhmer, S. Tarem, M. Tasevsky, R. Teuscher, M. A. Thomson, E. Torrence, D. Toya, I. Trigger, Z. Trócsányi, E. Tsur, M. F. Turner-Watson, I. Ueda, B. Ujvári, C. F. Vollmer, P. Vannerem, R. Vértesi, M. Verzocchi, H. Voss, J. Vossebeld, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wells, T. Wengler, N. Wermes, G. W. Wilson, J. A. Wilson, G. Wolf, T. R. Wyatt, S. Yamashita, D. Zer-Zion, and L. Zivkovic
Subjects: Higgs Boson, Systematic Uncertainty, Test Mass, Charged Higgs Boson, Likelihood Selection, Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract A search is made for charged Higgs bosons predicted by Two-Higgs-Doublet extensions of the Standard Model (2HDM) using electron-positron collision data collected by the OPAL experiment at $\sqrt{s}=189\mbox{--}209\ \mbox{GeV}$ , corresponding to an integrated luminosity of approximately 600 pb−1. Charged Higgs bosons are assumed to be pair-produced and to decay into $\mathrm{q} \bar{\mathrm{q}}$ , τν τ or AW±. No signal is observed. Model-independent limits on the charged Higgs-boson production cross section are derived by combining these results with previous searches at lower energies. Under the assumption $\mathrm{BR} (\mathrm{H}^{\pm} \to \tau\nu_{\tau}) + \mathrm{BR} (\mathrm{H}^{\pm} \to \mathrm{q} \bar{\mathrm{q}}) = 1$ , motivated by general 2HDM type II models, excluded areas on the $[m_{\mathrm{H}^{\pm}} , \mathrm{BR} (\mathrm {H}^{\pm} \to \tau\nu_{\tau})]$ plane are presented and charged Higgs bosons are excluded up to a mass of 76.3 GeV at 95 % confidence level, independent of the branching ratio BR(H±→τν τ). A scan of the 2HDM type I model parameter space is performed and limits on the Higgs-boson masses $m_{\mathrm{H}^{\pm}}$ and m A are presented for different choices of tanβ.
Published: 2012
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13. Measurement of high-Q (2) charged current deep inelastic scattering cross sections with a longitudinally polarised positron beam at HERA

Author: H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWAL, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A. N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, D. BARTSCH, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, T. BOLD, E. G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, S. K. BOUTLE, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P. J. BUSSEY, J. M. BUTTERWORTH, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C. D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, F. CINDOLO, A. M. COOPER SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DE FAVEREAU, J. DEL PESO, R. K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R. C. E. DEVENISH, D. DOBUR, B. A. DOLGOSHEIN, A. T. DOYLE, V. DRUGAKOV, L. S. DURKIN, S. DUSINI, Y. EISENBERG, P. F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M. I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L. K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, Y.U. A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J. C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, U. HOLM, R. HORI, K. HORTON, A. HÜTTMANN, G. IACOBUCCI, Z. A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H. P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T. W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I. I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L. A. KHEIN, J. Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, D. KOLLAR, P. KOOIJMAN, I.E. KOROL, I. A. KORZHAVINA, A. KOTA´NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, V. A. KUZMIN, A. LEE, B. B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T. Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, J. H. LOIZIDES, K. R. LONG, A. LONGHIN, D. LONTKOVSKYI, O. Y.U. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J. F. MARTIN, A. MASTROBERARDINO, T. MATSUMOTO, M. C. K. MATTINGLY, I. A. MELZER PELLMANN, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J. D. MORRIS, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, U. NOOR, D. NOTZ, R. J. NOWAK, A. E. NUNCIO QUIROZ, B. Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, Y.U. ONISHCHUK, O. OTA, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J. M. PAWLAK, B. PAWLIK, P. G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N. S. POKROVSKIY, A. POLINI, A. S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D. D. REEDER, B. REISERT, Z. REN, J. REPOND, Y. D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, A. A. SAVIN, D. H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W. B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER SADENIUS, J. SCHWARTZ, F. SCIULLI, L. M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I. O. SKILLICORN, W. SLOMI´NSKI, W. H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T. P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK, D. SZUBA, J. SZUBA, A. D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, V. VIAZLO, N. N. VLASOV, O. VOLYNETS, R. WALCZAK, W. A. T. WAN ABDULLAH, J. J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, A. G. YAGÜES MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A. F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B. O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D. S. ZOTKIN, Z. ZULKAPLI, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, SARTORELLI, GABRIELLA, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWAL, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, D. BARTSCH, M. BASILE, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, T. BOLD, E.G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, S.K. BOUTLE, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P.J. BUSSEY, J.M. BUTTERWORTH, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C.D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DE FAVEREAU, J. DEL PESO, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, D. DOBUR, B.A. DOLGOSHEIN, A.T. DOYLE, V. DRUGAKOV, L.S. DURKIN, S. DUSINI, Y. EISENBERG, P.F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M.I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, YU.A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA-BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, U. HOLM, R. HORI, K. HORTON, A. HÜTTMANN, G. IACOBUCCI, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H.-P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I.I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L.A. KHEIN, J.Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, D. KOLLAR, P. KOOIJMAN, IE.KOROL, I.A. KORZHAVINA, A. KOTA´NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, V.A. KUZMIN, A. LEE, B.B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T.Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, J.H. LOIZIDES, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, O.YU. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J.F. MARTIN, A. MASTROBERARDINO, T. MATSUMOTO, M.C.K. MATTINGLY, I.-A. MELZER-PELLMANN, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J.D. MORRIS, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, U. NOOR, D. NOTZ, R.J. NOWAK, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, YU. ONISHCHUK, O. OTA, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J.M. PAWLAK, B. PAWLIK, P.G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N.S. POKROVSKIY, A. POLINI, A.S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D.D. REEDER, B. REISERT, Z. REN, J. REPOND, Y.D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, G. SARTORELLI, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER-SADENIUS, J. SCHWARTZ, F. SCIULLI, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I.O. SKILLICORN, W. SLOMI´NSKI, W.H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T.P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE-ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, V. VIAZLO, N.N. VLASOV, O. VOLYNETS, R.WALCZAK, W.A.T. WAN ABDULLAH, J.J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H.WOLFE, K.WRONA, A.G. YAGÜES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B.O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D.S. ZOTKIN, Z. ZULKAPLI, Zeus (IHEF, IoP, FNWI), Precision Frontier, and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, HERA, FOS: Physical sciences, 01 natural sciences, JET FRAGMENTATION, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Cross section (physics), Positron, High Energy Physics, ZEUS Collaboration, 0103 physical sciences, EVENT GENERATOR, ddc:530, QCD ANALYSIS, 010306 general physics, PROTON COLLISIONS, EP INTERACTIONS, Engineering (miscellaneous), Charged current, Event generator, Physics, LEFT-RIGHT SYMMETRY, Luminosity (scattering theory), ZEUS (particle detector), 010308 nuclear & particles physics, ZEUS BARREL CALORIMETER, Deep inelastic scattering, CENTRAL TRACKING DETECTOR, PARTON DISTRIBUTIONS, High Energy Physics::Experiment, Atomic physics
Abstract: Measurements of the cross sections for charged current deep inelastic scattering in e+p collisions with a longitudinally polarised positron beam are presented. The measurements are based on a data sample with an integrated luminosity of 132 pb^-1 collected with the ZEUS detector at HERA at a centre-of-mass energy of 318 GeV. The total cross section is presented at positive and negative values of the longitudinal polarisation of the positron beams. The single-differential cross-sections ds/dQ^2, ds/dx and ds/dy are presented for Q^2 > 200 GeV^2. The reduced cross-section is presented in the kinematic range 200 < Q^2 < 60,000 GeV^2 and 0.006 < x < 0.562. The measurements agree well with the predictions of the Standard Model. The results are used to determine a lower limit on the mass of a hypothetical right-handed W boson., 33 pages, 11 figures, 7 tables
Published: 2016

14. Inclusive dijet cross sections in neutral current deep inelastic scattering at HERA

Author: H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWAL, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A. N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, D. BARTSCH, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, T. BOLD, E. G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, S. K. BOUTLE, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P. J. BUSSEY, J. M. BUTTERWORTH, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C. D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, F. CINDOLO, A. M. COOPER SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DE FAVEREAU, J. DEL PESO, R. K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R. C. E. DEVENISH, D. DOBUR, B. A. DOLGOSHEIN, A. T. DOYLE, V. DRUGAKOV, L. S. DURKIN, S. DUSINI, Y. EISENBERG, P. F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M. I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L. K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, Y.U. A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J. C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, U. HOLM, R. HORI, K. HORTON, A. HÜTTMANN, G. IACOBUCCI, Z. A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H. P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T. W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I. I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L. A. KHEIN, J. Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, D. KOLLAR, P. KOOIJMAN, I.E. KOROL, I. A. KORZHAVINA, A. KOTA´NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, V. A. KUZMIN, A. LEE, B. B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T. Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, J. H. LOIZIDES, K. R. LONG, A. LONGHIN, D. LONTKOVSKYI, O. Y.U. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J. F. MARTIN, A. MASTROBERARDINO, T. MATSUMOTO, M. C. K. MATTINGLY, I. A. MELZER PELLMANN, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J. D. MORRIS, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, U. NOOR, D. NOTZ, R. J. NOWAK, A. E. NUNCIO QUIROZ, B. Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, Y.U. ONISHCHUK, O. OTA, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J. M. PAWLAK, B. PAWLIK, P. G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N. S. POKROVSKIY, A. POLINI, A. S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D. D. REEDER, B. REISERT, Z. REN, J. REPOND, Y. D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, A. A. SAVIN, D. H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W. B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER SADENIUS, J. SCHWARTZ, F. SCIULLI, L. M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I. O. SKILLICORN, W. SLOMI´NSKI, W. H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T. P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK, D. SZUBA, J. SZUBA, A. D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, V. VIAZLO, N. N. VLASOV, O. VOLYNETS, R. WALCZAK, W. A. T. WAN ABDULLAH, J. J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, A. G. YAGÜES MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A. F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B. O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D. S. ZOTKIN, Z. ZULKAPLI, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, SARTORELLI, GABRIELLA, Precision Frontier, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWAL, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, D. BARTSCH, M. BASILE, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, T. BOLD, E.G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, S.K. BOUTLE, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P.J. BUSSEY, J.M. BUTTERWORTH, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C.D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DE FAVEREAU, J. DEL PESO, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, D. DOBUR, B.A. DOLGOSHEIN, A.T. DOYLE, V. DRUGAKOV, L.S. DURKIN, S. DUSINI, Y. EISENBERG, P.F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M.I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, YU.A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA-BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, U. HOLM, R. HORI, K. HORTON, A. HÜTTMANN, G. IACOBUCCI, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H.-P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I.I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L.A. KHEIN, J.Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, D. KOLLAR, P. KOOIJMAN, IE.KOROL, I.A. KORZHAVINA, A. KOTA´NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, V.A. KUZMIN, A. LEE, B.B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T.Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, J.H. LOIZIDES, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, O.YU. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J.F. MARTIN, A. MASTROBERARDINO, T. MATSUMOTO, M.C.K. MATTINGLY, I.-A. MELZER-PELLMANN, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J.D. MORRIS, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, U. NOOR, D. NOTZ, R.J. NOWAK, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, YU. ONISHCHUK, O. OTA, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J.M. PAWLAK, B. PAWLIK, P.G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N.S. POKROVSKIY, A. POLINI, A.S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D.D. REEDER, B. REISERT, Z. REN, J. REPOND, Y.D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, G. SARTORELLI, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER-SADENIUS, J. SCHWARTZ, F. SCIULLI, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I.O. SKILLICORN, W. SLOMI´NSKI, W.H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T.P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE-ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, V. VIAZLO, N.N. VLASOV, O. VOLYNETS, R.WALCZAK, W.A.T. WAN ABDULLAH, J.J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H.WOLFE, K.WRONA, A.G. YAGÜES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B.O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D.S. ZOTKIN, Z. ZULKAPLI, and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, Photon, MONTE-CARLO GENERATOR, Physics and Astronomy (miscellaneous), HERA, FOS: Physical sciences, COLOR DIPOLE MODEL, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, LEPTON-NUCLEON SCATTERING, 0103 physical sciences, ddc:530, Invariant mass, QCD ANALYSIS, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Quantum chromodynamics, Physics, Neutral current, 010308 nuclear & particles physics, Scattering, ZEUS BARREL CALORIMETER, Deep inelastic scattering, PHYSICS EVENT GENERATION, CENTRAL TRACKING DETECTOR, JET-PRODUCTION, PARTON DISTRIBUTIONS, High Energy Physics::Experiment, HADRON-COLLISIONS, Reference frame
Abstract: Single- and double-differential inclusive dijet cross sections in neutral current deep inelastic ep scattering have been measured with the ZEUS detector using an integrated luminosity of 374 pb^-1. The measurement was performed at large values of the photon virtuality, Q^2, between 125 and 20000 GeV^2. The jets were reconstructed with the k_T cluster algorithm in the Breit reference frame and selected by requiring their transverse energies in the Breit frame, E_T,B^jet, to be larger than 8 GeV. In addition, the invariant mass of the dijet system, M_jj, was required to be greater than 20 GeV. The cross sections are described by the predictions of next-to-leading-order QCD., 33 pages, 14 figures, 8 tables
Published: 2010

15. Studies of the diffractive photoproduction of isolated photons at HERA

Author: A. Bruni, Enrico Tassi, G. Grzelak, Claire Gwenlan, Marco Schioppa, Leszek Adamczyk, Masaki Ishitsuka, Yuji Yamazaki, Volodymyr Myronenko, Mykhailo Lisovyi, Uta Klein, P. Stopa, B. B. Levchenko, I. Abt, O. Yu. Lukina, J. Tomaszewska, A. Longhin, Robert Ciesielski, Allen Caldwell, Elisabetta Gallo, Yu. Onishchuk, Oleksii Turkot, Zainol Abidin Ibrahim, O. Behnke, T. Tymieniecka, Marcin Pawel Guzik, A. M. Cooper-Sarkar, I. A. Korzhavina, Shoichi Yamada, R.C.E. Devenish, T. Schörner-Sadenius, Yu. A. Golubkov, E. Paul, Achim Geiser, A. Kotański, Masahiro Kuze, I. Kadenko, J. Sztuk-Dambietz, Andrii Verbytskyi, Marta Ruspa, S. Antonelli, Andrii Gizhko, U. Karshon, Aharon Levy, Y. Iga, W. Perlanski, S. Kananov, V. Aushev, E. Lohrmann, M. Adamus, A. Garfagnini, Grzegorz Gach, Af Zarnecki, F. Mohamad Idris, W. Slominski, Ewelina Lobodzinska, N. Z. Jomhari, U. Schneekloth, R. Hori, B. Löhr, R. Brugnera, D. Hochman, Yu.O. Shyrma, N.S. Pokrovskiy, Ian Brock, L. M. Shcheglova, P. J. Bussey, Ada Solano, Nataliia Kovalchuk, B.O. Zhautykov, D. H. Saxon, B. Foster, S. Dusini, L. Stanco, A. Stern, N. Mohammad Nasir, Oleg Kuprash, L. K. Gladilin, O. Zenaiev, R. K. Dementiev, I. O. Skillicorn, Ingo Bloch, Nazar Stefaniuk, Anna Mastroberardino, N. H. Brook, Matthew Wing, Mariusz Przybycien, Danuta Kisielewska, M. Corradi, Ulf Behrens, H. Kowalski, K. Wichmann, W. A. T. Wan Abdullah, A. Bertolin, L. Zawiejski, M. Turcato, Kunihiro Nagano, P. Kaur, Katsuo Tokushuku, J. Malka, J. Ciborowski, Janusz Chwastowski, A. Polini, T. Tsurugai, Marcella Capua, Robert Klanner, C. D. Catterall, O. Shkola, B. Krupa, O. Hlushchenko, Halina Abramowicz, and Y. Aushev
Subjects: Photon, Physics and Astronomy (miscellaneous), diffraction, photon: photoproduction, transverse energy [photon], jet: transverse momentum, Jet (particle physics), transverse momentum [jet], 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Pomeron, photoproduction [photon], electron p, Nuclear Experiment, Monte Carlo, HERA, ZEUS, QCD, Photoproduction, Diffraction, colliding beams [electron p], photon: transverse energy, Physics, Luminosity (scattering theory), longitudinal momentum, Monte Carlo [numerical calculations], HERA, DESY HERA Stor, electron p: colliding beams, Photoproduction, kinematics, Pseudorapidity, rapidity [jet], numerical calculations: Monte Carlo, Diffraction, photoproduction, electron p: deep inelastic scattering, Particle physics, pomeron: interaction, diffraction: dissociation, FOS: Physical sciences, differential cross section: measured, Nuclear physics, measured [differential cross section], 0103 physical sciences, ddc:530, 010306 general physics, ZEUS (particle detector), rapidity [photon], 010308 nuclear & particles physics, High Energy Physics::Phenomenology, ZEUS, Deep inelastic scattering, QCD, rapidity, photon: rapidity, jet: rapidity, deep inelastic scattering [electron p], High Energy Physics::Experiment, dissociation [diffraction], interaction [pomeron], experimental results
Abstract: Physical review / D 96(3), 032006(2017). doi:10.1103/PhysRevD.96.032006, The photoproduction of isolated photons has been measured in diffractive events recorded by the ZEUS detector at HERA. Cross sections are evaluated in the photon transverse-energy and pseudorapidity ranges $5 < E_T < 15$ GeV and $-0.7 < \eta < 0.9,$ inclusively and also with a jet with transverse energy and pseudorapidity in the ranges $4 < E_{jet} < 35$ GeV and $-1.5 < \eta_{jet} < 1.8,$ using a total integrated electron-proton luminosity of 456 pb$^{-1}$. A number of kinematic variables were studied and compared to predictions from the Rapgap Monte Carlo model. An excess of data is observed above the Rapgap predictions for $z^{meas}_{Pomeron} > 0.9,$ where $z^{meas}_{Pomeron}$ is the fraction of the longitudinal momentum of the colourless 'Pomeron' exchange that is transferred to the photon-jet final state, giving evidence for direct Pomeron interactions., Published by Inst., Woodbury, NY
Published: 2017
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16. Search for stop production in R-parity-violating supersymmetry at HERA

Author: S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA, M. C. K. MATTINGLY, N. PAVEL, A. G. YAGÜES MOLINA, S. ANTONELLI, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, F. CINDOLO, M. CORRADI, S. DE PASQUALE, G. IACOBUCCI, A. MARGOTTI, R. NANIA, A. POLINI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, H. P. JAKOB, M. JÜNGST, O. M. KIND, E. PAUL, J. RAUTENBERG, R. RENNER, U. SAMSON, V. SCHÖNBERG, M. WANG, M. WLASENKO, N. H. BROOK, G. P. HEATH, J. D. MORRIS, T. NAMSOO, M. CAPUA, S. FAZIO, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J. Y. KIM, K. J. MA, Z. A. IBRAHIM, B. KAMALUDDIN, W. A. T. WAN ABDULLAH, Y. NING, Z. REN, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, M. GIL, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA BOLD, D. KISIELEWSKA, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, A. BONATO, K. BORRAS, N. COPPOLA, J. FOURLETOVA, A. GEISER, D. GLADKOV, P. GÖTTLICHER, I. GREGOR, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, U. KÖTZ, H. KOWALSKI, H. LIM, E. LOBODZINSKA, B. LÖHR, R. MANKEL, I. A. MELZER PELLMANN, A. MONTANARI, C. N. NGUYEN, D. NOTZ, A. E. NUNCIO QUIROZ, R. SANTAMARTA, U. SCHNEEKLOTH, H. STADIE, U. STÖSSLEIN, D. SZUBA, J. SZUBA, T. THEEDT, G. WATT, G. WOLF, K. WRONA, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, P. G. PELFER, A. BAMBERGER, D. DOBUR, F. KARSTENS, N. N. VLASOV, P. J. BUSSEY, A. T. DOYLE, W. DUNNE, J. FERRANDO, S. HANLON, D. H. SAXON, I. O. SKILLICORN, I. GIALAS, T. GOSAU, U. HOLM, R. KLANNER, E. LOHRMANN, H. SALEHI, P. SCHLEPER, T. SCHÖRNER SADENIUS, J. SZTUK, K. WICHMANN, K. WICK, C. FOUDAS, C. FRY, K. R. LONG, A. D. TAPPER, M. KATAOKA, T. MATSUMOTO, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A. N. BARAKBAEV, E. G. BOOS, A. DOSSANOV, N. S. POKROVSKIY, B. O. ZHAUTYKOV, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, M. JIMENEZ, L. LABARGA, J. DEL PESO, E. RON, J. TERRÓN, M. ZAMBRANA, F. CORRIVEAU, C. LIU, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, B. A. DOLGOSHEIN, I. RUBINSKY, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R. K. DEMENTIEV, P. F. ERMOLOV, L. K. GLADILIN, I. I. KATKOV, L. A. KHEIN, I. A. KORZHAVINA, V. A. KUZMIN, B. B. LEVCHENKO, O. Y.U. LUKINA, A. S. PROSKURYAKOV, L. M. SHCHEGLOVA, D. S. ZOTKIN, S. A. ZOTKIN, I. ABT, C. BÜTTNER, A. CALDWELL, D. KOLLAR, X. LIU, W. B. SCHMIDKE, J. SUTIAK, G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, N. BRÜMMER, B. BYLSMA, L. S. DURKIN, A. LEE, T. Y. LING, P. D. ALLFREY, M. A. BELL, A. M. COOPER SARKAR, A. COTTRELL, R. C. E. DEVENISH, B. FOSTER, C. GWENLAN, K. KORCSAK GORZO, S. PATEL, V. ROBERFROID, A. ROBERTSON, P. B. STRAUB, C. URIBE ESTRADA, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, R. CIESIELSKI, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, B. Y. OH, A. RAVAL, J. J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J. E. COLE, J. C. HART, H. ABRAMOWICZ, A. GABAREEN, R. INGBIR, S. KANANOV, A. LEVY, M. KUZE, R. HORI, S. KAGAWA, S. SHIMIZU, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, O. OTA, Y. D. RI, M. I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, J. F. MARTIN, J. M. BUTTERWORTH, R. HALL WILTON, T. W. JONES, J. H. LOIZIDES, M. R. SUTTON, C. TARGETT ADAMS, M. WING, B. BRZOZOWSKA, J. CIBOROWSKI, G. GRZELAK, P. KULINSKI, P. LUZNIAK, J. MALKA, R. J. NOWAK, J. M. PAWLAK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A. F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, I. GILLER, D. HOCHMAN, U. KARSHON, E. BROWNSON, T. DANIELSON, A. EVERETT, D. KÇIRA, D. D. REEDER, M. ROSIN, P. RYAN, A. A. SAVIN, W. H. SMITH, H. WOLFE, S. BHADRA, C. D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, M. SOARES, J. STANDAGE, J. WHYTE, BASILE, MAURIZIO, BINDI, MARCELLO, CIFARELLI, LUISA, CONTIN, ANDREA, RINALDI, LORENZO, SARTORELLI, GABRIELLA, S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, N. PAVEL, A.G. YAGÜES MOLINA, S. ANTONELLI, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, M. BINDI, D. BOSCHERINI, A. BRUNI, G. BRUNI, L. CIFARELLI, F. CINDOLO, A. CONTIN, M. CORRADI, S. DE PASQUALE, G. IACOBUCCI, A. MARGOTTI, R. NANIA, A. POLINI, L. RINALDI, G. SARTORELLI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, H.-P. JAKOB, M. JÜNGST, O.M. KIND, E. PAUL, J. RAUTENBERG, R. RENNER, U. SAMSON, V. SCHÖNBERG, M. WANG, M. WLASENKO, N.H. BROOK, G.P. HEATH, J.D. MORRIS, T. NAMSOO, M. CAPUA, S. FAZIO, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J.Y. KIM, K.J. MA, Z.A. IBRAHIM, B. KAMALUDDIN, W.A.T. WAN ABDULLAH, Y. NING, Z. REN, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, M. GIL, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA-BOLD, D. KISIELEWSKA, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, A. BONATO, K. BORRAS, N. COPPOLA, J. FOURLETOVA, A. GEISER, D. GLADKOV, P. GÖTTLICHER, I. GREGOR, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, U. KÖTZ, H. KOWALSKI, H. LIM, E. LOBODZINSKA, B. LÖHR, R. MANKEL, I.-A. MELZER-PELLMANN, A. MONTANARI, C.N. NGUYEN, D. NOTZ, A.E. NUNCIO-QUIROZ, R. SANTAMARTA, U. SCHNEEKLOTH, H. STADIE, U. STÖSSLEIN, D. SZUBA, J. SZUBA, T. THEEDT, G. WATT, G. WOLF, K. WRONA, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, P.G. PELFER, A. BAMBERGER, D. DOBUR, F. KARSTENS, N.N. VLASOV, P.J. BUSSEY, A.T. DOYLE, W. DUNNE, J. FERRANDO, S. HANLON, D.H. SAXON, I.O. SKILLICORN, I. GIALAS, T. GOSAU, U. HOLM, R. KLANNER, E. LOHRMANN, H. SALEHI, P. SCHLEPER, T. SCHÖRNER-SADENIUS, J. SZTUK, K. WICHMANN, K. WICK, C. FOUDAS, C. FRY, K.R. LONG, A.D. TAPPER, M. KATAOKA, T. MATSUMOTO, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, A. DOSSANOV, N.S. POKROVSKIY, B.O. ZHAUTYKOV, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, M. JIMENEZ, L. LABARGA, J. DEL PESO, E. RON, J. TERRÓN, M. ZAMBRANA, F. CORRIVEAU, C. LIU, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, B.A. DOLGOSHEIN, I. RUBINSKY, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R.K. DEMENTIEV, P.F. ERMOLOV, L.K. GLADILIN, I.I. KATKOV, L.A. KHEIN, I.A. KORZHAVINA, V.A. KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, D.S. ZOTKIN, S.A. ZOTKIN, I. ABT, C. BÜTTNER, A. CALDWELL, D. KOLLAR, X. LIU, W.B. SCHMIDKE, J. SUTIAK, G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, N. BRÜMMER, B. BYLSMA, L.S. DURKIN, A. LEE, T.Y. LING, P.D. ALLFREY, M.A. BELL, A.M. COOPER-SARKAR, A. COTTRELL, R.C.E. DEVENISH, B. FOSTER, C. GWENLAN, K. KORCSAK-GORZO, S. PATEL, V. ROBERFROID, A. ROBERTSON, P.B. STRAUB, C. URIBE-ESTRADA, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, R. CIESIELSKI, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, B.Y. OH, A. RAVAL, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J.E. COLE, J.C. HART, H. ABRAMOWICZ, A. GABAREEN, R. INGBIR, S. KANANOV, A. LEVY, M. KUZE, R. HORI, S. KAGAWA, S. SHIMIZU, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, O. OTA, Y.D. RI, M.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, J.F. MARTIN, J.M. BUTTERWORTH, R. HALL-WILTON, T.W. JONES, J.H. LOIZIDES, M.R. SUTTON, C. TARGETT-ADAMS, M. WING, B. BRZOZOWSKA, J. CIBOROWSKI, G. GRZELAK, P. KULINSKI, P. LUZNIAK, J. MALKA, R.J. NOWAK, J.M. PAWLAK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A.F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, I. GILLER, D. HOCHMAN, U. KARSHON, E. BROWNSON, T. DANIELSON, A. EVERETT, D. KÇIRA, D.D. REEDER, M. ROSIN, P. RYAN, A.A. SAVIN, W.H. SMITH, H. WOLFE, S. BHADRA, C.D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, M. SOARES, J. STANDAGE, and J. WHYTE
Subjects: Particle physics, MONTE-CARLO GENERATOR, Physics and Astronomy (miscellaneous), STANDARD MODEL, HERA, FOS: Physical sciences, Lambda, 01 natural sciences, JET FRAGMENTATION, DECAYS, High Energy Physics - Experiment, E(+)E(-) COLLISIONS, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, R-parity, 0103 physical sciences, SCATTERING, ddc:530, 010306 general physics, Engineering (miscellaneous), Physics, E+E-PHYSICS, 010308 nuclear & particles physics, Supergravity, High Energy Physics::Phenomenology, ZEUS BARREL CALORIMETER, Supersymmetry, PHYSICS EVENT GENERATION, Coupling (probability), PARTON DISTRIBUTIONS, Production (computer science), High Energy Physics::Experiment, Minimal Supersymmetric Standard Model
Abstract: A search for stop production in R-parity-violating supersymmetry has been performed in $e^{+}p$ interactions with the ZEUS detector at HERA, using an integrated luminosity of 65 pb$^{-1}$. At HERA, the R-parity-violating coupling $\lambda'$ allows resonant squark production, $e^+d\to\tilde{q}$. Since the lowest-mass squark state in most supersymmetry models is the light stop, $\tilde{t}$, this search concentrated on production of $\tilde{t}$, followed either by a direct R-parity-violating decay, or by the gauge decay to $b\tilde{\chi}^+_{1}$. No evidence for stop production was found and limits were set on $\lambda'_{131}$ as a function of the stop mass in the framework of the Minimal Supersymmetric Standard Model. The results have also been interpreted in terms of constraints on the parameters of the minimal Supergravity model., Comment: 24 pages, 11 figures, 1 table, Accepted by European Physical Journal C
Published: 2007

17. A novel calorimeter trigger concept: The jet trigger of the H1 experiment at HERA

Author: Burkard Reisert, Ana Dubak-Behrendt, A. Wassatsch, M. Fras, J. Zimmermann, B. Olivier, C. Kiesling, W. Fröchtenicht, H. Brettel, Juraj Bracinik, Miriam Modjesch, B. Dulny, J. Fent, A. Aktas, Biljana Antunović, T. Schörner-Sadenius, W. Haberer, Charles Braquet, Dirk Hoffmann, and R. Placakyte
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Jet (fluid), Large Hadron Collider, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Extended phase, HERA, Cluster algorithm, Nuclear physics, Upgrade, Liquid argon, High Energy Physics::Experiment, Instrumentation
Abstract: We report on a novel trigger for the liquid argon calorimeter which was installed in the H1 Experiment at HERA. This trigger, called the “Jet Trigger”, was running at level 1 and implemented a real-time cluster algorithm. Within only 800 ns, the Jet Trigger algorithm found local energy maxima in the calorimeter, summed their immediate neighbors, sorted the resulting jets by energy, and applied topological conditions for the final level 1 trigger decision. The Jet Trigger was in operation from the year 2006 until the end of the HERA running in the summer of 2007. With the Jet Trigger it was possible to substantially reduce the thresholds for triggering on electrons and jets, giving access to a largely extended phase space for physical observables which could not have been reached in H1 before. The concepts of the Jet Trigger may be an interesting upgrade option for the LHC experiments.
Published: 2011

18. Inclusive-jet cross sections in NC DIS at HERA and a comparison of the kT, anti-kT and SIScone jet algorithms

Author: H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, R. Aggarwal, S. Antonelli, P. Antonioli, A. Antonov, M. Arneodo, V. Aushev, Y. Aushev, O. Bachynska, A. Bamberger, A.N. Barakbaev, G. Barbagli, G. Bari, F. Barreiro, D. Bartsch, M. Basile, O. Behnke, J. Behr, U. Behrens, L. Bellagamba, A. Bertolin, S. Bhadra, M. Bindi, C. Blohm, T. Bołd, E.G. Boos, M. Borodin, K. Borras, D. Boscherini, D. Bot, S.K. Boutle, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, A. Bruni, G. Bruni, B. Brzozowska, P.J. Bussey, J.M. Butterworth, B. Bylsma, A. Caldwell, M. Capua, R. Carlin, C.D. Catterall, S. Chekanov, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, A.M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, G. D'Agostini, F. Dal Corso, J. de Favereau, J. del Peso, R.K. Dementiev, S. De Pasquale, M. Derrick, R.C.E. Devenish, D. Dobur, B.A. Dolgoshein, A.T. Doyle, V. Drugakov, L.S. Durkin, S. Dusini, Y. Eisenberg, P.F. Ermolov, A. Eskreys, S. Fang, S. Fazio, J. Ferrando, M.I. Ferrero, J. Figiel, M. Forrest, B. Foster, S. Fourletov, G. Gach, A. Galas, E. Gallo, A. Garfagnini, A. Geiser, I. Gialas, L.K. Gladilin, D. Gladkov, C. Glasman, O. Gogota, Yu.A. Golubkov, P. Göttlicher, I. Grabowska-Bołd, J. Grebenyuk, I. Gregor, G. Grigorescu, G. Grzelak, C. Gwenlan, T. Haas, W. Hain, R. Hamatsu, J.C. Hart, H. Hartmann, G. Hartner, E. Hilger, D. Hochman, U. Holm, R. Hori, K. Horton, A. Hüttmann, G. Iacobucci, Z.A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, H.-P. Jakob, F. Januschek, M. Jimenez, T.W. Jones, M. Jüngst, I. Kadenko, B. Kahle, B. Kamaluddin, S. Kananov, T. Kanno, U. Karshon, F. Karstens, I.I. Katkov, M. Kaur, P. Kaur, A. Keramidas, L.A. Khein, J.Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, U. Klein, E. Koffeman, D. Kollar, P. Kooijman, Ie. Korol, I.A. Korzhavina, A. Kotański, U. Kötz, H. Kowalski, P. Kulinski, O. Kuprash, M. Kuze, V.A. Kuzmin, A. Lee, B.B. Levchenko, A. Levy, V. Libov, S. Limentani, T.Y. Ling, M. Lisovyi, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, J.H. Loizides, K.R. Long, A. Longhin, D. Lontkovskyi, O.Yu. Lukina, P. Łużniak, J. Maeda, S. Magill, I. Makarenko, J. Malka, R. Mankel, A. Margotti, G. Marini, J.F. Martin, A. Mastroberardino, T. Matsumoto, M.C.K. Mattingly, I.-A. Melzer-Pellmann, S. Miglioranzi, F. Mohamad Idris, V. Monaco, A. Montanari, J.D. Morris, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, D. Nicholass, A. Nigro, Y. Ning, U. Noor, D. Notz, R.J. Nowak, A.E. Nuncio-Quiroz, B.Y. Oh, N. Okazaki, K. Oliver, K. Olkiewicz, Yu. Onishchuk, O. Ota, K. Papageorgiu, A. Parenti, E. Paul, J.M. Pawlak, B. Pawlik, P.G. Pelfer, A. Pellegrino, W. Perlanski, H. Perrey, K. Piotrzkowski, P. Plucinski, N.S. Pokrovskiy, A. Polini, A.S. Proskuryakov, M. Przybycień, A. Raval, D.D. Reeder, B. Reisert, Z. Ren, J. Repond, Y.D. Ri, A. Robertson, P. Roloff, E. Ron, I. Rubinsky, M. Ruspa, R. Sacchi, A. Salii, U. Samson, G. Sartorelli, A.A. Savin, D.H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W.B. Schmidke, U. Schneekloth, V. Schönberg, T. Schörner-Sadenius, J. Schwartz, F. Sciulli, L.M. Shcheglova, R. Shehzadi, S. Shimizu, I. Singh, I.O. Skillicorn, W. Słomiński, W.H. Smith, V. Sola, A. Solano, D. Son, V. Sosnovtsev, A. Spiridonov, H. Stadie, L. Stanco, A. Stern, T.P. Stewart, A. Stifutkin, P. Stopa, S. Suchkov, G. Susinno, L. Suszycki, J. Sztuk, D. Szuba, J. Szuba, A.D. Tapper, E. Tassi, J. Terrón, T. Theedt, H. Tiecke, K. Tokushuku, O. Tomalak, J. Tomaszewska, T. Tsurugai, M. Turcato, T. Tymieniecka, C. Uribe-Estrada, M. Vázquez, A. Verbytskyi, V. Viazlo, N.N. Vlasov, O. Volynets, R. Walczak, W.A.T. Wan Abdullah, J.J. Whitmore, J. Whyte, L. Wiggers, M. Wing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, A.G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, A.F. Żarnecki, L. Zawiejski, O. Zenaiev, W. Zeuner, B.O. Zhautykov, N. Zhmak, C. Zhou, A. Zichichi, M. Zolko, D.S. Zotkin, and Z. Zulkapli
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Jet (fluid), ZEUS (particle detector), 010308 nuclear & particles physics, Elementary particle, HERA, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Particle identification, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Algorithm
Abstract: For the first time, differential inclusive-jet cross sections have been measured in neutral current deep inelastic ep scattering using the anti-k(T) and SIScone algorithms. The measurements were made for boson virtualities Q(2) > 125 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 82 pb(-1) and the jets were identified in the Breit frame. The performance and suitability of the jet algorithms for their use in hadron-like reactions were investigated by comparing the measurements to those performed with the k(T) algorithm. Next-to-leading-order QCD calculations give a good description of the measurements. Measurements of the ratios of cross sections using different jet algorithms are also presented; the measured ratios are well described by calculations including up to O(alpha(3)(s)) terms. Values of alpha(s)(M-z) were extracted from the data; the results are compatible with and have similar precision to the value extracted from the kT analysis. (C) 2010 Elsevier B.V. All rights reserved.
Published: 2010

19. Search for invisibly decaying Higgs bosons in e+e−→Z0h0 production at s=183–209 GeV

Author: A. J. Martin, M. Ford, M. Boutemeur, F. S. Merritt, D. E. Plane, P. Scharff-Hansen, J. von Krogh, W. Mader, R. J. Hawkings, A. Harel, Ikuo Ueda, D. M. Strom, J. Lu, Ehud Duchovni, A. M. Smith, J. A. McKenna, Kiyotomo Kawagoe, Daniel Lellouch, Tara Shears, A. Michelini, J. Dubbert, Robert Vertesi, R. K. Carnegie, J. A. Wilson, Takehiko Mori, M. Schumacher, Gideon Bella, Andris Skuja, Robert McPherson, T. Kobayashi, M. Przybycień, A. Ludwig, A. D. Schaile, Gabriella Pasztor, D. Axen, A. A. Carter, Richard Teuscher, Oana Elena Vickey Boeriu, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, P. J. Bell, H. J. Burckhart, R. M. Brown, T. R. Junk, Tetsuro Mashimo, M. F. Turner-Watson, P. Vannerem, Fabrizio Fabbri, A. Frey, E. A. De Wolf, F. Spano, P. S. Wells, Lorne Levinson, Peter Sherwood, Terry Richard Wyatt, A. T. Watson, J. Lillich, Matthias Schröder, B. W. Kennedy, C. P. Ward, G. W. Wilson, I. R. Bailey, P. Jovanovic, Christoph Geich-Gimbel, J. Ludwig, M. Hauschild, M. Hamann, N. Meyer, Klaus Rabbertz, L. Zivkovic, K. Runge, P. Bock, Peter Krieger, J. M. Roney, S. Söldner-Rembold, S. W. O'Neale, W. Menges, Otmar Biebel, M. Kupper, H. Nanjo, R. J. Sobie, Stephen Lloyd, Joost Vossebeld, Oliver Pooth, Klaus Desch, T. Schörner-Sadenius, Koichi Nagai, C. F. Vollmer, Attila Krasznahorkay, E. Torrence, A. Gupta, Yoram Rozen, W. Mohr, H. Mes, I. P. Duerdoth, Shlomo Dado, Jochen Schieck, K. J. Anderson, Thorsten Wengler, T. Behnke, D. J. Miller, G. Mikenberg, Norbert Wermes, Junichi Kanzaki, James Pinfold, A. Quadt, R. Seuster, M. A. Thomson, Marco Cuffiani, Gideon Alexander, Paolo Capiluppi, T. Kawamoto, E. K. U. Gross, R. J. Batley, Dave Charlton, H. Voss, R. J. Barlow, S. Orito, H. Landsman, C. Y. Chang, Teresa Barillari, Satoru Yamashita, Gabriele Benelli, P. Gagnon, A. Csilling, R. D. Heuer, M. J. Oreglia, E. L. Barberio, S. Braibant, E. Tsur, C. M. Hawkes, Zoltan Laszlo Trocsanyi, Isabel Marian Trigger, K. W. Bell, P. Mättig, Shoji Asai, Gregor Herten, J. C. Hill, Balazs Ujvari, Tobias Kramer, J. E. Pilcher, B. C. Shen, Siegfried Bethke, I. Nakamura, J. W. Gary, Raimund Ströhmer, Marek Tasevsky, Dezso Horvath, R. G. Kellogg, Beatrix Dienes, Alexander Oh, D. Lanske, Csaba Hajdu, J. Goldberg, Stefano Marcellini, Christoph Rembser, Gunter Wolf, James Letts, D. Karlen, D. Zer-Zion, F. K. Loebinger, Erez Etzion, Ivor Fleck, Stefan Kluth, Shlomit Tarem, Joleen Pater, M. Giunta, Edward K. G. Sarkisyan, D. Toya, H. A. Neal, Sachio Komamiya, M. Gruwe, T. Saeki, A. Mutter, J. Grunhaus, Gordon H. Hanson, G. Giacomelli, A. De Roeck, M. Kobel, Frans Meijers, Alain Bellerive, P. Igo-Kemenes, K. Ishii, H. Jeremie, G. Anagnostou, O. Schaile, T. Kuhl, Pamela Ferrari, Paolo Giacomelli, Claudia Ciocca, K. Sachs, J. R. Carter, Philip Bechtle, N. K. Watson, Achim Stahl, C. Ainsley, C. Pahl, A. M. Rossi, G. D. Lafferty, R. K. Keeler, P. M. Watkins, P. Renkel, S. Campana, Guenter Duckeck, Satoshi Mihara, Frank Fiedler, and D. R. Ward
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Elementary particle, 01 natural sciences, Standard Model, Vector boson, Nuclear physics, 0103 physical sciences, Neutralino, Higgs boson, High Energy Physics::Experiment, 010306 general physics, Minimal Supersymmetric Standard Model, Boson
Abstract: A search is performed for Higgs bosons decaying into invisible final states, produced in association with a Z(0) boson in e(+)e(-) collisions at energies between 183 and 209 GeV. The search is based on data samples collected by the OPAL detector at LEP corresponding to an integrated luminosity of about 660 pb(-1). The analysis aims to select events containing the hadronic decay products of the Z(0) boson and large missing momentum, as expected from Higgs boson decay into a pair of stable weakly interacting neutral particles, such as the lightest neutralino in the Minimal Supersymmetric Standard Model. The same analysis is applied to a search for nearly invisible Higgs boson cascade decays into stable weakly interacting neutral particles. No excess over the expected background from Standard Model processes is observed. Limits on the production of invisibly decaying Higgs bosons produced in association with a Z(0) boson are derived. Assuming a branching ratio BR(h(0) -> invisible) = 1, a lower limit of 108.2 GeV is placed on the Higgs boson mass at the 95% confidence level. Limits on the production of nearly invisibly decaying Higgs bosons are also obtained. (C) 2009 Elsevier B.V. All rights reserved.
Published: 2010

20. Deep inelastic inclusive and diffractive scattering at Q2 values from 25 to 320 GeV2 with the ZEUS forward plug calorimeter

Author: S. Chekanov, M. Derrick, S. Magill, B. Musgrave, D. Nicholass, J. Repond, R. Yoshida, M.C.K. Mattingly, M. Jechow, N. Pavel, P. Antonioli, G. Bari, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, F. Cindolo, M. Corradi, G. Iacobucci, A. Margotti, R. Nania, A. Polini, S. Antonelli, M. Basile, M. Bindi, L. Cifarelli, A. Contin, S. De Pasquale, G. Sartorelli, A. Zichichi, D. Bartsch, I. Brock, H. Hartmann, E. Hilger, H.-P. Jakob, M. Jüngst, A.E. Nuncio-Quiroz, E. Paul, R. Renner, U. Samson, V. Schönberg, R. Shehzadi, M. Wlasenko, N.H. Brook, G.P. Heath, J.D. Morris, M. Capua, S. Fazio, A. Mastroberardino, M. Schioppa, G. Susinno, E. Tassi, J.Y. Kim, Z.A. Ibrahim, B. Kamaluddin, W.A.T. Wan Abdullah, Y. Ning, Z. Ren, F. Sciulli, J. Chwastowski, A. Eskreys, J. Figiel, A. Galas, M. Gil, K. Olkiewicz, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bołd, I. Grabowska-Bołd, D. Kisielewska, J. Łukasik, M. Przybycień, L. Suszycki, A. Kotański, W. Słomiński, U. Behrens, C. Blohm, A. Bonato, K. Borras, R. Ciesielski, N. Coppola, V. Drugakov, S. Fang, J. Fourletova, A. Geiser, P. Göttlicher, J. Grebenyuk, I. Gregor, T. Haas, W. Hain, A. Hüttmann, B. Kahle, M. Kasemann, I.I. Katkov, U. Klein, U. Kötz, H. Kowalski, H. Lim, E. Lobodzinska, B. Löhr, R. Mankel, I.-A. Melzer-Pellmann, S. Miglioranzi, A. Montanari, T. Namsoo, D. Notz, A. Parenti, L. Rinaldi, P. Roloff, I. Rubinsky, R. Santamarta, U. Schneekloth, A. Spiridonov, D. Szuba, J. Szuba, T. Theedt, G. Wolf, K. Wrona, A.G. Yagües Molina, C. Youngman, W. Zeuner, W. Lohmann, S. Schlenstedt, G. Barbagli, E. Gallo, P.G. Pelfer, A. Bamberger, D. Dobur, F. Karstens, N.N. Vlasov, P.J. Bussey, A.T. Doyle, W. Dunne, M. Forrest, M. Rosin, D.H. Saxon, I.O. Skillicorn, I. Gialas, K. Papageorgiu, U. Holm, R. Klanner, E. Lohrmann, P. Schleper, T. Schörner-Sadenius, J. Sztuk, H. Stadie, M. Turcato, C. Foudas, C. Fry, K.R. Long, A.D. Tapper, T. Matsumoto, K. Nagano, K. Tokushuku, S. Yamada, Y. Yamazaki, A.N. Barakbaev, E.G. Boos, N.S. Pokrovskiy, B.O. Zhautykov, V. Aushev, M. Borodin, A. Kozulia, M. Lisovyi, D. Son, J. de Favereau, K. Piotrzkowski, F. Barreiro, C. Glasman, M. Jimenez, L. Labarga, J. del Peso, E. Ron, M. Soares, J. Terrón, M. Zambrana, F. Corriveau, C. Liu, J. Schwartz, R. Walsh, C. Zhou, T. Tsurugai, A. Antonov, B.A. Dolgoshein, D. Gladkov, V. Sosnovtsev, A. Stifutkin, S. Suchkov, R.K. Dementiev, P.F. Ermolov, L.K. Gladilin, Yu.A. Golubkov, L.A. Khein, I.A. Korzhavina, V.A. Kuzmin, B.B. Levchenko, O.Yu. Lukina, A.S. Proskuryakov, L.M. Shcheglova, D.S. Zotkin, I. Abt, C. Büttner, A. Caldwell, D. Kollar, B. Reisert, W.B. Schmidke, J. Sutiak, G. Grigorescu, A. Keramidas, E. Koffeman, P. Kooijman, A. Pellegrino, H. Tiecke, M. Vázquez, L. Wiggers, N. Brümmer, B. Bylsma, L.S. Durkin, A. Lee, T.Y. Ling, P.D. Allfrey, M.A. Bell, A.M. Cooper-Sarkar, R.C.E. Devenish, J. Ferrando, B. Foster, K. Korcsak-Gorzo, K. Oliver, S. Patel, V. Roberfroid, A. Robertson, P.B. Straub, C. Uribe-Estrada, R. Walczak, A. Bertolin, F. Dal Corso, S. Dusini, A. Longhin, L. Stanco, P. Bellan, R. Brugnera, R. Carlin, A. Garfagnini, S. Limentani, B.Y. Oh, A. Raval, J. Ukleja, J.J. Whitmore, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, J.E. Cole, J.C. Hart, A. Gabareen, R. Ingbir, S. Kananov, O. Smith, A. Stern, M. Kuze, J. Maeda, R. Hori, S. Kagawa, N. Okazaki, S. Shimizu, T. Tawara, R. Hamatsu, H. Kaji, S. Kitamura, O. Ota, Y.D. Ri, M. Costa, M.I. Ferrero, V. Monaco, R. Sacchi, A. Solano, M. Arneodo, M. Ruspa, S. Fourletov, J.F. Martin, T.P. Stewart, S.K. Boutle, J.M. Butterworth, C. Gwenlan, T.W. Jones, J.H. Loizides, M. Wing, B. Brzozowska, J. Ciborowski, G. Grzelak, P. Kulinski, P. Łużniak, J. Malka, R.J. Nowak, J.M. Pawlak, T. Tymieniecka, A. Ukleja, A.F. Żarnecki, M. Adamus, P. Plucinski, Y. Eisenberg, D. Hochman, U. Karshon, E. Brownson, T. Danielson, A. Everett, D. Kçira, D.D. Reeder, P. Ryan, A.A. Savin, W.H. Smith, H. Wolfe, S. Bhadra, C.D. Catterall, Y. Cui, G. Hartner, S. Menary, U. Noor, J. Standage, and J. Whyte
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, Proton, 010308 nuclear & particles physics, Scattering, HERA, Deep inelastic scattering, 01 natural sciences, Nuclear physics, Pomeron, Factorization, 0103 physical sciences, Twist, 010306 general physics
Abstract: Deep inelastic scattering and its diffractive component, ep {yields} e{prime} {gamma}* p {yields} e{prime} XN, have been studied at HERA with the ZEUS detector using an integrated luminosity of 52.4 pb{sup -1}. The M{sub X} method has been used to extract the diffractive contribution. A wide range in the center-of-mass energy W(37-245 GeV), photon virtuality Q{sup 2} (20-450 GeV{sup 2}) and mass M{sub X} (0.28-35 GeV) is covered. The diffractive cross section for 2 < M{sub X} < 15 GeV rises strongly with W, the rise becoming steeper as Q{sup 2} increases. The data are also presented in terms of the diffractive structure function, F{sub 2}{sup D(3)}, of the proton. For fixed Q{sup 2} and fixed M{sub X}, xpF{sub 2}{sup D(3)} shows a strong rise as xP {yields} 0, where xp is the fraction of the proton momentum carried by the pomeron. For Bjorken-x < 1 x 10{sup -3}, xpF{sub 2}{sup D(3)} shows positive logQ{sup 2} scaling violations, while for X {ge} 5 x 10{sup -3} negative scaling violations are observed. The diffractive structure function is compatible with being leading twist. The data show that Regge factorization is broken.
Published: 2008

21. Search for Dirac magnetic monopoles in e+e− collisions with the OPAL detector at LEP2

Author: M. Ford, P. Igo-Kemenes, W. Menges, Otmar Biebel, Achim Stahl, J. von Krogh, K. Ishii, H. Jeremie, Kiyotomo Kawagoe, Yoram Rozen, David J. Miller, M. Boutemeur, F. S. Merritt, S. Campana, Sachio Komamiya, R. J. Hawkings, B. C. Shen, H. Landsman, M. Gruwe, O. Schaile, Norbert Wermes, J. A. McKenna, T. Kawamoto, Oliver Pooth, D. Zer-Zion, F. K. Loebinger, Junichi Kanzaki, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, D. Toya, H. A. Neal, Andris Skuja, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, T. Kuhl, Siegfried Bethke, Alain Bellerive, S. W. O'Neale, Gordon H. Hanson, Gideon Bella, S. Orito, Daniel Lellouch, H. Mes, E. L. Barberio, Paolo Giacomelli, Takehiko Mori, T. Saeki, H. J. Burckhart, Christoph Geich-Gimbel, I. Nakamura, I. P. Duerdoth, Gideon Alexander, A. D. Schaile, D. Axen, J. Dubbert, Robert Vertesi, R. K. Carnegie, A. J. Martin, Paolo Capiluppi, Tetsuro Mashimo, M. F. Turner-Watson, J. W. Gary, Oana Elena Vickey Boeriu, Gabriella Pasztor, P. Vannerem, J. A. Wilson, A. Krasznahorkay, F. Spano, G. Mikenberg, Guenter Duckeck, K. J. Anderson, Peter Sherwood, Lorne Levinson, D. R. Ward, Thorsten Wengler, Raimund Ströhmer, J. Lillich, Richard Teuscher, N. Meyer, P. Mättig, Teresa Barillari, B. W. Kennedy, I. R. Bailey, Marek Tasevsky, A. Csilling, M. J. Oreglia, J. Letts, J. Ludwig, K. Runge, P. Jovanovic, R. J. Batley, M. Kupper, P. Bock, T. R. Wyatt, S. Braibant, C. P. Ward, N. K. Watson, C. Pahl, Dezso Horvath, J. Grunhaus, Gunter Wolf, Peter Krieger, D. E. Plane, Shoji Asai, W. Mader, M. Schumacher, S. Söldner-Rembold, M. Przybycień, Klaus Rabbertz, T. R. Junk, A. A. Carter, G. M. Dallavalle, D. Karlen, J. M. Roney, E. A. De Wolf, Stephen Lloyd, C. Ainsley, P. S. Wells, Tara Shears, M. Verzocchi, G. Giacomelli, A. M. Rossi, P. F. Åkesson, Giovanni Abbiendi, A. T. Watson, P. Scharff-Hansen, L. Zivkovic, Dave Charlton, P. Gagnon, A. De Roeck, M. Kobel, Gabriele Benelli, Koichi Nagai, Shlomo Dado, W. Mohr, A. Mutter, Ehud Duchovni, Robert McPherson, R. M. Brown, P. M. Watkins, Zoltan Laszlo Trocsanyi, Frans Meijers, A. Harel, Fabrizio Fabbri, A. Frey, George Lafferty, A. M. Smith, Satoshi Mihara, A. Michelini, Ikuo Ueda, D. M. Strom, E. Torrence, A. Gupta, P. Renkel, R. D. Heuer, T. Kobayashi, J. Lu, M. Cozzi, Gregor Herten, A. Ludwig, John Hill, James Pinfold, A. Quadt, R. Seuster, Claudia Ciocca, Beatrix Dienes, K. Sachs, J. R. Carter, J. Goldberg, Philip Bechtle, Frank Fiedler, M. Hamann, G. Anagnostou, Balazs Ujvari, J. E. Pilcher, Richard Keeler, Pamela Ferrari, G. W. Wilson, R. J. Sobie, M. Hauschild, C. Y. Chang, Joost Vossebeld, M. A. Thomson, E. K. U. Gross, H. Voss, Klaus Desch, Satoru Yamashita, Matthias Schröder, E. Tsur, C. M. Hawkes, Christoph Rembser, T. Behnke, Isabel Marian Trigger, K. W. Bell, Erez Etzion, T. Schörner-Sadenius, Stefan Kluth, Shlomit Tarem, Tobias Kramer, M. Giunta, P. J. Bell, M. Cuffiani, H. Nanjo, C. F. Vollmer, Jochen Schieck, R. J. Barlow, Alexander Oh, and D. Lanske
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), 010308 nuclear & particles physics, Dirac (video compression format), Electron–positron annihilation, Magnetic monopole, Tracking (particle physics), 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Ionization energy, 010306 general physics, Event generator
Abstract: This Letter describes a direct search for pair produced magnetic monopoles in e(+)e(-) collisions. The analysis is based on 62.7 pb(-1) of data collected with the OPAL detector at an average centre-of-mass energy of root S = 206.3 GeV. The monopole signal was assumed to be characterized by two back-to-back particles with an anomalously high ionization energy loss dE/dx in the tracking chambers. No evidence for production of monopoles was observed. Upper limits were obtained on the magnetic monopole pair-production cross-section (sigma) in the mass range 45 GeV/c(2) < m(M) < 102 GeV/c(2). The average limit is sigma < 0.05 pb and is essentially independent of the magnetic monopole mass. The cross-section limit is derived at the 95% confidence level and is valid for spin-1/2 magnetic monopoles. (C) 2008 Published by Elsevier B.V.
Published: 2008

22. Inclusive jet production in photon–photon collisions at see from 189 to 209 GeV

Author: George Lafferty, Erez Etzion, Satoshi Mihara, Thorsten Wengler, Stefan Kluth, Shlomit Tarem, Klaus Rabbertz, Frank Fiedler, Dave Charlton, M. Ford, Stephen Lloyd, A. Harel, J. Lillich, Kiyotomo Kawagoe, Ikuo Ueda, D. M. Strom, S. Campana, B. W. Kennedy, M. Giunta, P. Jovanovic, C. Y. Chang, J. Lu, Peter Krieger, D. R. Ward, J. von Krogh, M. Schumacher, P. J. Bell, Shlomo Dado, Ehud Duchovni, D. Zer-Zion, D. E. Plane, Christoph Geich-Gimbel, R. D. Heuer, Gabriele Benelli, F. K. Loebinger, A. Michelini, P. Scharff-Hansen, R. J. Hawkings, T. Schörner-Sadenius, E. A. De Wolf, Gideon Bella, Ivor Fleck, E. Tsur, Gunter Wolf, Joleen Pater, Sachio Komamiya, C. M. Hawkes, H. J. Burckhart, Edward K. G. Sarkisyan, D. Toya, T. Kobayashi, A. Ludwig, Isabel Marian Trigger, K. W. Bell, D. Karlen, H. A. Neal, L. Zivkovic, Pamela Ferrari, H. Nanjo, A. M. Smith, D. J. Miller, A. D. Schaile, Gabriella Pasztor, P. Igo-Kemenes, M. Przybycień, P. Vannerem, J. C. Hill, Tara Shears, Gregor Herten, Richard Teuscher, Tobias Kramer, B. C. Shen, T. R. Junk, A. A. Carter, K. Ishii, H. Jeremie, C. P. Ward, M. Gruwe, Andris Skuja, S. W. O'Neale, E. Torrence, A. Gupta, Siegfried Bethke, H. Mes, P. S. Wells, A. Csilling, S. Söldner-Rembold, Oliver Pooth, C. F. Vollmer, M. Boutemeur, F. S. Merritt, Jochen Schieck, J. M. Roney, Gideon Alexander, Tetsuro Mashimo, M. F. Turner-Watson, Balazs Ujvari, J. Goldberg, J. E. Pilcher, R. K. Keeler, N. K. Watson, Koichi Nagai, H. Landsman, T. R. Wyatt, I. P. Duerdoth, K. J. Anderson, A. T. Watson, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, I. Nakamura, J. W. Gary, W. Mohr, O. Schaile, N. Meyer, R. J. Barlow, Paolo Capiluppi, Paolo Giacomelli, M. Kupper, M. Hamann, Raimund Ströhmer, G. Mikenberg, G. W. Wilson, M. Hauschild, T. Behnke, P. Mättig, Marek Tasevsky, P. M. Watkins, T. Kuhl, E. L. Barberio, J. A. McKenna, Dezso Horvath, M. A. Thomson, J. Dubbert, Robert Vertesi, R. K. Carnegie, Robert McPherson, R. M. Brown, Lorne Levinson, Christoph Rembser, E. K. U. Gross, H. Voss, Daniel Lellouch, Marco Cuffiani, Takehiko Mori, P. Renkel, R. J. Batley, R. J. Sobie, J. A. Wilson, I. R. Bailey, R. G. Kellogg, Satoru Yamashita, James Pinfold, Joost Vossebeld, A. Quadt, R. Seuster, C. Ainsley, Fabrizio Fabbri, Klaus Desch, A. Frey, Guenter Duckeck, A. M. Rossi, A. J. Martin, Csaba Hajdu, Stefano Marcellini, Alain Bellerive, A. Krasznahorkay, W. Mader, J. Letts, C. Pahl, T. Saeki, Alexander Oh, G. Anagnostou, D. Lanske, Gordon H. Hanson, Claudia Ciocca, Achim Stahl, K. Sachs, J. R. Carter, Philip Bechtle, G. Giacomelli, A. Mutter, A. De Roeck, M. Kobel, Frans Meijers, Yoram Rozen, J. Grunhaus, Junichi Kanzaki, Teresa Barillari, B. Dienes, Shoji Asai, D. Axen, Oana Elena Vickey Boeriu, F. Spano, Peter Sherwood, J. Ludwig, K. Runge, P. Bock, P. Gagnon, Zoltan Laszlo Trocsanyi, W. Menges, Otmar Biebel, Norbert Wermes, T. Kawamoto, S. Orito, M. J. Oreglia, S. Braibant, and Matthias Schröder
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Jet (fluid), Photon, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Perturbative QCD, 01 natural sciences, Nuclear physics, Pair production, 0103 physical sciences, Strong coupling, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Event generator
Abstract: Inclusive jet production (e(+)e(-) -> e(+)e(-) + jet + X) is studied in collisions of quasi-real photons radiated by the LEP beams at e(+)e(-) centre-of-mass energies root s(ee) from 189 to 209 GeV. Jets are reconstructed using the k(perpendicular to) jet algorithm. The inclusive differential cross-section is measured as a function of the jet transverse momentum, p(T)(jet), in the range 5 < p(T)(jet) < 40 GeV for pseudo-rapidities, eta(jet), in the range - 1.5 < eta(jet) < 1.5. The results are compared to predictions of perturbative QCD in next-to-leading order in the strong coupling constant. (c) 2007 Elsevier B.V. All rights reserved.
Published: 2008

23. Measurement of meson production in scattering at low

Author: S. Chekanov, M. Derrick, S. Magill, S. Miglioranzi, B. Musgrave, D. Nicholass, J. Repond, R. Yoshida, M.C.K. Mattingly, M. Jechow, N. Pavel, A.G. Yagües Molina, S. Antonelli, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, M. Bindi, D. Boscherini, A. Bruni, G. Bruni, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, G. Iacobucci, A. Margotti, R. Nania, A. Polini, L. Rinaldi, G. Sartorelli, A. Zichichi, D. Bartsch, I. Brock, S. Goers, H. Hartmann, E. Hilger, P. Irrgang, H.-P. Jakob, M. Jüngst, O.M. Kind, E. Paul, R. Renner, U. Samson, V. Schönberg, R. Shehzadi, M. Wlasenko, N.H. Brook, G.P. Heath, J.D. Morris, T. Namsoo, M. Capua, S. Fazio, A. Mastroberardino, M. Schioppa, G. Susinno, E. Tassi, J.Y. Kim, K.J. Ma, Z.A. Ibrahim, B. Kamaluddin, W.A.T. Wan Abdullah, Y. Ning, Z. Ren, F. Sciulli, J. Chwastowski, A. Eskreys, J. Figiel, A. Galas, M. Gil, K. Olkiewicz, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bołd, I. Grabowska-Bołd, D. Kisielewska, J. Łukasik, M. Przybycień, L. Suszycki, A. Kotański, W. Słomiński, V. Adler, U. Behrens, I. Bloch, C. Blohm, A. Bonato, K. Borras, N. Coppola, A. Dossanov, J. Fourletova, A. Geiser, D. Gladkov, P. Göttlicher, I. Gregor, T. Haas, W. Hain, C. Horn, B. Kahle, U. Klein, U. Kötz, H. Kowalski, E. Lobodzinska, B. Löhr, R. Mankel, I.-A. Melzer-Pellmann, A. Montanari, D. Notz, A.E. Nuncio-Quiroz, I. Rubinsky, R. Santamarta, U. Schneekloth, A. Spiridonov, H. Stadie, D. Szuba, J. Szuba, T. Theedt, G. Wolf, K. Wrona, C. Youngman, W. Zeuner, W. Lohmann, S. Schlenstedt, G. Barbagli, E. Gallo, P.G. Pelfer, A. Bamberger, D. Dobur, F. Karstens, N.N. Vlasov, P.J. Bussey, A.T. Doyle, W. Dunne, J. Ferrando, D.H. Saxon, I.O. Skillicorn, I. Gialas, T. Gosau, U. Holm, R. Klanner, E. Lohrmann, H. Salehi, P. Schleper, T. Schörner-Sadenius, J. Sztuk, K. Wichmann, K. Wick, C. Foudas, C. Fry, K.R. Long, A.D. Tapper, M. Kataoka, T. Matsumoto, K. Nagano, K. Tokushuku, S. Yamada, Y. Yamazaki, A.N. Barakbaev, E.G. Boos, N.S. Pokrovskiy, B.O. Zhautykov, D. Son, J. de Favereau, K. Piotrzkowski, F. Barreiro, C. Glasman, M. Jimenez, L. Labarga, J. del Peso, E. Ron, M. Soares, J. Terrón, M. Zambrana, F. Corriveau, C. Liu, R. Walsh, C. Zhou, T. Tsurugai, A. Antonov, B.A. Dolgoshein, V. Sosnovtsev, A. Stifutkin, S. Suchkov, R.K. Dementiev, P.F. Ermolov, L.K. Gladilin, I.I. Katkov, L.A. Khein, I.A. Korzhavina, V.A. Kuzmin, B.B. Levchenko, O.Yu. Lukina, A.S. Proskuryakov, L.M. Shcheglova, D.S. Zotkin, S.A. Zotkin, I. Abt, C. Büttner, A. Caldwell, D. Kollar, W.B. Schmidke, J. Sutiak, G. Grigorescu, A. Keramidas, E. Koffeman, P. Kooijman, A. Pellegrino, H. Tiecke, M. Vázquez, L. Wiggers, N. Brümmer, B. Bylsma, L.S. Durkin, A. Lee, T.Y. Ling, P.D. Allfrey, M.A. Bell, A.M. Cooper-Sarkar, A. Cottrell, R.C.E. Devenish, B. Foster, K. Korcsak-Gorzo, S. Patel, V. Roberfroid, A. Robertson, P.B. Straub, C. Uribe-Estrada, R. Walczak, P. Bellan, A. Bertolin, R. Brugnera, R. Carlin, R. Ciesielski, F. Dal Corso, S. Dusini, A. Garfagnini, S. Limentani, A. Longhin, L. Stanco, M. Turcato, B.Y. Oh, A. Raval, J. Ukleja, J.J. Whitmore, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, J.E. Cole, J.C. Hart, H. Abramowicz, A. Gabareen, R. Ingbir, S. Kananov, A. Levy, M. Kuze, R. Hori, S. Kagawa, N. Okazaki, S. Shimizu, T. Tawara, R. Hamatsu, H. Kaji, S. Kitamura, O. Ota, Y.D. Ri, M.I. Ferrero, V. Monaco, R. Sacchi, A. Solano, M. Arneodo, M. Ruspa, S. Fourletov, J.F. Martin, S.K. Boutle, J.M. Butterworth, C. Gwenlan, R. Hall-Wilton, T.W. Jones, J.H. Loizides, M.R. Sutton, C. Targett-Adams, M. Wing, B. Brzozowska, J. Ciborowski, G. Grzelak, P. Kulinski, P. Łużniak, J. Malka, R.J. Nowak, J.M. Pawlak, T. Tymieniecka, A. Ukleja, A.F. Żarnecki, M. Adamus, P. Plucinski, Y. Eisenberg, I. Giller, D. Hochman, U. Karshon, M. Rosin, E. Brownson, T. Danielson, A. Everett, D. Kçira, D.D. Reeder, P. Ryan, A.A. Savin, W.H. Smith, H. Wolfe, S. Bhadra, C.D. Catterall, Y. Cui, G. Hartner, S. Menary, U. Noor, J. Standage, and J. Whyte
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Antiparticle, Particle physics, Meson, 010308 nuclear & particles physics, HERA, Deep inelastic scattering, 01 natural sciences, Zeus (malware), Nuclear physics, Pseudorapidity, 0103 physical sciences, D meson, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: The production of D-*+/-: (2010) mesons in e(+/-) p scattering in the range of exchanged photon virtuality 0.05 D-0 pi(+) with D-0 -> K-pi(+) and corresponding antiparticle decay were used to identify D* mesons and the ZEUS beampipe calorimeter was used to identify the scattered electron. Differential D* cross sections as functions of Q(2), inelasticity, y, transverse momentum of the D* meson, p(T)(D*), and pseudorapidity of the D* meson, eta(D*), have been measured in the kinematic region 0.02 < y < 0.85, 1.5 < p(T)(D*) < 9.0 GeV and \eta(D*)\< 1.5. The measured differential cross sections are in agreement with two different NLO QCD calculations. The cross sections are also compared to previous ZEUS measurements in the photoproduction and DIS regimes. (c) 2007 Elsevier B.V. All rights reserved.
Published: 2007

24. Search for radions at LEP2

Author: S. Yamashita, P. Igo-Kemenes, A. D. Schaile, K. Ishii, H. Jeremie, Gabriella Pasztor, P. Vannerem, H. Voss, D. E. Plane, O. Schaile, T. Kuhl, G. Giacomelli, Pamela Ferrari, P. Scharff-Hansen, C. P. Ward, S. Söldner-Rembold, P. Tran, Yoram Rozen, Matthias Schröder, D. Axen, R. M. Brown, A. De Roeck, M. Kobel, Lorne Levinson, I. R. Bailey, Ehud Duchovni, Oana Elena Vickey Boeriu, F. Spano, Kiyotomo Kawagoe, A. Gupta, A. Csilling, Frans Meijers, Junichi Kanzaki, Graham Wilson, J. Ludwig, T. Schörner-Sadenius, K. Runge, D. J. Miller, P. Bock, T. Kobayashi, A. Ludwig, J. Goldberg, C. Y. Chang, John Hill, Achim Stahl, B. C. Shen, Alain Bellerive, Daniel Lellouch, Shlomo Dado, D. R. Ward, A. M. Smith, Takehiko Mori, M. Donkers, Arnulf Quadt, P. M. Watkins, Siegfried Bethke, M. Przybycień, S. Campana, G. Anagnostou, N. K. Watson, A. A. Carter, George Lafferty, T. Behnke, A. J. Martin, Christoph Rembser, Satoshi Mihara, J. W. Gary, Klaus Rabbertz, Teresa Barillari, H. Landsman, P. Renkel, Gunter Wolf, M. Verzocchi, Stephen Lloyd, Andris Skuja, P. F. Åkesson, Giovanni Abbiendi, C. Ainsley, A. M. Rossi, Raimund Ströhmer, D. Karlen, Marek Tasevsky, Frank Fiedler, B. Dienes, Dezso Horvath, M. J. Oreglia, A. Michelini, P. Mättig, E. L. Barberio, Shoji Asai, P. Gagnon, Gianni Masetti, R. J. Hemingway, S. Braibant, J. Dubbert, R. K. Carnegie, J. Allison, Tetsuro Mashimo, M. F. Turner-Watson, J. Lillich, B. W. Kennedy, Tara Shears, Zoltan Laszlo Trocsanyi, P. Jovanovic, Claudia Ciocca, J. A. Wilson, K. Sachs, L. Zivkovic, C. Pahl, Peter Krieger, Dave Charlton, Philip Bechtle, C. F. Vollmer, Erez Etzion, Jochen Schieck, N. Meyer, Guenter Duckeck, Stefan Kluth, Shlomit Tarem, Paolo Giacomelli, R. J. Barlow, A. Mutter, J. R. Carter, M. Kupper, Richard Teuscher, Gideon Alexander, Paolo Capiluppi, M. Giunta, E. Tsur, C. M. Hawkes, W. Menges, Otmar Biebel, Isabel Marian Trigger, K. W. Bell, J. von Krogh, T. R. Wyatt, R. J. Hawkings, Tobias Kramer, James Pinfold, Alexander Oh, I. Nakamura, D. Lanske, S. W. O'Neale, Sachio Komamiya, R. D. Heuer, P. O. Günther, Gideon Bella, H. J. Burckhart, T. Saeki, K. J. Anderson, Norbert Wermes, T. Kawamoto, S. Orito, J. Grunhaus, J. M. Roney, M. Schumacher, Koichi Nagai, W. Mohr, E. A. De Wolf, P. Amaral, M. A. Thomson, E. K. U. Gross, H. Mes, I. P. Duerdoth, Eric Torrence, G. Mikenberg, R. J. Batley, P. J. Bell, H. Nanjo, M. Gruwé, Richard Nisius, Marco Cuffiani, M. Ford, A. Harel, Robert McPherson, K. D. Hoffman, Ikuo Ueda, D. M. Strom, Fabrizio Fabbri, A. Frey, J. Lu, W. F. Mader, P. S. Wells, A. T. Watson, M. Hamann, Richard Keeler, R. J. Sobie, Joost Vossebeld, Klaus Desch, T. R. Junk, M. Boutemeur, F. S. Merritt, Gregor Herten, J. A. McKenna, Christoph Geich-Gimbel, J. E. Pilcher, Thorsten Wengler, Gabriele Benelli, M. Hauschild, R. Vértesi, Gordon H. Hanson, Rolf Seuster, P. Sherwood, Oliver Pooth, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, James Letts, D. Zer-Zion, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, D. Toya, Balazs Ujvari, H. A. Neal, G.ABBIENDI, C.AINSLEY, P.F.°AKESSON, G.ALEXANDER, J.ALLISON, P.AMARAL, G.ANAGNOSTOU, K.J.ANDERSON, S.ASAI, D.AXEN, G.AZUELOS, I.BAILEY, E.BARBERIO, T.BARILLARI, R.J.BARLOW, R.J.BATLEY, P.BECHTLE, T.BEHNKE, K.W.BELL, P.J.BELL, G.BELLA, A.BELLERIVE, G.BENELLI, S.BETHKE, O.BIEBEL, O.BOERIU, P.BOCK, M.BOUTEMEUR, S.BRAIBANT, R.M.BROWN, K.BUESSER, H.J.BURCKHART, S.CAMPANA, P.CAPILUPPI, R.K.CARNEGIE, A.A.CARTER, J.R.CARTER, C.Y.CHANG, D.G.CHARLTON, C.CIOCCA, A.CSILLING, M.CUFFIANI, S.DADO, A.DE ROECK, E.A.DE WOLF, K.DESCH, B.DIENES, M.DONKERS, J.DUBBERT, E.DUCHOVNI, G.DUCKECK, I.P.DUERDOTH, E.ETZION, F.FABBRI, L.FELD, P.FERRARI, F.FIEDLER, I.FLECK, M.FORD, A.FREY, P.GAGNON, J.W.GARY, G.GAYCKEN, C.GEICH-GIMBEL, G.GIACOMELLI, P.GIACOMELLI, M.GIUNTA, J.GOLDBERG, E.GROSS, J.GRUNHAUS, M.GRUW´E, P.O.G¨UNTHER, A.GUPTA, C.HAJDU, M.HAMANN, G.G.HANSON, A.HAREL, M.HAUSCHILD, C.M.HAWKES, R.HAWKINGS, R.J.HEMINGWAY, G.HERTEN, R.D.HEUER, J.C.HILL, K.HOFFMAN, D.HORV´ATH, P. IGO-KEMENES, K. ISHII, H. JEREMIE, P. JOVANOVIC, T.R. JUNK, N.KANAYA, J.KANZAKI, D.KARLEN, K.KAWAGOE, T.KAWAMOTO, R.K.KEELER, R.G.KELLOGG, B.W.KENNEDY, S.KLUTH, T.KOBAYASHI, M.KOBEL, S.KOMAMIYA, T.KR¨AMER, P.KRIEGER, J. VON KROGH, K.KRUGER, T.KUHL, M.KUPPER, G.D. LAFFERTY, H. LANDSMAN, D. LANSKE, J.G. LAYTER, D. LELLOUCH, J. LETTSO, L. LEVINSON, J. LILLICH, S.L. LLOYD, F.K. LOEBINGER, J. LU, A. LUDWIG, J. LUDWIG, W.MADER, S.MARCELLINI, A.J.MARTIN, G.MASETTI, T.MASHIMO, P.M¨ATTIGM, J.MCKENNA, R.A.MCPHERSON, F.MEIJERS, W.MENGES, F.S.MERRITT, H.MES, N.MEYER, A.MICHELINI, S.MIHARA, G.MIKENBERG, D.J.MILLER, S.MOED, W.MOHR, T.MORI, A.MUTTER, K.NAGAI, I.NAKAMURA, H.NANJO, H.A.NEAL, R.NISIUS, S.W.O’NEALE, A.OH, M.J.OREGLIA, S.ORITO, C.PAHL, G.P´ASZTOR, J.R.PATER, J.E.PILCHER, J.PINFOLD, D.E.PLANE, O.POOTH, M.PRZYBYCIE´N, A.QUADT, K.RABBERTZ, C.REMBSER, P.RENKEL, J.M.RONEY, A.M.ROSSI, Y.ROZEN, K.RUNGE, K. SACHS, T. SAEKI, E.K.G. SARKISYAN, A.D. SCHAILE, O. SCHAILE, P. SCHARFF-HANSEN, J. SCHIECK, T. SCH¨ORNER-SADENIUS, M. SCHR¨ODER, M. SCHUMACHER, W.G. SCOTT, R. SEUSTER, T.G. SHEARS, B.C. SHEN, P. SHERWOOD, A. SKUJA, A.M. SMITH, R. SOBIE, S. S¨OLDNER-REMBOLD, F. SPANO, A. STAHL, D. STROM, R. STR¨OHMER, S.TAREM, M.TASEVSKY, R.TEUSCHER, M.A.THOMSON, E.TORRENCE, D.TOYA, P.TRAN, I.TRIGGER, Z.TR´OCS´ANYI, E.TSUR, M.F.TURNER-WATSON, I.UEDA, B.UJV´ARI, C.F.VOLLMER, P.VANNEREM, R.V´ERTESI, M.VERZOCCHI, H.VOSS, J.VOSSEBELD, C.P.WARD, D.R.WARD, P.M.WATKINS, A.T.WATSON, N.K.WATSON, P.S.WELLS, T.WENGLER, N.WERMES, G.W.WILSON, J.A.WILSON, G.WOLF, T.R.WYATT, S.YAMASHITA, D. ZER-ZION, L. ZIVKOVIC, and OPAL Collaboration
Subjects: Particle physics, Nuclear and High Energy Physics, High Energy Physics::Lattice, FOS: Physical sciences, Elementary particle, 01 natural sciences, 7. Clean energy, Standard Model, High Energy Physics - Experiment, symbols.namesake, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010306 general physics, Boson, Physics, Condensed Matter::Quantum Gases, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hierarchy problem, Scalar boson, Higgs field, Higgs boson, symbols, High Energy Physics::Experiment, Higgs mechanism, Particle Physics - Experiment
Abstract: A new scalar resonance, called the radion, with couplings to fermions and bosons similar to those of the Higgs boson, is predicted in the framework of Randall-Sundrum models, proposed solutions to the hierarchy problem with one extra dimension. An important distinction between the radion and the Higgs boson is that the radion would couple directly to gluon pairs, and in particular its decay products would include a significant fraction of gluon jets. The radion had the same quantum numbers as the Standard Model (SM) Higgs boson, and therefore they can mix, with the resulting mass eigenstates having properties different from those of the SM Higgs boson. Existing searches for the Higgs boson are sensitive to the possible production and decay of radions and Higgs bosons in these models. For the first time, searches for the SM Higgs boson and flavour-independent and decay-mode independent searches for a neutral Higgs boson are used in combination to explore the parameter space of the Randall-Sundrum model. In the dataset recorded by the OPAL experiment at LEP, no evidence for radion or Higgs particle production was observed in any of those searches. The results are used to set limits on the radion and Higgs boson masses., Comment: 18 pages, 6 figures, Submitted to Phys. Lett. B
Published: 2005
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25. Measurements of Rb in e+e− collisions at s between 182 and 209 GeV

Author: A. Csilling, P. Mättig, Shoji Asai, Daniel Lellouch, Takehiko Mori, W. F. Mader, E. Torrence, A. Gupta, Dave Charlton, O. Schaile, Yoram Rozen, Junichi Kanzaki, Paolo Giacomelli, J. Goldberg, J. M. Roney, M. Schumacher, Andris Skuja, Christoph Geich-Gimbel, R. Nisius, R. Vértesi, George Lafferty, Graham Wilson, P. S. Wells, Matthias Schröder, Tetsuro Mashimo, M. F. Turner-Watson, Satoshi Mihara, P. Gagnon, Gianni Masetti, R. D. Heuer, Koichi Nagai, A. T. Watson, Shlomo Dado, E. A. De Wolf, D. E. Plane, C. F. Vollmer, Achim Stahl, Gideon Bella, S. Yamashita, P. Igo-Kemenes, Gordon H. Hanson, Klaus Rabbertz, Stephen Lloyd, Zoltan Laszlo Trocsanyi, M. Hauschild, H. J. Burckhart, W. Mohr, N. Meyer, M. Kupper, P. Tran, F. S. Merritt, A. Harel, N. K. Watson, Alain Bellerive, M. A. Thomson, K. Ishii, R. K. Carnegie, T. Schörner-Sadenius, Ikuo Ueda, D. M. Strom, J. A. Wilson, P. Amaral, Oliver Pooth, H. Jeremie, E. K. U. Gross, J. Lu, Tara Shears, D. Axen, John Allison, S. Campana, D. J. Miller, Kiyotomo Kawagoe, M. Gruwé, Oana Elena Vickey Boeriu, F. Spano, C. Ainsley, Gabriella Pasztor, J. A. McKenna, Peter Sherwood, Gideon Alexander, T. Barillari, P. Vannerem, J. Ludwig, K. Runge, P. Bock, M. Hamann, R. J. Hemingway, James Pinfold, R. G. Kellogg, C. P. Ward, G. Anagnostou, R. Seuster, A. Michelini, H. Mes, J. Lillich, M. Boutemeur, A. D. Schaile, Marco Cuffiani, Csaba Hajdu, S. Söldner-Rembold, Thorsten Wengler, B. W. Kennedy, Ehud Duchovni, R. K. Keeler, I. P. Duerdoth, P. Jovanovic, R. M. Brown, Lorne Levinson, Stefano Marcellini, R. J. Sobie, A. J. Martin, Peter Krieger, T. Kuhl, Christoph Rembser, James Letts, Arnulf Quadt, Joost Vossebeld, I. R. Bailey, F. Fiedler, O. Biebel, Klaus Desch, S. Bethke, P. M. Watkins, Alessandro Montanari, D. Zer-Zion, P. J. Bell, G. Mikenberg, Claudia Ciocca, Richard Teuscher, T. Behnke, F. K. Loebinger, Gabriele Benelli, K. Sachs, Philip Bechtle, M. Ford, H. Landsman, P. Renkel, Ivor Fleck, T. Kobayashi, Pamela Ferrari, A. Ludwig, R. J. Batley, Joleen Pater, Erez Etzion, D. R. Ward, P. Scharff-Hansen, S. Kluth, Edward K. G. Sarkisyan, D. Toya, T. R. Junk, Balazs Ujvari, H. A. Neal, E. L. Barberio, T. R. Wyatt, A. M. Smith, Robert McPherson, Gregor Herten, H. Nanjo, Shlomit Tarem, K. D. Hoffman, Fabrizio Fabbri, A. Frey, J. von Krogh, H. Voss, J. Dubbert, M. Giunta, G. Giacomelli, A. De Roeck, M. Kobel, R. J. Hawkings, Gunter Wolf, J. E. Pilcher, Frans Meijers, D. Karlen, G. Duckeck, M. Przybycień, A. A. Carter, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, B. C. Shen, M. Donkers, J. W. Gary, Marek Tasevsky, Dezso Horvath, W. Menges, Norbert Wermes, T. Kawamoto, S. Orito, E. Tsur, C. M. Hawkes, M. J. Oreglia, S. Braibant, Isabel Marian Trigger, K. W. Bell, L. Zivkovic, J. R. Carter, J. C. Hill, Tobias Kramer, Jochen Schieck, R. J. Barlow, R. Ströhmer, Alexander Oh, I. Nakamura, D. Lanske, J. Grunhaus, Sachio Komamiya, T. Saeki, Alessandra Fanfani, Beatrix Dienes, C. Y. Chang, A. Mutter, S. W. O'Neale, C. Pahl, P. O. Günther, and K. J. Anderson
Subjects: Nuclear physics, Physics, Quark, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Charm (quantum number), 010306 general physics, 01 natural sciences, Standard Model, Lepton
Abstract: Measurements of R b , the ratio of the b b ¯ cross-section to the q q ¯ cross-section in e + e − collisions, are presented. The data were collected by the OPAL experiment at LEP at centre-of-mass energies between 182 and 209 GeV. Lepton, lifetime and event-shape information is used to tag events containing b quarks with high efficiency. The data are compatible with the Standard Model expectation. The mean ratio of the eight measurements reported here to the Standard Model prediction is 1.055 ± 0.031 ± 0.037 , where the first error is statistical and the second systematic.
Published: 2005

26. Angular correlations in three-jet events inepcollisions at HERA

Author: A. Raval, Ie. Korol, I. A. Korzhavina, P. Roloff, U. Karshon, Danuta Kisielewska, G. Susinno, T. P. Stewart, P.F. Ermolov, M. Arneodo, Robert Ciesielski, L. M. Shcheglova, B. B. Levchenko, C. Youngman, A. Longhin, Alessandro Polini, P. Stopa, I. Gialas, A. E. Nuncio-Quiroz, J. Grebenyuk, A. Nigro, N. Brümmer, R. Ingbir, R. Yoshida, James Ferrando, P. Göttlicher, O. Behnke, Allen Caldwell, J. Schwartz, G. Grzelak, M. Ruspa, L. Wiggers, E. Gallo, Massimo Corradi, Zainol Abidin Ibrahim, A.S. Proskuryakov, V. Sosnovtsev, J. F. Martin, Ada Solano, T. Namsoo, V. Bokhonov, A. Keramidas, Marcello Bindi, B. Pawlik, Edouard Boos, M. Derrick, T. Tymieniecka, A.G. Yagües-Molina, Masahiro Kuze, Iwona Grabowska-Bold, Tobias M. Haas, D. Gladkov, Antonio Pellegrino, A. N. Barakbaev, V. Schönberg, A. Zichichi, Claire Gwenlan, A.G. Robertson, Mariusz Przybycien, O. Viazlo, F. Januschek, D. Notz, J. M. Pawlak, Z. L. Ren, D.D. Reeder, Kenneth Long, Marco Schioppa, S. Magill, Uta Klein, W. H. Smith, P. G. Pelfer, S. Limentani, J. Del Peso, Y. Ning, J. Repond, D.S. Zotkin, J. Maeda, Yuji Yamazaki, Igor Katkov, C. Zhou, Ramoona Shehzadi, B. Löhr, Denys Lontkovskyi, Marcin Pawel Guzik, A. Stern, Takuya Nobe, A. Parenti, Guenter Wolf, A. Garfagnini, C. D. Catterall, R. J. Nowak, R. Aggarwal, I. Singh, T. Tsurugai, B.O. Zhautykov, Marco Costa, Y. Iga, F. Mohamad Idris, Mykhailo Lisovyi, H.-P. Jakob, K. Oliver, Claudia Glasman, V. Drugakov, Achim Geiser, E. Brownson, W. Perlanski, R.C.E. Devenish, U. Samson, John Hart, B. Brzozowska, Fernando Barreiro, R. Brugnera, O. Yu. Lukina, B. Reisert, Kerstin Borras, T. W. Jones, M.C.K. Mattingly, Juan Terron, Lorenzo Bellagamba, Luca Stanco, Lev Khein, Enrico Tassi, J. J. Whitmore, Dong-Chul Son, J. Tomaszewska, Wojciech Slominski, L. S. Durkin, T. Schörner-Sadenius, Katsuo Tokushuku, S.I. Suchkov, R. Mankel, Wolfgang Lohmann, Graziano Bruni, Oleg Kuprash, J. Szuba, K. Wrona, D. H. Saxon, Orel Gueta, Andrii Verbytskyi, I. Rubinsky, H. Tiecke, S. Antonelli, R. Hamatsu, O. Bachynska, M. Jüngst, Ben Bylsma, D. Szuba, Janusz Chwastowski, Els Koffeman, E. Lohrmann, C. Blohm, Jan Figiel, S. Kananov, S. Fazio, Peter Schleper, G. Hartner, H. Hartmann, S. De Pasquale, V. Aushev, Francois Corriveau, Vladyslav Libov, B. Foster, I. Kadenko, S. Dusini, Grzegorz Gach, M. Adamus, Leszek Adamczyk, Didar Dobur, D. Bot, G. Marini, E. Paul, Shima Shimizu, Wolfram Dietrich Zeuner, A. Bamberger, Alessia Bruni, M.I. Ferrero, Alexander Spiridonov, Ulf Behrens, I. A. Melzer-Pellmann, N. Okazaki, A. Kotański, F. Karstens, E. Hilger, H. Kowalski, Tomasz Bold, Matthew Forrest, Ian Brock, G. Bari, F. J. Sciulli, Y. Aushev, Halina Abramowicz, Alessandro Montanari, F. Cindolo, John Morris, W. A. T. Wan Abdullah, B.Y. Oh, Alexander Tapper, J. Y. Kim, Pietro Antonioli, S. Bhadra, A. Hüttmann, N. Zhmak, Luisa Cifarelli, R. K. Dementiev, K. Mujkic, A. Contin, Alexander Savin, S. Fang, N.S. Pokrovskiy, B. Musgrave, Ewelina Lobodzinska, O. Zenaiev, I. Makarenko, Hartmut Stadie, Valentina Sola, A. Margotti, Zukhaimira Zolkapli, N. Coppola, K. Olkiewicz, H. Wolfe, L. Suszycki, Sebastian Mergelmeyer, Roberto Sacchi, Ingrid-Maria Gregor, Peter Bussey, U. Schneekloth, Anna Mastroberardino, A. Antonov, Masaki Ishitsuka, R. Hori, M. Jimenez, I. O. Skillicorn, Aharon Levy, Amanda Cooper-Sarkar, K. Piotrzkowski, S. Kitamura, M. Zolko, W. B. Schmidke, R. Nania, T. Kanno, Hanno Perrey, G. Dolinska, T. Theedt, Yu. A. Golubkov, K. Papageorgiu, J. Malka, F. Dal Corso, Yu. Onishchuk, U. Noor, Marcella Capua, P. Kooijman, N.N. Vlasov, M. Wlasenko, Silvia Miglioranzi, S. Yamada, Alessandro Bertolin, G. Grigorescu, I. Abt, Boris Dolgoshein, V. Monaco, W. Hain, A. Eskreys, Pawel Plucinski, Janna Katharina Behr, A. F. Żarnecki, Y.D. Ri, A. Galas, A. Salii, D. Hochman, O. Volynets, S. Schlenstedt, L. Zawiejski, M. Turcato, Kunihiro Nagano, G. D'Agostini, M. Vázquez, P. Kaur, Kyrylo Bondarenko, T. Y. Ling, M. Basile, O. Gogota, O. Tomalak, U. Kötz, Robert Klanner, A. Stifutkin, Y. Eisenberg, K. Horton, J. Ciborowski, Giuseppe Barbagli, A. T. Doyle, Manjit Kaur, Matthew Wing, G. Sartorelli, Leonid Gladilin, Roman Walczak, Davide Boscherini, N. Bartosik, J. Sztuk-Dambietz, Sergei Chekanov, Dirk-Uwe Bartsch, B. Kahle, Roberto Carlin, A. Lee, Zeus (IHEF, IoP, FNWI), Precision Frontier, UAM. Departamento de Física Teórica, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWA, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, N. BARTOSIK, D. BARTSCH, M. BASILE, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, V. BOKHONOV, T. BOLD, O. BOLILYI, K. BONDARENKO, E.G. BOOS, K. BORRAS, D. BOSCHERINI, D. BOT, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P.J. BUSSEY, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C.D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DEL PESO, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, D. DOBUR, B.A. DOLGOSHEIN, G. DOLINSKA, A.T. DOYLE, V. DRUGAKOV, L.S. DURKIN, S. DUSINI, Y. EISENBERG, P.F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M.I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, YU.A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA-BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, O. GUETA, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, R. HORI, K. HORTON, A. HÜTTMANN, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H.-P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I.I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L.A. KHEIN, J.Y. KIM, D. KISIELEWSKA1, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, P. KOOIJMAN, I. KOROL, I.A. KORZHAVINA, A. KOTA´ NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, A. LEE, B.B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T.Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, O.YU. LUKINA, P. LU?ZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J.F. MARTIN, A. MASTROBERARDINO, M.C.K. MATTINGLY, I.-A. MELZER PELLMANN, S. MERGELMEYER, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J.D. MORRIS, K. MUJKIC, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, T. NOBE, U. NOOR, D. NOTZ, R.J. NOWAK, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, YU. ONISHCHUK, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J.M. PAWLAK, B. PAWLIK, P.G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N.S. POKROVSKIY, A. POLINI, A.S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D.D. REEDER, B. REISERT, Z. REN1, J. REPOND, Y.D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, G. SARTORELLI, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER-SADENIUS, J. SCHWARTZ, F. SCIULLI, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I.O. SKILLICORN, W. SLOMI´ NSKI, W.H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T.P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK-DAMBIETZ, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE-ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, O. VIAZLO, N.N. VLASOV, O. VOLYNETS, R.WALCZAK, W.A.T. WAN ABDULLAH, J.J.WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K.WRONA, A.G. YAGÜES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B.O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, Z. ZOLKAPLI, M. ZOLKO, and D.S. ZOTKIN
Subjects: Nuclear and High Energy Physics, Particle physics, MONTE-CARLO GENERATOR, ZEUS, DEEP-INELASTIC-SCATTERING, TRIPLE-GLUON VERTEX, QCD COLOR FACTORS, CENTRAL TRACKING DETECTOR, 4-JET FINAL-STATES, LEPTON-NUCLEON SCATTERING, ZEUS BARREL CALORIMETER, C-A/C-F, PARTON DISTRIBUTIONS, FOS: Physical sciences, ep collisions, Symmetry group, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, ddc:530, 010306 general physics, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Scattering, Física, Perturbative QCD, HERA, Deep inelastic scattering, Symmetry (physics), Three-jet production, High Energy Physics::Experiment, ZEUS experiment
Abstract: Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM, Three-jet production in deep inelastic ep scattering and photoproduction was investigated with the ZEUS detector at HERA using an integrated luminosity of up to 127pb-1. Measurements of differential cross sections are presented as functions of angular correlations between the three jets in the final state and the proton-beam direction. These correlations provide a stringent test of perturbative QCD and show sensitivity to the contributions from different color configurations. Fixed-order perturbative calculations assuming the values of the color factors CF, CA, and TF as derived from a variety of gauge groups were compared to the measurements to study the underlying gauge group symmetry. The measured angular correlations in the deep inelastic ep scattering and photoproduction regimes are consistent with the admixture of color configurations as predicted by SU(3) and disfavour other symmetry groups, such as SU(N) in the limit of large N, This work was supported by the U.S. Department of Energy, the Italian National Institute for Nuclear Physics (INFN), the German Federal Ministry for Education and Research (BMBF) under Contract No. H09PDF, No. 05h09GUF, and the SFB 676 of the Deutsche Forschungsgemeinschaft (DFG); DESY, Germany; the Science and Technology Facilities Council, United Kingdom; an FRGS grant from the Malaysian government; Presidential grant N-4142.2010.2 for Leading Scientific Schools, by the Russian Ministry of Education and Science through its grant for Scientific Research on High Energy Physics and under Contract No. 02.740.11.0244; the Netherlands Foundation for Research on Matter (FOM); the Israel Science Foundation; the Max Planck Institute for Physics, Munich, Germany; MEIN research grant No. 1 P03B 04529 (2005–2008), Poland; Warsaw University, Poland; the Russian Foundation for Basic Research, Grant 11-02- 91345-DFG_a; the Polish Ministry of Science and Higher Education as a scientific project No. DPN/N188/DESY/ 2009 and its grants for Scientific Research; the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and its grants for Scientific Research; the Korean Ministry of Education and Korea Science and Engineering Foundation; FNRS and its associated funds (IISN and FRIA) and by an Inter-University Attraction Poles Programme subsidized by the Belgian Federal Science Policy Office; the Spanish Ministry of Education and Science through funds provided by CICYT; the Natural Sciences and Engineering Research Council of Canada (NSERC); and the U.S. National Science Foundation
Published: 2012

27. Exclusive electroproduction of two pions at HERA

Author: H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWA, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A. N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, N. BARTOSIK, D. BARTSCH, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, V. BOKHONOV, T. BOLD, O. BOLILYI, K. BONDARENKO, E. G. BOOS, K. BORRAS, D. BOSCHERINI, D. BOT, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P. J. BUSSEY, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C. D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, F. CINDOLO, A. M. COOPER SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DEL PESO, R. K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R. C. E. DEVENISH, D. DOBUR, B. A. DOLGOSHEIN, G. DOLINSKA, A. T. DOYLE, V. DRUGAKOV, L. S. DURKIN, S. DUSINI, Y. EISENBERG, P. F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M. I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L. K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, Y.U. A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, O. GUETA, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J. C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, R. HORI, K. HORTON, A. HÜTTMANN, Z. A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H. P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T. W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I. I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L. A. KHEIN, J. Y. KIM, D. KISIELEWSKA1, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, P. KOOIJMAN, I. KOROL, I. A. KORZHAVINA, A. KOTA´ NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, A. LEE, B. B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T. Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, K. R. LONG, A. LONGHIN, D. LONTKOVSKYI, O. Y.U. LUKINA, P. LU?ZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J. F. MARTIN, A. MASTROBERARDINO, M. C. K. MATTINGLY, I. A. MELZER PELLMANN, S. MERGELMEYER, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J. D. MORRIS, K. MUJKIC, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, T. NOBE, U. NOOR, D. NOTZ, R. J. NOWAK, A. E. NUNCIO QUIROZ, B. Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, Y.U. ONISHCHUK, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J. M. PAWLAK, B. PAWLIK, P. G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N. S. POKROVSKIY, A. POLINI, A. S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D. D. REEDER, B. REISERT, Z. REN1, J. REPOND, Y. D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, A. A. SAVIN, D. H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W. B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER SADENIUS, J. SCHWARTZ, F. SCIULLI, L. M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I. O. SKILLICORN, W. SLOMI´ NSKI, W. H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T. P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK DAMBIETZ, D. SZUBA, J. SZUBA, A. D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, O. VIAZLO, N. N. VLASOV, O. VOLYNETS, R. WALCZAK, W. A. T. WAN ABDULLAH, J. J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, A. G. YAGÜES MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A. F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B. O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, Z. ZOLKAPLI, M. ZOLKO, D. S. ZOTKIN, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, SARTORELLI, GABRIELLA, Precision Frontier, Zeus (IHEF, IoP, FNWI), H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWA, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, N. BARTOSIK, D. BARTSCH, M. BASILE, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, V. BOKHONOV, T. BOLD, O. BOLILYI, K. BONDARENKO, E.G. BOOS, K. BORRAS, D. BOSCHERINI, D. BOT, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P.J. BUSSEY, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C.D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DEL PESO, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, D. DOBUR, B.A. DOLGOSHEIN, G. DOLINSKA, A.T. DOYLE, V. DRUGAKOV, L.S. DURKIN, S. DUSINI, Y. EISENBERG, P.F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M.I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, YU.A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA-BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, O. GUETA, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, R. HORI, K. HORTON, A. HÜTTMANN, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H.-P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I.I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L.A. KHEIN, J.Y. KIM, D. KISIELEWSKA1, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, P. KOOIJMAN, I. KOROL, I.A. KORZHAVINA, A. KOTA´ NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, A. LEE, B.B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T.Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, O.YU. LUKINA, P. LU?ZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J.F. MARTIN, A. MASTROBERARDINO, M.C.K. MATTINGLY, I.-A. MELZER PELLMANN, S. MERGELMEYER, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J.D. MORRIS, K. MUJKIC, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, T. NOBE, U. NOOR, D. NOTZ, R.J. NOWAK, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, YU. ONISHCHUK, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J.M. PAWLAK, B. PAWLIK, P.G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N.S. POKROVSKIY, A. POLINI, A.S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D.D. REEDER, B. REISERT, Z. REN1, J. REPOND, Y.D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, G. SARTORELLI, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER-SADENIUS, J. SCHWARTZ, F. SCIULLI, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I.O. SKILLICORN, W. SLOMI´ NSKI, W.H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T.P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK-DAMBIETZ, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE-ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, O. VIAZLO, N.N. VLASOV, O. VOLYNETS, R.WALCZAK, W.A.T. WAN ABDULLAH, J.J.WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K.WRONA, A.G. YAGÜES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B.O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, Z. ZOLKAPLI, M. ZOLKO, and D.S. ZOTKIN
Subjects: Particle physics, TAU-DECAYS, Physics and Astronomy (miscellaneous), J/PSI MESONS, Nuclear Theory, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Pion, Pion em form factor, 0103 physical sciences, SCATTERING, ddc:530, RHO-MESON, CALORIMETER, Nuclear Experiment, 010306 general physics, DIFFRACTIVE ELECTROPRODUCTION, Engineering (miscellaneous), Physics, FORM-FACTOR, 010308 nuclear & particles physics, Two-pion exclusive electroproduction, Sigma, ZEUS, CENTRAL TRACKING DETECTOR, VECTOR-MESON PRODUCTION, PHOTOPRODUCTION, HERA, Vertex (geometry), High Energy Physics::Experiment, ZEUS experiment
Abstract: The exclusive electroproduction of two pions in the mass range 0.4 < M{\pi}{\pi} < 2.5 GeV has been studied with the ZEUS detector at HERA using an integrated luminosity of 82 pb-1. The analysis was carried out in the kinematic range of 2 < Q2 < 80 GeV2, 32 < W < 180 GeV and |t| < 0.6 GeV2, where Q2 is the photon virtuality, W is the photon-proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The two-pion invariant-mass distribution is interpreted in terms of the pion electromagnetic form factor, |F(M{\pi}{\pi})|, assuming that the studied mass range includes the contributions of the {\rho}, {\rho}' and {\rho}" vector-meson states. The masses and widths of the resonances were obtained and the Q2 dependence of the cross-section ratios {\sigma}({\rho}' \rightarrow {\pi}{\pi})/{\sigma}({\rho}) and {\sigma}({\rho}" \rightarrow {\pi}{\pi})/{\sigma}({\rho}) was extracted. The pion form factor obtained in the present analysis is compared to that obtained in e+e- \rightarrow {\pi}+{\pi}-., Comment: 24 pages, including 11 figures
Published: 2012

28. Measurement of the t dependence in exclusive photoproduction of $\Upsilon$(1S) mesons at HERA

Author: H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWA, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A. N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, N. BARTOSIK, D. BARTSCH, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, V. BOKHONOV, T. BOLD, O. BOLILYI, K. BONDARENKO, E. G. BOOS, K. BORRAS, D. BOSCHERINI, D. BOT, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P. J. BUSSEY, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C. D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, F. CINDOLO, A. M. COOPER SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DEL PESO, R. K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R. C. E. DEVENISH, D. DOBUR, B. A. DOLGOSHEIN, G. DOLINSKA, A. T. DOYLE, V. DRUGAKOV, L. S. DURKIN, S. DUSINI, Y. EISENBERG, P. F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M. I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L. K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, Y.U. A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, O. GUETA, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J. C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, R. HORI, K. HORTON, A. HÜTTMANN, Z. A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H. P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T. W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I. I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L. A. KHEIN, J. Y. KIM, D. KISIELEWSKA1, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, P. KOOIJMAN, I. KOROL, I. A. KORZHAVINA, A. KOTA´ NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, A. LEE, B. B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T. Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, K. R. LONG, A. LONGHIN, D. LONTKOVSKYI, O. Y.U. LUKINA, P. LU?ZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J. F. MARTIN, A. MASTROBERARDINO, M. C. K. MATTINGLY, I. A. MELZER PELLMANN, S. MERGELMEYER, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J. D. MORRIS, K. MUJKIC, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, T. NOBE, U. NOOR, D. NOTZ, R. J. NOWAK, A. E. NUNCIO QUIROZ, B. Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, Y.U. ONISHCHUK, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J. M. PAWLAK, B. PAWLIK, P. G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N. S. POKROVSKIY, A. POLINI, A. S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D. D. REEDER, B. REISERT, Z. REN1, J. REPOND, Y. D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, A. A. SAVIN, D. H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W. B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER SADENIUS, J. SCHWARTZ, F. SCIULLI, L. M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I. O. SKILLICORN, W. SLOMI´ NSKI, W. H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T. P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK DAMBIETZ, D. SZUBA, J. SZUBA, A. D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, O. VIAZLO, N. N. VLASOV, O. VOLYNETS, R. WALCZAK, W. A. T. WAN ABDULLAH, J. J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, A. G. YAGÜES MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A. F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B. O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, Z. ZOLKAPLI, M. ZOLKO, D. S. ZOTKIN, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, SARTORELLI, GABRIELLA, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWA, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, N. BARTOSIK, D. BARTSCH, M. BASILE, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, V. BOKHONOV, T. BOLD, O. BOLILYI, K. BONDARENKO, E.G. BOOS, K. BORRAS, D. BOSCHERINI, D. BOT, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P.J. BUSSEY, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C.D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DEL PESO, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, D. DOBUR, B.A. DOLGOSHEIN, G. DOLINSKA, A.T. DOYLE, V. DRUGAKOV, L.S. DURKIN, S. DUSINI, Y. EISENBERG, P.F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M.I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, YU.A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA-BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, O. GUETA, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, R. HORI, K. HORTON, A. HÜTTMANN, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H.-P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I.I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L.A. KHEIN, J.Y. KIM, D. KISIELEWSKA1, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, P. KOOIJMAN, I. KOROL, I.A. KORZHAVINA, A. KOTA´ NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, A. LEE, B.B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T.Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, O.YU. LUKINA, P. LU?ZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J.F. MARTIN, A. MASTROBERARDINO, M.C.K. MATTINGLY, I.-A. MELZER PELLMANN, S. MERGELMEYER, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J.D. MORRIS, K. MUJKIC, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, T. NOBE, U. NOOR, D. NOTZ, R.J. NOWAK, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, YU. ONISHCHUK, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J.M. PAWLAK, B. PAWLIK, P.G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N.S. POKROVSKIY, A. POLINI, A.S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D.D. REEDER, B. REISERT, Z. REN1, J. REPOND, Y.D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, G. SARTORELLI, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER-SADENIUS, J. SCHWARTZ, F. SCIULLI, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I.O. SKILLICORN, W. SLOMI´ NSKI, W.H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T.P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK-DAMBIETZ, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE-ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, O. VIAZLO, N.N. VLASOV, O. VOLYNETS, R.WALCZAK, W.A.T. WAN ABDULLAH, J.J.WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K.WRONA, A.G. YAGÜES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B.O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, Z. ZOLKAPLI, M. ZOLKO, and D.S. ZOTKIN
Subjects: High Energy Physics - Experiment (hep-ex), Upsilon(1S) photoproduction, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, High Energy Physics::Experiment, ep collisions, ddc:530, Nuclear Experiment, High Energy Physics - Experiment, ZEUS experiment
Abstract: The exclusive photoproduction reaction gamma p -> Upsilon(1S) p has been studied with the ZEUS detector in ep collisions at HERA using an integrated luminosity of 468 pb^-1. The measurement covers the kinematic range 60 Upsilon(1S) p cross section., Comment: 15 pages, 4 figures; http://dx.doi.org/10.1016/j.physletb.2012.01.009
Published: 2012

29. Determination of the LEP beam energy using radiative fermion-pair events

Author: Siegfried Bethke, J. W. Gary, Dezso Horvath, W. Menges, Otmar Biebel, G. W. Wilson, M. Hamann, M. Hauschild, Richard Keeler, J. Goldberg, R. J. Sobie, Joost Vossebeld, George Lafferty, Klaus Desch, Christoph Rembser, H. Landsman, W. F. Mader, Gunter Wolf, Erez Etzion, S. W. O'Neale, Stefan Kluth, Shlomit Tarem, P. O. Günther, Norbert Wermes, T. Kawamoto, M. Giunta, D. Karlen, Satoshi Mihara, P. S. Wells, P. Sherwood, Oliver Pooth, S. Orito, A. T. Watson, Alain Bellerive, E. Tsur, C. M. Hawkes, E. L. Barberio, Isabel Marian Trigger, K. W. Bell, K. J. Anderson, H. Mes, Kiyotomo Kawagoe, John Allison, A. Harel, Ikuo Ueda, D. M. Strom, J. C. Hill, J. Lu, I. P. Duerdoth, Tobias Kramer, R. J. Hemingway, Gianni Masetti, M. J. Oreglia, C. Y. Chang, Shlomo Dado, J. Lillich, Achim Stahl, S. Braibant, N. K. Watson, Sachio Komamiya, Dave Charlton, L. Zivkovic, Frank Fiedler, Thorsten Wengler, B. W. Kennedy, P. Jovanovic, J. R. Carter, D. Toya, Tara Shears, M. Przybycień, Peter Krieger, C. Ainsley, A. M. Rossi, Raimund Ströhmer, Christoph Geich-Gimbel, Giora Mikenberg, R. G. Kellogg, R. J. Batley, Gideon Alexander, J. M. Roney, A. A. Carter, Csaba Hajdu, R. D. Heuer, P. J. Bell, Stefano Marcellini, S. Yamashita, M. Schumacher, A. D. Schaile, Gabriella Pasztor, T. Saeki, James Letts, P. Vannerem, M. Verzocchi, Gideon Bella, Gabriele Benelli, P. F. Åkesson, Giovanni Abbiendi, Beatrix Dienes, Klaus Rabbertz, P. Igo-Kemenes, Stephen Lloyd, M. Tasevsky, R. Vértesi, Yoram Rozen, E. A. De Wolf, R. M. Brown, Lorne Levinson, Claudia Ciocca, T. Behnke, K. Sachs, C. P. Ward, Philip Bechtle, H. J. Burckhart, S. Söldner-Rembold, Ehud Duchovni, Alexander Oh, P. Amaral, I. R. Bailey, J. Dubbert, R. K. Carnegie, K. Ishii, H. Jeremie, A. Michelini, Arnulf Quadt, Matthias Schröder, Koichi Nagai, D. J. Miller, T. R. Junk, T. Kobayashi, K. Hoffman, A. Ludwig, Gregor Herten, W. Mohr, J. A. Wilson, Junichi Kanzaki, M. Boutemeur, F. S. Merritt, P. Gagnon, I. Nakamura, D. Lanske, D. E. Plane, P. M. Watkins, A. Mutter, Robert McPherson, D. R. Ward, Zoltan Laszlo Trocsanyi, O. Schaile, Paolo Giacomelli, Gordon H. Hanson, J. A. McKenna, T. Schörner-Sadenius, J. E. Pilcher, P. Renkel, Daniel Lellouch, T. Kuhl, P. Tran, Fabrizio Fabbri, A. Frey, Takehiko Mori, H. Nanjo, D. Zer-Zion, A. J. Martin, D. Axen, F. K. Loebinger, M. Ford, Oana Elena Vickey Boeriu, F. Spano, Ivor Fleck, P. Capiluppi, Joleen Pater, Edward K. G. Sarkisyan, J. Ludwig, K. Runge, P. Bock, M. A. Thomson, Balazs Ujvari, H. A. Neal, C. F. Vollmer, J. von Krogh, A. Gupta, Jochen Schieck, R. J. Hawkings, E. K. U. Gross, J. Grunhaus, C. Pahl, Teresa Barillari, R. J. Barlow, A. Csilling, M. Gruwé, Eric Torrence, Richard Nisius, P. Mättig, Shoji Asai, Marco Cuffiani, H. Voss, Andris Skuja, G. Giacomelli, Pamela Ferrari, A. De Roeck, M. Kobel, Tetsuro Mashimo, M. F. Turner-Watson, Frans Meijers, N. Meyer, M. Kupper, G. Anagnostou, James Pinfold, R. Seuster, P. Scharff-Hansen, Guenter Duckeck, A. M. Smith, S. Campana, Richard Teuscher, T. R. Wyatt, B. C. Shen, M. Donkers, G.ABBIENDI, C.AINSLEY, P.F.°AKESSON, G.ALEXANDER, J.ALLISON, P.AMARAL, G.ANAGNOSTOU, K.J.ANDERSON, S.ASAI, D.AXEN, G.AZUELOS, I.BAILEY, E.BARBERIO, T.BARILLARI, R.J.BARLOW, R.J.BATLEY, P.BECHTLE, T.BEHNKE, K.W.BELL, P.J.BELL, G.BELLA, A.BELLERIVE, G.BENELLI, S.BETHKE, O.BIEBEL, O.BOERIU, P.BOCK, M.BOUTEMEUR, S.BRAIBANT, R.M.BROWN, K.BUESSER, H.J.BURCKHART, S.CAMPANA, P.CAPILUPPI, R.K.CARNEGIE, A.A.CARTER, J.R.CARTER, C.Y.CHANG, D.G.CHARLTON, C.CIOCCA, A.CSILLING, M.CUFFIANI, S.DADO, A.DE ROECK, E.A.DE WOLF, K.DESCH, B.DIENES, M.DONKERS, J.DUBBERT, E.DUCHOVNI, G.DUCKECK, I.P.DUERDOTH, E.ETZION, F.FABBRI, L.FELD, P.FERRARI, F.FIEDLER, I.FLECK, M.FORD, A.FREY, P.GAGNON, J.W.GARY, G.GAYCKEN, C.GEICH-GIMBEL, G.GIACOMELLI, P.GIACOMELLI, M.GIUNTA, J.GOLDBERG, E.GROSS, J.GRUNHAUS, M.GRUW´E, P.O.G¨UNTHER, A.GUPTA, C.HAJDU, M.HAMANN, G.G.HANSON, A.HAREL, M.HAUSCHILD, C.M.HAWKES, R.HAWKINGS, R.J.HEMINGWAY, G.HERTEN, R.D.HEUER, J.C.HILL, K.HOFFMAN, D.HORV´ATH, P. IGO-KEMENES, K. ISHII, H. JEREMIE, P. JOVANOVIC, T.R. JUNK, N.KANAYA, J.KANZAKI, D.KARLEN, K.KAWAGOE, T.KAWAMOTO, R.K.KEELER, R.G.KELLOGG, B.W.KENNEDY, S.KLUTH, T.KOBAYASHI, M.KOBEL, S.KOMAMIYA, T.KR¨AMER, P.KRIEGER, J. VON KROGH, K.KRUGER, T.KUHL, M.KUPPER, G.D. LAFFERTY, H. LANDSMAN, D. LANSKE, J.G. LAYTER, D. LELLOUCH, J. LETTSO, L. LEVINSON, J. LILLICH, S.L. LLOYD, F.K. LOEBINGER, J. LU, A. LUDWIG, J. LUDWIG, W.MADER, S.MARCELLINI, A.J.MARTIN, G.MASETTI, T.MASHIMO, P.M¨ATTIGM, J.MCKENNA, R.A.MCPHERSON, F.MEIJERS, W.MENGES, F.S.MERRITT, H.MES, N.MEYER, A.MICHELINI, S.MIHARA, G.MIKENBERG, D.J.MILLER, S.MOED, W.MOHR, T.MORI, A.MUTTER, K.NAGAI, I.NAKAMURA, H.NANJO, H.A.NEAL, R.NISIUS, S.W.O’NEALE, A.OH, M.J.OREGLIA, S.ORITO, C.PAHL, G.P´ASZTOR, J.R.PATER, J.E.PILCHER, J.PINFOLD, D.E.PLANE, O.POOTH, M.PRZYBYCIE´N, A.QUADT, K.RABBERTZ, C.REMBSER, P.RENKEL, J.M.RONEY, A.M.ROSSI, Y.ROZEN, K.RUNGE, K. SACHS, T. SAEKI, E.K.G. SARKISYAN, A.D. SCHAILE, O. SCHAILE, P. SCHARFF-HANSEN, J. SCHIECK, T. SCH¨ORNER-SADENIUS, M. SCHR¨ODER, M. SCHUMACHER, W.G. SCOTT, R. SEUSTER, T.G. SHEARS, B.C. SHEN, P. SHERWOOD, A. SKUJA, A.M. SMITH, R. SOBIE, S. S¨OLDNER-REMBOLD, F. SPANO, A. STAHL, D. STROM, R. STR¨OHMER, S.TAREM, M.TASEVSKY, R.TEUSCHER, M.A.THOMSON, E.TORRENCE, D.TOYA, P.TRAN, I.TRIGGER, Z.TR´OCS´ANYI, E.TSUR, M.F.TURNER-WATSON, I.UEDA, B.UJV´ARI, C.F.VOLLMER, P.VANNEREM, R.V´ERTESI, M.VERZOCCHI, H.VOSS, J.VOSSEBELD, C.P.WARD, D.R.WARD, P.M.WATKINS, A.T.WATSON, N.K.WATSON, P.S.WELLS, T.WENGLER, N.WERMES, G.W.WILSON, J.A.WILSON, G.WOLF, T.R.WYATT, S.YAMASHITA, D. ZER-ZION, L. ZIVKOVIC, and OPAL Collaboration
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hadron, FOS: Physical sciences, Fermion, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Calibration, Radiative transfer, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Beam energy
Abstract: We present a determination of the LEP beam energy using "radiative return" fermion-pair events recorded at centre-of-mass energies from 183 GeV to 209 GeV. We find no evidence of a disagreement between the OPAL data and the LEP Energy Workings Group's standard calibration. Including the energy- averaged 11 MeV uncertainty in the standard determination, the beam energy we obtain from the OPAL data is higher than that obtained from the LEP calibration by 0+-34(stat.)+-27(syst.)MeV, Comment: 24 pages, 5 figures, Submitted to Phys. Letts. B
Published: 2004
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30. Multi-photon events with large missing energy in e+e− collisions at s=192–209 GeV

Author: James Pinfold, R. Seuster, P. Scharff-Hansen, A. M. Smith, Andris Skuja, Tetsuro Mashimo, M. F. Turner-Watson, N. Meyer, M. Kupper, Daniel Lellouch, Takehiko Mori, L. Brigliadori, T. Behnke, S. W. O'Neale, P. O. Günther, J. Goldberg, M. Boutemeur, F. S. Merritt, K. J. Anderson, Thorsten Wengler, B. C. Shen, M. Donkers, Yoram Rozen, Siegfried Bethke, J. A. McKenna, Tara Shears, W. G. Scott, S. Yamashita, Junichi Kanzaki, Silvia Arcelli, J. W. Gary, P. Igo-Kemenes, K. Buesser, M. Gruwé, K. Ishii, H. Jeremie, Gideon Bella, Gianni Masetti, C. Y. Chang, R. M. Brown, Lorne Levinson, Christoph Rembser, Christoph Geich-Gimbel, Teresa Barillari, H. J. Burckhart, A. Csilling, S. Moed, Gabriele Benelli, Guenter Duckeck, D. Axen, Dezso Horvath, Erez Etzion, Richard Nisius, Graham Wilson, I. R. Bailey, O. Schaile, Oana Elena Vickey Boeriu, Raimund Ströhmer, Stefan Kluth, T. Kuhl, Shlomit Tarem, P. Mättig, Shoji Asai, Marco Cuffiani, Shlomo Dado, Richard Teuscher, A. J. Martin, F. Spano, M. J. Oreglia, M. Hauschild, M. Giunta, D. Zer-Zion, Robert McPherson, L. Zivkovic, Lutz Feld, D. Toya, P. J. Bell, G. Gaycken, W. Mader, Beatrix Dienes, F. K. Loebinger, C. Pahl, Giora Mikenberg, M. Schumacher, Matthias Schröder, Alexander Oh, J. R. Carter, W. Menges, Otmar Biebel, Paolo Giacomelli, Ivor Fleck, J. Ludwig, K. Runge, P. Bock, Georges Azuelos, T. R. Wyatt, I. Nakamura, D. Lanske, T. R. Junk, A. D. Schaile, Joleen Pater, Edward K. G. Sarkisyan, Gabriella Pasztor, K. Hoffman, E. Tsur, Gregor Herten, C. M. Hawkes, E. A. De Wolf, P. Vannerem, H. Nanjo, T. Schörner-Sadenius, Fabrizio Fabbri, A. Frey, Balazs Ujvari, H. A. Neal, Isabel Marian Trigger, K. W. Bell, A. Gupta, C. F. Vollmer, C. P. Ward, P. Gagnon, A. Harel, J. E. Pilcher, J. C. Hill, George Lafferty, Norbert Wermes, T. Kawamoto, Jochen Schieck, Ikuo Ueda, D. M. Strom, R. J. Barlow, J. Lu, Tobias Kramer, P. Amaral, Satoshi Mihara, S. Söldner-Rembold, Gunter Wolf, S. Orito, Zoltan Laszlo Trocsanyi, Kiyotomo Kawagoe, Gideon Alexander, D. Karlen, Frank Fiedler, B. Poli, R. K. Keeler, Dave Charlton, P. S. Wells, Arnulf Quadt, H. Mes, P. M. Watkins, A. T. Watson, Klaus Rabbertz, I. P. Duerdoth, S. Braibant, P. Renkel, Stephen Lloyd, P. Sherwood, Achim Stahl, Oliver Pooth, Ehud Duchovni, John Allison, D. E. Plane, N. Kanaya, A. Michelini, R. G. Kellogg, M. Hamann, R. D. Heuer, Csaba Hajdu, T. Kobayashi, A. Ludwig, Stefano Marcellini, Claudia Ciocca, James Letts, R. Vértesi, R. J. Sobie, Joost Vossebeld, Klaus Desch, P. Tran, K. Sachs, Philip Bechtle, Gordon H. Hanson, D. R. Ward, M. Ford, N. K. Watson, R. J. Batley, S. Campana, C. Ainsley, J. von Krogh, R. J. Hawkings, J. Dubbert, R. K. Carnegie, J. A. Wilson, M. A. Thomson, E. K. U. Gross, Eric Torrence, D. J. Miller, R. J. Hemingway, J. Lillich, B. W. Kennedy, P. Jovanovic, Peter Krieger, M. Przybycień, H. Landsman, A. A. Carter, E. L. Barberio, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, J. M. Roney, M. Tasevsky, Koichi Nagai, W. Mohr, J. Grunhaus, A. Mutter, Sachio Komamiya, K. Kruger, T. Saeki, J. G. Layter, Alain Bellerive, G. Anagnostou, H. Voss, G. Giacomelli, Pamela Ferrari, A. De Roeck, M. Kobel, and Frans Meijers
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Missing energy, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Nuclear physics, Massless particle, Pair production, Excited state, 0103 physical sciences, Neutralino, Gravitino, 010306 general physics, Bhabha scattering
Abstract: Events with a final state consisting of two or more photons and large missing transverse energy have been observed in e + e − collisions at centre-of-mass energies in the range 192–209 GeV using the OPAL detector at LEP. Cross-section measurements are performed within the kinematic acceptance of the selection and compared with the expectations from the Standard Model process e + e − → ν ν ¯ γ γ ( γ ) . No evidence for new physics contributions to this final state is observed. Upper limits on σ ( e + e − → X X ) ⋅ BR 2 ( X → Y γ ) are derived for the case of stable and invisible Y. In the case of massive Y the combined limits obtained from all the data range from 10 to 60 fb, while for the special case of massless Y the range is 20 to 40 fb. The limits apply to pair production of excited neutrinos ( X = ν * , Y = ν ), to neutralino production ( X = χ ˜ 2 0 , Y = χ ˜ 1 0 ) and to supersymmetric models in which X = χ ˜ 1 0 and Y = G ˜ is a light gravitino.
Published: 2004

31. Flavour independent search for Higgs bosons decaying into hadronic final states in e+e− collisions at LEP

Author: Silvia Arcelli, N. Kanaya, Daniel Lellouch, Erez Etzion, Gordon H. Hanson, M. Ford, Takehiko Mori, A. Okpara, Stefan Kluth, Shlomit Tarem, T. R. Junk, Christoph Geich-Gimbel, Gregor Herten, R. M. Brown, Lorne Levinson, J. Böhme, M. Giunta, Gianni Masetti, C. Y. Chang, Alexander Oh, C. Pahl, T. Behnke, A. J. Martin, Georges Azuelos, E. Tsur, C. M. Hawkes, J. Goldberg, A. Hocker, S. Moed, G. D. Lafferty, S. Yamashita, E. K. U. Gross, I. R. Bailey, Gideon Bella, H. J. Burckhart, I. Nakamura, D. Lanske, D. R. Ward, K. Hoffman, H. Mes, P. Igo-Kemenes, A. Mutter, J. E. Pilcher, A. D. Schaile, Isabel Marian Trigger, K. W. Bell, M. A. Thomson, Robert McPherson, Gabriella Pasztor, P. Vannerem, Fabrizio Fabbri, A. Frey, Raimund Ströhmer, R. J. Hemingway, I. P. Duerdoth, M. Gruwé, K. Ishii, H. Jeremie, P. Gagnon, S. Braibant, James Pinfold, D. Zer-Zion, W. Mader, J. C. Hill, Lutz Feld, B. W. Kennedy, F. K. Loebinger, J. Lillich, A. Harel, Thorsten Wengler, R. Seuster, Tobias Kramer, Ikuo Ueda, D. M. Strom, D. E. Plane, Klaus Rabbertz, Ivor Fleck, Yoram Rozen, R. K. Keeler, Christoph Rembser, J. M. Roney, M. Boutemeur, F. S. Merritt, J. Lu, Joleen Pater, Edward K. G. Sarkisyan, C. P. Ward, Zoltan Laszlo Trocsanyi, B. Poli, Richard Teuscher, Stephen Lloyd, B. C. Shen, P. Jovanovic, Tara Shears, M. Tasevsky, Beatrix Dienes, Richard Nisius, M. Donkers, P. Tran, O. Schaile, M. Przybycień, A. Klier, R. J. Batley, Balazs Ujvari, H. A. Neal, Arnulf Quadt, Koichi Nagai, W. Mohr, Marco Cuffiani, S. Söldner-Rembold, Gabriele Benelli, Siegfried Bethke, W. G. Scott, Peter Krieger, Junichi Kanzaki, J. W. Gary, P. M. Watkins, T. Kuhl, Paolo Giacomelli, A. A. Carter, Gunter Wolf, N. K. Watson, G. Gaycken, J. A. McKenna, J. Grunhaus, L. Brigliadori, M. Hamann, K. Buesser, M. Schumacher, M. Hauschild, D. Karlen, P. Renkel, Oliver Pooth, C. F. Vollmer, E. A. De Wolf, John Allison, Teresa Barillari, M. Verzocchi, S. W. O'Neale, P. O. Günther, A. Csilling, C. Ainsley, M. J. Oreglia, Dezso Horvath, Stefano Rosati, Jochen Schieck, R. J. Sobie, R. J. Barlow, P. Scharff-Hansen, E. Torrence, A. Gupta, Dave Charlton, P. F. Åkesson, Giovanni Abbiendi, D. Axen, Oana Elena Vickey Boeriu, P. Amaral, Gideon Alexander, K. J. Anderson, F. Spano, R. G. Kellogg, Joost Vossebeld, Sachio Komamiya, Graham Wilson, Matthias Schröder, Klaus Desch, P. J. Bell, Peter Sherwood, Csaba Hajdu, L. Zivkovic, D. J. Miller, Stefano Marcellini, J. Ludwig, P. Mättig, Shoji Asai, Satoshi Mihara, Shlomo Dado, Ehud Duchovni, A. M. Smith, J. R. Carter, Katja Klein, K. Runge, P. Bock, Achim Stahl, James Letts, W. Menges, Otmar Biebel, D. Waller, K. Kruger, T. Saeki, R. D. Heuer, A. Michelini, Andris Skuja, T. Schörner-Sadenius, J. von Krogh, H. Landsman, Guenter Duckeck, Kiyotomo Kawagoe, P. S. Wells, Frank Fiedler, D. Toya, T. Kobayashi, Tetsuro Mashimo, M. F. Turner-Watson, A. Ludwig, Claudia Ciocca, K. Sachs, H. Nanjo, Terry Richard Wyatt, A. T. Watson, S. Campana, Giora Mikenberg, Philip Bechtle, M. Kupper, E. L. Barberio, R. J. Hawkings, Norbert Wermes, T. Kawamoto, D. Wetterling, S. Orito, J. Dubbert, R. K. Carnegie, J. A. Wilson, H. Voss, G. Giacomelli, A. De Roeck, M. Kobel, Frans Meijers, Alain Bellerive, G. Anagnostou, Pamela Ferrari, J. G. Layter, and R. Vértesi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Hadron, Scalar boson, 01 natural sciences, Standard Model, Nuclear physics, Pair production, 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Boson, Event generator
Abstract: A search for the Higgsstrahlung process e + e − → hZ is described, where the neutral Higgs boson h is assumed to decay into hadronic final states. In order to be sensitive to a broad range of models, the search is performed independent of the flavour content of the Higgs boson decay. The analysis is based on e + e − collision data collected by the OPAL detector at energies between 192 and 209 GeV. The search does not reveal any significant excess over the Standard Model background prediction. Results are combined with previous searches at energies around 91 and at 189 GeV. A limit is set on the product of the cross-section and the hadronic branching ratio of the Higgs boson, as a function of the Higgs boson mass. Assuming the hZ coupling predicted by the Standard Model, and a Higgs boson decaying only into hadronic final states, a lower bound of 104 GeV / c 2 is set on the mass at the 95% confidence level.
Published: 2004

32. Study of Bose-Einstein correlations in ${\rm e}^ + {\rm e}^-\to {\rm W}^ + {\rm W}^-$ events at LEP

Author: N. Kanaya, Christoph Geich-Gimbel, H. Mes, I. P. Duerdoth, M. J. Oreglia, M. A. Thomson, E. K. U. Gross, Shlomo Dado, S. Braibant, Alexander Oh, R. M. Brown, Lorne Levinson, L. Zivkovic, M. Przybycień, Tara Shears, T. Barillari, Guenter Duckeck, M. Hamann, J. Grunhaus, J. R. Carter, A. Csilling, I. Nakamura, D. Lanske, J. M. Roney, A. A. Carter, B. Poli, Ehud Duchovni, M. Tasevsky, Richard Teuscher, D. Toya, D. R. Ward, Koichi Nagai, I. R. Bailey, Lutz Feld, W. Mohr, M. Verzocchi, S. Yamashita, P. F. Åkesson, Giovanni Abbiendi, Thorsten Wengler, K. Hoffman, P. Igo-Kemenes, R. J. Sobie, C. Pahl, A. Michelini, R. J. Batley, Joost Vossebeld, H. Landsman, W. Menges, Otmar Biebel, Satoshi Mihara, K. Ishii, H. Jeremie, Klaus Desch, Georges Azuelos, E. Tsur, C. F. Vollmer, Gideon Bella, T. R. Wyatt, P. Mättig, Shoji Asai, D. Zer-Zion, Giora Mikenberg, M. Boutemeur, F. S. Merritt, Katja Klein, D. E. Plane, C. M. Hawkes, Pamela Ferrari, J. G. Layter, J. von Krogh, H. J. Burckhart, N. K. Watson, Matthias Schröder, James Pinfold, R. Seuster, G. Gaycken, F. K. Loebinger, Isabel Marian Trigger, K. W. Bell, Jochen Schieck, T. Kobayashi, O. Schaile, M. Schumacher, P. Gagnon, R. J. Hawkings, E. L. Barberio, J. A. McKenna, Frank Fiedler, A. Ludwig, R. J. Barlow, Kiyotomo Kawagoe, Ivor Fleck, J. C. Hill, Yoram Rozen, L. Brigliadori, Tobias Kramer, P. Tran, T. Kuhl, B. C. Shen, E. A. De Wolf, S. Campana, Joleen Pater, P. S. Wells, C. Ainsley, T. Schörner-Sadenius, M. Donkers, J. Dubbert, R. K. Carnegie, Siegfried Bethke, Norbert Wermes, Edward K. G. Sarkisyan, A. T. Watson, P. Amaral, S. W. O'Neale, Andris Skuja, W. G. Scott, Junichi Kanzaki, J. A. Wilson, T. Kawamoto, J. Goldberg, K. Buesser, J. W. Gary, A. D. Schaile, Gabriella Pasztor, Gabriele Benelli, Tetsuro Mashimo, M. F. Turner-Watson, Daniel Lellouch, A. J. Martin, P. O. Günther, Balazs Ujvari, A. Mutter, D. J. Miller, Zoltan Laszlo Trocsanyi, Takehiko Mori, P. Vannerem, H. A. Neal, A. Harel, S. Orito, N. Meyer, Dezso Horvath, Ikuo Ueda, D. M. Strom, J. Lu, M. Kupper, K. J. Anderson, Gideon Alexander, C. P. Ward, W. Mader, Robert McPherson, Dave Charlton, S. Söldner-Rembold, Alain Bellerive, Gianni Masetti, C. Y. Chang, Fabrizio Fabbri, A. Frey, P. Scharff-Hansen, E. Torrence, A. Gupta, Sachio Komamiya, S. Moed, R. D. Heuer, T. R. Junk, A. M. Smith, R. J. Hemingway, G. Anagnostou, Klaus Rabbertz, Stephen Lloyd, Oliver Pooth, Gregor Herten, K. Kruger, T. Saeki, H. Voss, John Allison, J. Lillich, B. W. Kennedy, Raimund Ströhmer, G. Giacomelli, P. Jovanovic, A. De Roeck, M. Kobel, Christoph Rembser, Peter Krieger, J. E. Pilcher, R. G. Kellogg, G. W. Wilson, Frans Meijers, M. Hauschild, Beatrix Dienes, Csaba Hajdu, Erez Etzion, Stefano Marcellini, Stefan Kluth, Shlomit Tarem, James Letts, R. Vértesi, M. Giunta, T. Behnke, Gordon H. Hanson, M. Ford, Thomas Kress, Gunter Wolf, D. Karlen, D. Axen, Oana Elena Vickey Boeriu, F. Spano, Peter Sherwood, J. Ludwig, K. Runge, P. Bock, G. D. Lafferty, R. K. Keeler, Arnulf Quadt, P. M. Watkins, P. Renkel, M. Gruwé, Richard Nisius, Marco Cuffiani, P. J. Bell, Achim Stahl, H. Nanjo, Claudia Ciocca, K. Sachs, Philip Bechtle, and Paolo Giacomelli
Subjects: Condensed Matter::Quantum Gases, Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Monte Carlo method, High Energy Physics::Experiment, Bose–Einstein correlations, Engineering (miscellaneous), Bar (unit), Boson
Abstract: Bose-Einstein correlations between like-sign charged-particle pairs in e(+)e(-) --> W+ W- events recorded with the OPAL detector at LEP at centre-of-mass energies between 183 GeV and 209 GeV are studied. Recently proposed methods which allow direct searches for correlations in the data via distributions of test variables are used to investigate the presence of correlations between hadrons originating from different W bosons in W+W- --> q (q) over barq (q) over bar events. Within the statistics of the data sample no evidence for inter - WW Bose-Einstein correlations is obtained. The data are also compared with predictions of a recent implementation of Bose-Einstein correlation effects in the Monte Carlo model PYTHIA.
Published: 2004

33. Evidence for a narrow baryonic state decaying to K0Sp and K0Sp̄ in deep inelastic scattering at HERA

Author: S. Chekanov, M. Derrick, J.H. Loizides, S. Magill, S. Miglioranzi, B. Musgrave, J. Repond, R. Yoshida, M.C.K. Mattingly, N. Pavel, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, A. Margotti, A. Montanari, R. Nania, F. Palmonari, A. Pesci, L. Rinaldi, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, I. Brock, S. Goers, H. Hartmann, E. Hilger, P. Irrgang, H.-P. Jakob, O. Kind, U. Meyer, E. Paul, J. Rautenberg, R. Renner, A. Stifutkin, J. Tandler, K.C. Voss, M. Wang, D.S. Bailey, N.H. Brook, J.E. Cole, G.P. Heath, T. Namsoo, S. Robins, M. Wing, M. Capua, A. Mastroberardino, M. Schioppa, G. Susinno, J.Y. Kim, I.T. Lim, K.J. Ma, M.Y. Pac, M. Helbich, Y. Ning, Z. Ren, W.B. Schmidke, F. Sciulli, J. Chwastowski, A. Eskreys, J. Figiel, A. Galas, K. Olkiewicz, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bołd, I. Grabowska-Bołd, D. Kisielewska, A.M. Kowal, M. Kowal, J. Łukasik, M. Przybycień, L. Suszycki, D. Szuba, J. Szuba, A. Kotański, W. Słomiński, V. Adler, U. Behrens, I. Bloch, K. Borras, V. Chiochia, D. Dannheim, G. Drews, J. Fourletova, U. Fricke, A. Geiser, P. Göttlicher, O. Gutsche, T. Haas, W. Hain, S. Hillert, C. Horn, B. Kahle, U. Kötz, H. Kowalski, G. Kramberger, H. Labes, D. Lelas, H. Lim, B. Löhr, R. Mankel, I.-A. Melzer-Pellmann, C.N. Nguyen, D. Notz, A.E. Nuncio-Quiroz, A. Polini, A. Raval, L. Rurua, U. Schneekloth, U. Stösslein, G. Wolf, C. Youngman, W. Zeuner, S. Schlenstedt, G. Barbagli, E. Gallo, C. Genta, P.G. Pelfer, A. Bamberger, A. Benen, F. Karstens, D. Dobur, N.N. Vlasov, M. Bell, P.J. Bussey, A.T. Doyle, J. Ferrando, J. Hamilton, S. Hanlon, D.H. Saxon, I.O. Skillicorn, I. Gialas, T. Carli, T. Gosau, U. Holm, N. Krumnack, E. Lohrmann, M. Milite, H. Salehi, P. Schleper, T. Schörner-Sadenius, S. Stonjek, K. Wichmann, K. Wick, A. Ziegler, Ar. Ziegler, C. Collins-Tooth, C. Foudas, R. Gonçalo, K.R. Long, A.D. Tapper, P. Cloth, D. Filges, M. Kataoka, K. Nagano, K. Tokushuku, S. Yamada, Y. Yamazaki, A.N. Barakbaev, E.G. Boos, N.S. Pokrovskiy, B.O. Zhautykov, D. Son, K. Piotrzkowski, F. Barreiro, C. Glasman, O. González, L. Labarga, J. del Peso, E. Tassi, J. Terrón, M. Zambrana, M. Barbi, F. Corriveau, S. Gliga, J. Lainesse, S. Padhi, D.G. Stairs, R. Walsh, T. Tsurugai, A. Antonov, P. Danilov, B.A. Dolgoshein, D. Gladkov, V. Sosnovtsev, S. Suchkov, R.K. Dementiev, P.F. Ermolov, I.I. Katkov, L.A. Khein, I.A. Korzhavina, V.A. Kuzmin, B.B. Levchenko, O.Yu. Lukina, A.S. Proskuryakov, L.M. Shcheglova, S.A. Zotkin, I. Abt, C. Büttner, A. Caldwell, X. Liu, J. Sutiak, N. Coppola, S. Grijpink, E. Koffeman, P. Kooijman, E. Maddox, A. Pellegrino, S. Schagen, H. Tiecke, M. Vázquez, L. Wiggers, E. de Wolf, N. Brümmer, B. Bylsma, L.S. Durkin, T.Y. Ling, A.M. Cooper-Sarkar, A. Cottrell, R.C.E. Devenish, B. Foster, G. Grzelak, C. Gwenlan, T. Kohno, S. Patel, P.B. Straub, R. Walczak, A. Bertolin, R. Brugnera, R. Carlin, F. Dal Corso, S. Dusini, A. Garfagnini, S. Limentani, A. Longhin, A. Parenti, M. Posocco, L. Stanco, M. Turcato, E.A. Heaphy, F. Metlica, B.Y. Oh, J.J. Whitmore, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, C. Cormack, J.C. Hart, N.A. McCubbin, C. Heusch, I.H. Park, H. Abramowicz, A. Gabareen, S. Kananov, A. Kreisel, A. Levy, M. Kuze, T. Fusayasu, S. Kagawa, T. Tawara, T. Yamashita, R. Hamatsu, T. Hirose, M. Inuzuka, H. Kaji, S. Kitamura, K. Matsuzawa, M. Costa, M.I. Ferrero, V. Monaco, R. Sacchi, A. Solano, M. Arneodo, M. Ruspa, T. Koop, J.F. Martin, A. Mirea, J.M. Butterworth, R. Hall-Wilton, T.W. Jones, M.S. Lightwood, M.R. Sutton, C. Targett-Adams, J. Ciborowski, R. Ciesielski, P. Łużniak, R.J. Nowak, J.M. Pawlak, J. Sztuk, T. Tymieniecka, A. Ukleja, J. Ukleja, A.F. Żarnecki, M. Adamus, P. Plucinski, Y. Eisenberg, D. Hochman, U. Karshon, M. Riveline, A. Everett, L.K. Gladilin, D. Kçira, S. Lammers, L. Li, D.D. Reeder, M. Rosin, P. Ryan, A.A. Savin, W.H. Smith, S. Dhawan, S. Bhadra, C.D. Catterall, S. Fourletov, G. Hartner, S. Menary, M. Soares, J. Standage, Zeus (IHEF, IoP, FNWI), and UCL - SC/PHYS - Département de physique
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Hadron, FOS: Physical sciences, HERA, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Resonance (particle physics), Pentaquark, 3. Good health, High Energy Physics - Experiment, Nuclear physics, Baryon, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment
Abstract: A resonance search has been made in the K0s p and K0s pbar invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb-1. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300-318 GeV for exchanged photon virtuality, Q2, above 1 GeV2. Recent results from fixed-target experiments give evidence for a narrow baryon resonance decaying to K+ n and K0s p, interpreted as a pentaquark. The results presented here support the existence of such state, with a mass of 1521.5+/-1.5(stat.)^{+2.8}_{-1.7}(syst.) MeV and a Gaussian width consistent with the experimental resolution of 2 MeV. The signal is visible at high Q2 and, for Q2>20 GeV2, contains 221+/-48 events. The probability of a similar signal anywhere in the range 1500-1560 MeV arising from fluctuations of the background is below 6x10^{-5}., 4 eps figures, 15 pages, 1 table, accepted by Physics Letters B
Published: 2004
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34. Study of tau-pair production at HERA

Author: Katsuo Tokushuku, A. Longhin, F. Dal Corso, P. Stopa, A. Nigro, Francois Corriveau, C. Uribe-Estrada, R. Yoshida, F. Mohamad Idris, M. Jüngst, Ben Bylsma, D. Szuba, A. Kotański, O. Gogota, Y. Eisenberg, I. M. Gregor, M. Wlasenko, Af Zarnecki, H. Hartmann, D. Hochman, N. Brümmer, J. M. Pawlak, Anselmo Margotti, J. Grebenyuk, Alexander Tapper, Edouard Boos, T. Tsurugai, L.W. Wiggers, A. Garfagnini, Claudia Glasman, S. Yamada, A. Keramidas, V. Drugakov, N. Zhmak, J. Szuba, A. A. Savin, A. Bertolin, U. Samson, Lev Khein, R. Mankel, Wolfgang Lohmann, Halina Abramowicz, T. Tymieniecka, Krzysztof Piotrzkowski, Allen Caldwell, S. Fourletov, Iwona Grabowska-Bold, L. Zawiejski, S. Kananov, E. Brownson, M. Turcato, A. Antonov, R. Walczak, Cd Catterall, Ada Solano, Kunihiro Nagano, Y. D. Ri, T. Namsoo, Yuji Yamazaki, S. Limentani, Rosario Nania, D. Nicholass, L. M. Shcheglova, G. D'Agostini, Igor Katkov, T. Y. Ling, Jan Figiel, P. Plucinski, B. Musgrave, P. Kaur, Zainol Abidin Ibrahim, M. Derrick, I. Singh, Kenneth Long, Michele Arneodo, N. Bartosik, G. Grigorescu, I. Gialas, Giuseppe Iacobucci, G. Bari, H.G.J.M. Tiecke, A. Parenti, W. Perlanski, G. F. Susinno, P. Roloff, Giuseppe Barbagli, P. Göttlicher, B. B. Levchenko, J. Maeda, Giovanna Bruni, A. Salii, A. Stifutkin, L. Stanco, R. Ingbir, D. Notz, H.-P. Jakob, Jose Repond, D.S. Zotkin, A. Eskreys, Shinichi Shimizu, Gabriella Sartorelli, Uta Klein, I. O. Skillicorn, J. Sztuk-Dambietz, A. E. Nuncio-Quiroz, W. A. T. Wan Abdullah, R. Brugnera, N. Okazaki, T. W. Jones, Janna Katharina Behr, O. Viazlo, K. Oliver, O. Tomalak, U. Kötz, D. Boscherini, Ewelina Lobodzinska, V. Sosnovtsev, Y. Aushev, M. Costa, J. F. Martin, Y. Onishchuk, Yu. A. Golubkov, E. Paul, Kerstin Borras, D. Bot, Fernando Barreiro, M. Vázquez, John Morris, Dong-Chul Son, O. Yu. Lukina, B. Reisert, T. Kanno, D. Gladkov, Y. Ning, U. Schneekloth, Marco Schioppa, W. Słomiński, P. G. Pelfer, Ulf Behrens, Federico Cindolo, H. Kowalski, D. D. Reeder, J. Chwastowski, J. Malka, P.F. Ermolov, S.I. Suchkov, K. Olkiewicz, Guenter Wolf, B. Brzozowska, M. Jimenez, S. Kitamura, J. Tomaszewska, S. Fang, Tobias M. Haas, R. J. Nowak, C. Blohm, Alexander Spiridonov, I. A. Melzer-Pellmann, B. Kahle, Ramoona Shehzadi, E. Ron, Roberto Carlin, Sebastian Mergelmeyer, Andrea Contin, G. Hartner, Anna Mastroberardino, R.C.E. Devenish, Didar Dobur, R. Hori, O. Zenaiev, Marcella Capua, P. Łużniak, Mykhailo Lisovyi, Amanda Cooper-Sarkar, Valentina Sola, F. J. Sciulli, V. Monaco, W. Hain, T. Schörner-Sadenius, J. Ciborowski, James Ferrando, O. Volynets, L. Suszycki, N.N. Vlasov, J. Whyte, Silvia Miglioranzi, Manjit Kaur, Alessandro Montanari, T. Theedt, S. K. Boutle, Hartmut Stadie, Leszek Adamczyk, B. Löhr, S. Magill, A. Polini, Matthew Forrest, E. Hilger, Ie. Korol, M. Adamus, Zhongliang Ren, K. Wrona, B. Foster, W. B. Schmidke, U. Karshon, A.G. Yagües-Molina, S. Dusini, K. Mujkic, G. Dolinska, J. Y. Kim, B.Y. Oh, Pietro Antonioli, L. K. Gladilin, W. H. Smith, M.I. Ferrero, R. K. Dementiev, K. Papageorgiu, Hanno Perrey, Elisabetta Gallo, J. Del Peso, A. Zichichi, S. Bhadra, O. Bolilyi, N.S. Pokrovskiy, O. Kuprash, Marcello Bindi, B. Pawlik, A. N. Barakbaev, V. Bokhonov, A. Pellegrino, F. Karstens, M.C.K. Mattingly, L. S. Durkin, R. Hamatsu, O. Bachynska, Els Koffeman, Peter Schleper, A. Stern, P. Kulinski, G. Marini, A. Galas, Wolfram Dietrich Zeuner, A. Bamberger, J.H. Loizides, R. Klanner, N. Coppola, J. Schwartz, G. Grzelak, Claire Gwenlan, F. Januschek, A. Raval, C. Zhou, Danuta Kisielewska, I. A. Korzhavina, A. Bruni, T. P. Stewart, D. Lontkovskyi, C. Youngman, L. Cifarelli, Z. Zulkapli, Enrico Tassi, J. J. Whitmore, A.G. Robertson, Mariusz Przybycien, M. Corradi, I. Kadenko, M. Zolko, M. Basile, K. Horton, Matthew Wing, V. Aushev, Sergei Chekanov, Dirk-Uwe Bartsch, A. Lee, L. Bellagamba, U. Noor, B.O. Zhautykov, B. Kamaluddin, S. Schlenstedt, P. J. Bussey, V. Schönberg, Jonathan Butterworth, John Hart, Vladyslav Libov, Ian Brock, A. Hüttmann, D. H. Saxon, I. Rubinsky, Robert Ciesielski, O. Behnke, A.S. Proskuryakov, S. De Pasquale, A. T. Doyle, R. Aggarwal, P.M. Kooijman, B. A. Dolgoshein, Orel Gueta, Andrii Verbytskyi, Marta Ruspa, Y. Iga, Achim Geiser, S. Fazio, Roberto Sacchi, H. Wolfe, Aharon Levy, Juan Terron, M. Kuze, S. Antonelli, E. Lohrmann, I. Makarenko, M. Ishitsuka, Grzegorz Gach, Tomasz Bold, Zeus (IHEF, IoP, FNWI), UAM. Departamento de Física Teórica, H. ABRAMOWICZ, L. ADAMCZYK, M. ADAMUS, R. AGGARWA, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, N. BARTOSIK, D. BARTSCH, M. BASILE, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, V. BOKHONOV, T. BOLD, O. BOLILYI, K. BONDARENKO, E.G. BOOS, K. BORRAS, D. BOSCHERINI, D. BOT, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P.J. BUSSEY, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C.D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DEL PESO, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, D. DOBUR, B.A. DOLGOSHEIN, G. DOLINSKA, A.T. DOYLE, V. DRUGAKOV, L.S. DURKIN, S. DUSINI, Y. EISENBERG, P.F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M.I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, YU.A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA-BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, O. GUETA, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, R. HORI, K. HORTON, A. HÜTTMANN, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H.-P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I.I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L.A. KHEIN, J.Y. KIM, D. KISIELEWSKA1, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, P. KOOIJMAN, I. KOROL, I.A. KORZHAVINA, A. KOTA´ NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, A. LEE, B.B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T.Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, O.YU. LUKINA, P. LU?ZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J.F. MARTIN, A. MASTROBERARDINO, M.C.K. MATTINGLY, I.-A. MELZER-PELLMANN, S. MERGELMEYER, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J.D. MORRIS, K. MUJKIC, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, T. NOBE, U. NOOR, D. NOTZ, R.J. NOWAK, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, YU. ONISHCHUK, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J.M. PAWLAK, B. PAWLIK, P.G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N.S. POKROVSKIY, A. POLINI, A.S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D.D. REEDER, B. REISERT, Z. REN1, J. REPOND, Y.D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, G. SARTORELLI, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER-SADENIUS, J. SCHWARTZ, F. SCIULLI, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I.O. SKILLICORN, W. SLOMI´ NSKI, W.H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T.P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK-DAMBIETZ, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE-ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, O. VIAZLO, N.N. VLASOV, O. VOLYNETS, R.WALCZAK, W.A.T. WAN ABDULLAH, J.J.WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K.WRONA, A.G. YAGÜES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B.O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D.S. ZOTKIN, and Z. ZULKAPLI
Subjects: Particle physics, Nuclear and High Energy Physics, HERA, FOS: Physical sciences, 01 natural sciences, Standard Model, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Lepton-nucleon scattering, 0103 physical sciences, Bethe-Heitler processes, Tau-pair production, Invariant mass, ddc:530, High Energy Physics, 010306 general physics, ZEUS Collaboration, Physics, Muon, ZEUS (particle detector), Luminosity (scattering theory), 010308 nuclear & particles physics, Física, Pair production, High Energy Physics::Experiment, Lepton, ZEUS experiment
Abstract: Journal of High Energy Physics 2011.2 (2011): 117 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA), A study of events containing two tau leptons with high transverse momentum has been performed with the ZEUS detector at HERA, using a data sample corresponding to an integrated luminosity of 0.33 fb-1. The tau candidates were identified from their decays into electrons, muons or hadronic jets. The number of tau-pair candidates has been compared with the prediction from the Standard Model, where the largest contribution is expected from Bethe-Heitler processes. The total visible cross section was extracted. Standard Model expectations agree well with the measured distributions, also at high invariant mass of the tau pair.
Published: 2011

35. Search for the single production of doubly-charged Higgs bosons and constraints on their couplings from Bhabha scattering

Author: C. F. Vollmer, Jochen Schieck, R. J. Barlow, Alexander Oh, I. Nakamura, D. Lanske, Graham Wilson, Gunter Wolf, K. Stephens, N. Kanaya, Tara Shears, Shlomo Dado, D. Karlen, H. Mes, I. P. Duerdoth, S. Braibant, K. Hoffman, A. Leins, P. Gagnon, S. Yamashita, P. Igo-Kemenes, K. Ishii, H. Jeremie, Richard Teuscher, D. Toya, Giora Mikenberg, Arnulf Quadt, O. Schaile, H. Landsman, P. M. Watkins, J. Grunhaus, P. J. Bell, L. Brigliadori, T. Kuhl, R. J. Batley, M. J. Oreglia, A. D. Schaile, Gabriella Pasztor, P. Vannerem, D. R. Ward, Yoram Rozen, Zoltan Laszlo Trocsanyi, Dong Hee Kim, G. Gaycken, L. L. Kormos, G. Anagnostou, Richard J. K. Taylor, Gideon Bella, James Pinfold, R. Seuster, L. Zivkovic, E. L. Barberio, P. Renkel, M. Schumacher, A. J. Martin, H. J. Burckhart, M. Groll, Silvia Arcelli, D. E. Plane, S. W. O'Neale, C. P. Ward, Satoshi Mihara, P. O. Günther, Erez Etzion, J. R. Carter, G. N. Patrick, Katja Klein, Junichi Kanzaki, J. Polok, Stefan Kluth, Shlomit Tarem, W. Menges, Otmar Biebel, S. Söldner-Rembold, Sachio Komamiya, K. Buesser, E. A. De Wolf, Pamela Ferrari, J. G. Layter, M. Giunta, Georges Azuelos, K. J. Anderson, Daniel Lellouch, P. Amaral, J. A. McKenna, W. Mader, E. Tsur, C. M. Hawkes, J. Goldberg, Frank Fiedler, H. Nanjo, D. Waller, Takehiko Mori, A. Okpara, D. Axen, Oana Elena Vickey Boeriu, K. Kruger, T. Saeki, Gianni Masetti, C. Y. Chang, P. Tran, Matthias Schröder, Norbert Wermes, T. Kawamoto, C. Pahl, D. J. Miller, F. Spano, Peter Sherwood, Isabel Marian Trigger, K. W. Bell, G. D. Lafferty, S. Orito, H. Voss, T. J. McMahon, J. C. Hill, J. Ludwig, Christoph Rembser, P. Scharff-Hansen, K. Runge, S. Moed, P. Bock, Tobias Kramer, W. J. McDonald, B. C. Shen, P. F. Åkesson, Klaus Rabbertz, R. J. Hemingway, M. Donkers, Siegfried Bethke, M. A. Thomson, Stephen Lloyd, J. Dubbert, Robert Vertesi, R. K. Carnegie, T. Schörner-Sadenius, J. Lillich, G. Giacomelli, W. G. Scott, Dave Charlton, M. Gruwé, Raimund Ströhmer, A. M. Smith, A. Mutter, C. Hensel, A. De Roeck, M. Kobel, P. Jovanovic, E. K. U. Gross, Peter Krieger, J. W. Gary, Ehud Duchovni, Andris Skuja, T. Behnke, Frans Meijers, Guenter Duckeck, K. Harder, Richard Nisius, Tetsuro Mashimo, M. F. Turner-Watson, A. Macpherson, A. Michelini, Shoji Asai, Marek Tasevsky, Paolo Giacomelli, Dezso Horvath, R. D. Heuer, J. A. Wilson, Marco Cuffiani, M. Kupper, Beatrix Dienes, T. Kobayashi, S. Campana, J. M. Roney, R. M. Brown, Lorne Levinson, M. Harin-Dirac, Koichi Nagai, B. W. Kennedy, I. R. Bailey, W. Mohr, G. Karapetian, Gideon Alexander, Achim Stahl, E. Torrence, A. Gupta, A. Csilling, S. Rosati, A. Harel, Ikuo Ueda, D. M. Strom, J. Lu, M. Hamann, Richard Keeler, R. J. Sobie, Joost Vossebeld, Klaus Desch, T. R. Junk, P. S. Wells, Robert McPherson, J. von Krogh, Terry Richard Wyatt, A. T. Watson, Fabrizio Fabbri, A. Frey, R. J. Hawkings, D. Wetterling, M. Przybycień, A. A. Carter, M. Verzocchi, Giovanni Abbiendi, Christoph Geich-Gimbel, A. Fürtjes, Lutz Feld, M. Boutemeur, F. S. Merritt, Kiyotomo Kawagoe, G. P. Siroli, Christoph Schwick, Thorsten Wengler, B. Caron, Gabriele Benelli, M. Hauschild, Gregor Herten, J. E. Pilcher, N. K. Watson, C. Ainsley, P. Mättig, Alain Bellerive, B. Poli, K. Sachs, Philip Bechtle, Oliver Pooth, John Allison, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, James Letts, D. Zer-Zion, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, A. Klier, Balazs Ujvari, H. A. Neal, Gordon H. Hanson, and M. Ford
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Yukawa potential, FOS: Physical sciences, 01 natural sciences, Lepton number, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment, Lepton, Event generator, Bhabha scattering, Boson
Abstract: A search for single production of doubly-charged Higgs bosons has been performed using 600.7 pb^-1 of e+e- collision data with sqrt(s)=189--209GeV collected by the OPAL detector at LEP. No evidence for the existence of H++/-- is observed. Upper limits on the Yukawa coupling of the H++/-- to like-signed electron pairs are derived. Additionally, indirect constraints on the Yukawa coupling from Bhabha scattering, where the H++/-- would contribute via t-channel exchange, are derived for M(H++/--) < 2TeV. These are the first results for both a single production search and constraints from Bhabha scattering reported from LEP., 20 pages, 9 figures, Submitted to Phys. Lett. B
Published: 2003
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36. Search for stable and long-lived massive charged particles in e+e− collisions at =130209 GeV

Author: D. Axen, Oana Elena Vickey Boeriu, James Pinfold, W. J. McDonald, R. Seuster, C. F. Vollmer, F. Spano, Gideon Bella, H. J. Burckhart, Peter Sherwood, B. C. Shen, Jochen Schieck, P. Mättig, Shoji Asai, R. J. Barlow, J. Ludwig, K. Runge, P. Bock, A. D. Schaile, Gabriella Pasztor, G. P. Siroli, Daniel Lellouch, Christoph Schwick, M. Donkers, Takehiko Mori, A. Okpara, Siegfried Bethke, P. Vannerem, P. F. Åkesson, W. G. Scott, D. E. Plane, C. P. Ward, P. Tran, C. Hensel, S. Söldner-Rembold, J. W. Gary, H. Mes, Alexander Oh, Kiyotomo Kawagoe, J. Goldberg, L. L. Kormos, T. Behnke, Oliver Pooth, K. Hoffman, John Allison, I. Nakamura, H. Landsman, S. Yamashita, P. Igo-Kemenes, Ehud Duchovni, A. Leins, D. Lanske, I. P. Duerdoth, S. Braibant, Dave Charlton, A. J. Martin, W. Menges, Otmar Biebel, P. Gagnon, L. Brigliadori, R. K. Keeler, Guenter Duckeck, K. Ishii, H. Jeremie, Marek Tasevsky, Dezso Horvath, E. Torrence, A. Gupta, A. Csilling, Graham Wilson, M. Gruwé, N. K. Watson, Zoltan Laszlo Trocsanyi, Dong Hee Kim, Yoram Rozen, Shlomo Dado, Arnulf Quadt, W. Mader, P. M. Watkins, R. D. Heuer, Richard Nisius, D. Toya, A. Michelini, Tara Shears, R. G. Kellogg, E. L. Barberio, K. Harder, O. Schaile, T. Kuhl, T. Kobayashi, Christoph Rembser, Richard J. K. Taylor, Erez Etzion, Giora Mikenberg, R. J. Batley, Csaba Hajdu, Marco Cuffiani, Junichi Kanzaki, J. Polok, Stefano Marcellini, S. Campana, P. Renkel, R. M. Brown, Stefan Kluth, K. Buesser, G. Gaycken, C. Ainsley, Lorne Levinson, Silvia Arcelli, Shlomit Tarem, James Letts, P. J. Bell, M. A. Thomson, S. W. O'Neale, R. J. Hemingway, I. R. Bailey, Georges Azuelos, M. Schumacher, E. Tsur, E. K. U. Gross, J. Lillich, C. M. Hawkes, P. O. Günther, B. W. Kennedy, E. A. De Wolf, M. Giunta, P. Jovanovic, Isabel Marian Trigger, K. W. Bell, Norbert Wermes, Peter Krieger, T. Kawamoto, Gideon Alexander, Gordon H. Hanson, Gunter Wolf, H. Nanjo, P. Amaral, J. C. Hill, Tobias Kramer, Richard Teuscher, M. Ford, J. M. Roney, K. J. Anderson, C. Pahl, D. Karlen, Koichi Nagai, S. Orito, W. Mohr, Raimund Ströhmer, Klaus Rabbertz, B. Poli, Stephen Lloyd, T. R. Wyatt, George Lafferty, Satoshi Mihara, M. J. Oreglia, Katja Klein, K. Sachs, Philip Bechtle, L. Zivkovic, D. Zer-Zion, J. R. Carter, G. N. Patrick, F. K. Loebinger, Ivor Fleck, Frank Fiedler, K. Stephens, N. Kanaya, Joleen Pater, Edward K. G. Sarkisyan, A. Klier, Beatrix Dienes, Balazs Ujvari, H. A. Neal, M. Boutemeur, F. S. Merritt, Gianni Masetti, C. Y. Chang, D. R. Ward, J. A. McKenna, S. Moed, Christoph Geich-Gimbel, J. Grunhaus, A. Fürtjes, Lutz Feld, M. Hamann, Sachio Komamiya, R. J. Sobie, Thorsten Wengler, Joost Vossebeld, B. Caron, D. Waller, K. Kruger, T. Saeki, Klaus Desch, Gabriele Benelli, P. Scharff-Hansen, A. M. Smith, Andris Skuja, Tetsuro Mashimo, M. F. Turner-Watson, A. Macpherson, T. R. Junk, A. Mutter, M. Kupper, P. S. Wells, M. Hauschild, A. T. Watson, Matthias Schröder, T. J. McMahon, Achim Stahl, D. J. Miller, J. Dubbert, Robert Vertesi, R. K. Carnegie, S. Rosati, J. A. Wilson, Gregor Herten, Robert McPherson, G. Karapetian, A. Harel, T. Schörner-Sadenius, Alain Bellerive, Ikuo Ueda, D. M. Strom, J. Lu, Fabrizio Fabbri, A. Frey, J. E. Pilcher, M. Przybycień, A. A. Carter, M. Verzocchi, G. Anagnostou, Paolo Giacomelli, Giovanni Abbiendi, J. von Krogh, M. Harin-Dirac, R. J. Hawkings, D. Wetterling, Pamela Ferrari, J. G. Layter, H. Voss, G. Giacomelli, A. De Roeck, M. Kobel, and Frans Meijers
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Muon, 010308 nuclear & particles physics, Scalar (mathematics), Supersymmetry, 01 natural sciences, Electric charge, Charged particle, Nuclear physics, Chargino, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment, Lepton
Abstract: A search for stable and long-lived massive particles of electric charge |Q/e|=1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at centre-of-mass energies from 130 to 209 GeV. These particles are assumed to be pair-produced in e+e- collisions and not to interact strongly. No evidence for the production of these particles was observed. Model-independent upper limits on the production cross-section between 0.005 and 0.028 pb have been derived for scalar and spin-1/2 particles with charge +-1. Within the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM), this implies a lower limit of 98.0 (98.5) GeV on the mass of long-lived right (left)- handed scalar muons and scalar taus. Long-lived charged heavy leptons and charginos are excluded for masses below 102.0 GeV. For particles with fractional charge +-2/3, +-4/3, and +-5/3, the upper limit on the production cross-section varies between 0.005 and 0.020 pb. All mass and cross-section limits are derived at the 95% confidence level and are valid for particles with lifetimes longer than 10-6s. A search for stable and long-lived massive particles of electric charge | Q / e |=1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at centre-of-mass energies from 130 to 209 GeV. These particles are assumed to be pair-produced in e + e − collisions and not to interact strongly. No evidence for the production of these particles was observed. Model-independent upper limits on the production cross-section between 0.005 and 0.028 pb have been derived for scalar and spin-1/2 particles with charge ±1. Within the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM), this implies a lower limit of 98.0 (98.5) GeV on the mass of long-lived right- (left-)handed scalar muons and scalar taus. Long-lived charged heavy leptons and charginos are excluded for masses below 102.0 GeV. For particles with fractional charge ±2/3, ±4/3 and ±5/3, the upper limit on the production cross-section varies between 0.005 and 0.020 pb. All mass and cross-section limits are derived at the 95% confidence level and are valid for particles with lifetimes longer than 10 −6 s. A search for stable and long-lived massive particles of electric charge |Q/e|=1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at centre-of-mass energies from 130 to 209 GeV. These particles are assumed to be pair-produced in e+e- collisions and not to interact strongly. No evidence for the production of these particles was observed. Model-independent upper limits on the production cross-section between 0.005 and 0.028 pb have been derived for scalar and spin-1/2 particles with charge +-1. Within the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM), this implies a lower limit of 98.0 (98.5) GeV on the mass of long-lived right (left)- handed scalar muons and scalar taus. Long-lived charged heavy leptons and charginos are excluded for masses below 102.0 GeV. For particles with fractional charge +-2/3, +-4/3, and +-5/3, the upper limit on the production cross-section varies between 0.005 and 0.020 pb. All mass and cross-section limits are derived at the 95% confidence level and are valid for particles with lifetimes longer than 10-6s.
Published: 2003

37. Search for nearly mass-degenerate charginos and neutralinos at LEP

Author: Gordon H. Hanson, M. Ford, D. Zer-Zion, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, Oliver Pooth, A. Klier, John Allison, Balazs Ujvari, H. A. Neal, Daniele Bonacorsi, Gideon Bella, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, James Letts, Sachio Komamiya, Graham Wilson, Daniel Lellouch, D. Krop, M. A. Thomson, S. Campana, Raimund Ströhmer, Christoph Geich-Gimbel, S. Yamashita, D. E. Plane, Takehiko Mori, A. Okpara, P. J. Bell, K. Hoffman, A. Leins, N. K. Watson, J. Goldberg, D. Waller, K. Kruger, T. Saeki, H. J. Burckhart, P. Igo-Kemenes, H. Mes, I. P. Duerdoth, E. K. U. Gross, Shlomo Dado, C. F. Vollmer, K. Ishii, H. Jeremie, L. L. Kormos, P. Gagnon, S. Braibant, G. M. Dallavalle, Jochen Schieck, Vakhtang Kartvelishvili, P. Tran, J. von Krogh, A. Fürtjes, A. J. Martin, R. J. Barlow, Beatrix Dienes, A. Mutter, C. Ainsley, P. Scharff-Hansen, K. Stephens, O. Sahr, Lutz Feld, Zoltan Laszlo Trocsanyi, N. Kanaya, M. J. Oreglia, Dong Hee Kim, D. Toya, R. J. Hawkings, J. Hauschildt, P. Hüntemeyer, I. K. Klein, Gianni Masetti, O. Schaile, Christoph Rembser, C. Y. Chang, Richard Teuscher, M. Boutemeur, F. S. Merritt, D. Wetterling, D. J. Miller, Giora Mikenberg, A. M. Smith, J. Grunhaus, S. Moed, R. J. Batley, Paolo Giacomelli, Richard J. K. Taylor, P. F. Åkesson, W. Mader, S.J. Dallison, L. Zivkovic, H. Voss, Erez Etzion, G. Gaycken, S. Spagnolo, J. A. McKenna, M. Harin-Dirac, M. Schumacher, J. R. Carter, Stefan Kluth, Matthias Schröder, R. J. Homer, James Pinfold, R. Seuster, Shlomit Tarem, A. D. Schaile, Gabriella Pasztor, G. N. Patrick, D. R. Ward, R. J. Hemingway, M. Gruwé, W. Menges, Otmar Biebel, P. Vannerem, L. Brigliadori, J. Lillich, C. Hensel, G. Giacomelli, Satoshi Mihara, M. Przybycień, E. A. De Wolf, B. W. Kennedy, T. Kress, M. Giunta, E. Torrence, Achim Stahl, P. Mättig, P. Jovanovic, A. De Roeck, M. Kobel, A. A. Carter, T. Behnke, Shoji Asai, Gideon Alexander, B. Poli, S. W. O'Neale, P. Amaral, A. Gupta, Georges Azuelos, Peter Krieger, R. V. Kowalewski, Richard Nisius, Alexander Oh, Frank Fiedler, I. J. Bloodworth, P. O. Günther, E. Tsur, C. M. Hawkes, T. Schörner-Sadenius, C. P. Ward, Gunter Wolf, Isabel Marian Trigger, K. W. Bell, Andris Skuja, D. Lanske, Marco Cuffiani, M. Verzocchi, J. C. Hill, Tara Shears, Tetsuro Mashimo, S. Söldner-Rembold, Giovanni Abbiendi, D. Axen, K. J. Anderson, Tobias Kramer, W. J. McDonald, B. C. Shen, M. F. Turner-Watson, Frans Meijers, A. Macpherson, Yoram Rozen, Norbert Wermes, H. Landsman, T. Kawamoto, Oana Elena Vickey Boeriu, M. Donkers, Siegfried Bethke, C. H. Shepherd-Themistocleous, W. G. Scott, T. J. McMahon, F. Spano, I. Nakamura, M. Kupper, J. W. Gary, S. Orito, Peter Sherwood, J. Dubbert, R. K. Carnegie, P. Mendez-Lorenzo, Marek Tasevsky, Dezso Horvath, Thomas E Marchant, Guenter Duckeck, E. L. Barberio, J. A. Wilson, J. Ludwig, K. Harder, K. Runge, P. Bock, Dave Charlton, J. M. Roney, Thorsten Wengler, K. Sachs, B. Caron, Pamela Ferrari, J. G. Layter, G. Karapetian, Philip Bechtle, Junichi Kanzaki, J. Polok, D. Karlen, Ehud Duchovni, Koichi Nagai, W. Mohr, R. M. Brown, Lorne Levinson, K. Buesser, Gabriele Benelli, T. R. Junk, R. D. Heuer, A. Michelini, I. R. Bailey, P. S. Wells, T. Kobayashi, M. Hauschild, Terry Richard Wyatt, A. T. Watson, Klaus Rabbertz, Stephen Lloyd, J. P. Martin, Gregor Herten, Alain Bellerive, M. Hamann, J. E. Pilcher, Richard Keeler, G. Anagnostou, R. J. Sobie, Joost Vossebeld, Klaus Desch, R. Howard, A. Tricoli, Robert McPherson, S. Rosati, Arnulf Quadt, Fabrizio Fabbri, A. Frey, E. Elfgren, A. Harel, Ikuo Ueda, D. M. Strom, P. M. Watkins, J. Lu, H. Rick, G. P. Siroli, Christoph Schwick, P. Renkel, Silvia Arcelli, A. Csilling, C. Pahl, G. D. Lafferty, B. Vachon, Kiyotomo Kawagoe, T. Trefzger, Opal, Collaboration, G., Abbiendi, and Spagnolo, Stefania Antonia
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, FOS: Physical sciences, Superpartner, 01 natural sciences, Supersymmetry breaking, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Chargino, 0103 physical sciences, Neutralino, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment, Minimal Supersymmetric Standard Model, Bhabha scattering, Event generator
Abstract: A search was performed for charginos with masses close to the mass of the lightest neutralino in e+e- collisions at centre-of-mass energies of 189-209 GeV recorded by the OPAL detector at LEP. Events were selected if they had an observed high-energy photon from initial state radiation, reducing the dominant background from two-photon scattering to a negligible level. No significant excess over Standard Model expectations has been observed in the analysed data set corresponding to an integrated luminosity of 570pb-1. Upper limits were derived on the chargino pair-productin cross-section, and lower limits on the chargino mass were derived in the context of the Minimal Supersymmetric Extension of the Standard Model for the gravity and anomaly mediated Supersymmetry breaking scenarios., 26 pages, 9 figures
Published: 2003

38. Search for new physics in e±q contact interactions at HERA

Author: V. Jemanov, C. Niebuhr, Laurent Schoeffel, Murrough Landon, Paul Richard Newman, Grzegorz Nowak, N. Loktionova, J. Gassner, A. Hovhannisyan, J.G. Contreras, I. Tsurin, M. C. Cousinou, J.E. Turney, P. Baranov, Peter Schleper, S. Egli, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, R. Koutouev, A. Petrukhin, S. Mangano, D. Lüke, C. Wissing, J. Zalesak, Y. Soloviev, E. Wünsch, P. Höting, L. Janauschek, I. Potachnikova, J. Martyniak, S. Lüders, G. Buschhorn, D. Ozerov, V. Lubimov, Dusan Bruncko, B. Naroska, K. H. Hiller, T. Kluge, T. Greenshaw, Rainer Wallny, A. Astvatsatourov, Paul Laycock, E. Malinovski, F. P. Schilling, Doris Eckstein, P. Van Mechelen, R. C. W. Henderson, E. Eisenhandler, R. Pöschl, J. Cvach, G. Grindhammer, G. D. Patel, D.P. Johnson, J. Ferencei, J. Naumann, J. Marks, J. Formánek, J. Dingfelder, N. Werner, D. Clarke, B. Waugh, Claus Kleinwort, S. Baumgartner, N. Malden, Wolfram Erdmann, B. List, M. zur Nedden, Pierre Marage, John A Coughlan, I. Sheviakov, J. Rauschenberger, G. Weber, U. Straumann, D. Kant, David Schmidt, K. Sedlák, O. Karschnick, K. Gabathuler, K. Rybicki, D. Wegener, W.J. Haynes, S. Schmidt, J. V. Morris, C. Risler, K. Daum, S. Mohrdieck, D. P. C. Sankey, A. Specka, Caroline Collard, Christoph Grab, J. Kennedy, V. Brisson, S. Vassiliev, J. Wagner, A. D.R. Vargas Trevino, C. Adloff, F. Keil, H. Meyer, R. Demirchyan, M.N. Mondragon, A. Bunyatyan, Leif J. Jönsson, V. Efremenko, B. Koblitz, Markus Wobisch, Xavier Janssen, J. Böhme, Stephen Maxfield, L. N. Shtarkov, F. Tomasz, V. Spaskov, R. Maraček, R. Marshall, Ewelina Lobodzinska, A. Beglarian, Pavel Murin, H. Grässler, K. Wacker, J. Stiewe, O. Behnke, S. Mikocki, A. Uraev, G. Knies, J-P. Meyer, Martin Erdmann, J. Žáček, M. Ibbotson, A. Knutsson, T. Schörner-Sadenius, T. Laštovička, R. Felst, Matthew Jones, B. Stella, F. Niebergall, Stefan Schmitt, Andrew Mehta, E. Barrelet, P. Dixon, Hans-Christian Schultz-Coulon, Glenn J. White, M. Hildebrandt, A. Vichnevski, A. Lebedev, F. Sefkow, V. Chekelian, V. Korbel, P. Kjellberg, F. Moreau, J. Hladký, J. D. Dowell, B. Lobodzinski, A. Vest, A. Rostovtsev, N. Gogitidze, V. Nagovizin, A. Droutskoi, D. Haidt, E. Perez, S. Caron, V. Panassik, E. A. De Wolf, Ch. Berger, Karlheinz Meier, R. Roosen, S. Hengstmann, Judith Katzy, S. Hurling, Eram Rizvi, G. Heinzelmann, R. Eichler, R. Gerhards, M. Winde, S. D. Kolya, V. Dodonov, L. Lytkin, E.-E. Woehrling, C. Werner, Laurent Favart, T. Anthonis, Cristinel Diaconu, Ç. İşsever, T. Wilksen, P. E. Reimer, C. Johnson, F. Zomer, C. Duprel, I. Herynek, Daniel Pitzl, V. Andreev, L. Bystritskaya, R. Lemrani, P. Kostka, J. Turnau, T. Kuhr, B. Reisert, J. Bähr, S. Levonian, I. R. Kenyon, G. G. Winter, D. Traynor, H. U. Martyn, O. Nix, F. Cassol-Brunner, S. K. Kotelnikov, L. Hajduk, D. South, M. Wessels, M. Urban, H. Spitzer, D.P. Brown, J. Haller, Yves Sirois, M. Ellerbrock, G. Thompson, B. Andrieu, S. Ghazaryan, M. Davidsson, Bradley Cox, G. Franke, Katja Krüger, L. Goerlich, S. Michine, Roland Horisberger, A. Valkárová, H. Henschel, J.C. Bizot, N. Delerue, K. Müller, Christian Schwanenberger, Anton Babaev, I. Foresti, G. Cozzika, F. Eisele, J.P. Phillips, Stefan Valkar, H.-B. Bröker, Martin Karlsson, Hannes Jung, D. Lamb, Alexander Zhokin, J. Becker, C. Vallée, R. Heremans, M. Kapichine, M. Nozicka, A. Koutov, B. Delcourt, S. Schätzel, N. Keller, V. Lendermann, V. Schröder, Eckhard Elsen, Wolfgang Lange, J. Gayler, R. Stamen, Peter Robmann, J. Scheins, W.D. Dau, J. B. Dainton, B. Leißner, A. Loginov, M. Jacquet, Zhen Zhang, T. Hadig, G. Herrera, V. Grabski, D. Hoffmann, Andreas Meyer, D. Meer, A. Usik, G. Frising, Y. R. Coppens, Max Klein, I. Strauch, Philipp Fleischmann, Beate Heinemann, David Milstead, C. Pascaud, P. A. Smirnov, Guenter Eckerlin, S. Ferron, S. Wiesand, Th. Naumann, M. Jaffre, J. E. Olsson, W. Bartel, M. Hilgers, J. Garvey, F. W. Büsser, W. Braunschweig, A. M. Fomenko, E. Lebailly, C. Gerlich, T. Berndt, A. Burrage, E. Gabathuler, J. Kroseberg, Vincent Boudry, Y. H. Fleming, A. N. Morozov, Georgios Tsipolitis, M. Fleischer, A. Schöning, Bogdan Povh, A. Dubak, Y. Vazdik, P.D. Thompson, S. Tchetchelnitski, M. Schneider, M. Peez, M. Beckingham, A. Fedotov, Günter Flügge, C. Kiesling, A.C. Wyatt, A. De Roeck, E. Tzamariudaki, A. J. Campbell, and H1 Collaboration
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, Neutral current, Physics beyond the Standard Model, High Energy Physics::Phenomenology, Momentum transfer, FOS: Physical sciences, HERA, Supersymmetry, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Large extra dimension, High Energy Physics::Experiment
Abstract: Deep-inelastic e^\pm p scattering at high squared momentum transfer Q^2 up to 30000 GeV^2 is used to search for eq contact interactions associated to scales far beyond the HERA centre of mass energy. The neutral current cross section measurements d sigma / d Q^2, corresponding to integrated luminosities of 16.4 pb^-1 of e^- p data and 100.8 pb^-1 of e^+ p data, are well described by the Standard Model and are analysed to set constraints on new phenomena. For conventional contact interactions lower limits are set on compositeness scales Lambda ranging between 1.6 - 5.5 TeV. Couplings and masses of leptoquarks and squarks in R-parity violating supersymmetry are constrained to M / lambda > 0.3 - 1.4 TeV. A search for low scale quantum gravity effects in models with large extra dimensions provides limits on the effective Planck scale of M_S > 0.8 TeV. A form factor analysis yields a bound on the radius of light quarks of R_q < 1.0 x 10^-18 m., 15 pages, 5 figures and 5 tables
Published: 2003

39. A measurement of the τ−→μ−ν̄μντ branching ratio

Author: G Abbiendi, C Ainsley, P.F Åkesson, G Alexander, J Allison, P Amaral, G Anagnostou, K.J Anderson, S Arcelli, S Asai, D Axen, G Azuelos, I Bailey, E Barberio, R.J Barlow, R.J Batley, P Bechtle, T Behnke, K.W Bell, P.J Bell, G Bella, A Bellerive, G Benelli, S Bethke, O Biebel, I.J Bloodworth, O Boeriu, P Bock, D Bonacorsi, M Boutemeur, S Braibant, L Brigliadori, R.M Brown, K Buesser, H.J Burckhart, S Campana, R.K Carnegie, B Caron, A.A Carter, J.R Carter, C.Y Chang, D.G Charlton, A Csilling, M Cuffiani, S Dado, S Dallison, A De Roeck, E.A De Wolf, K Desch, B Dienes, M Donkers, J Dubbert, E Duchovni, G Duckeck, I.P Duerdoth, E Elfgren, E Etzion, F Fabbri, L Feld, P Ferrari, F Fiedler, I Fleck, M Ford, A Frey, A Fürtjes, P Gagnon, J.W Gary, G Gaycken, C Geich-Gimbel, G Giacomelli, P Giacomelli, M Giunta, J Goldberg, E Gross, J Grunhaus, M Gruwé, P.O Günther, A Gupta, C Hajdu, M Hamann, G.G Hanson, K Harder, A Harel, M Harin-Dirac, M Hauschild, J Hauschildt, C.M Hawkes, R Hawkings, R.J Hemingway, C Hensel, G Herten, R.D Heuer, J.C Hill, K Hoffman, R.J Homer, D Horváth, R Howard, P Igo-Kemenes, K Ishii, H Jeremie, P Jovanovic, T.R Junk, N Kanaya, J Kanzaki, G Karapetian, D Karlen, V Kartvelishvili, K Kawagoe, T Kawamoto, R.K Keeler, R.G Kellogg, B.W Kennedy, D.H Kim, K Klein, A Klier, S Kluth, T Kobayashi, M Kobel, S Komamiya, L Kormos, T Krämer, T Kress, P Krieger, J von Krogh, D Krop, K Kruger, T Kuhl, M Kupper, G.D Lafferty, H Landsman, D Lanske, J.G Layter, A Leins, D Lellouch, L Levinson, J Lillich, S.L Lloyd, F.K Loebinger, J Lu, J Ludwig, A Macpherson, W Mader, S Marcellini, T.E Marchant, A.J Martin, J.P Martin, G Masetti, T Mashimo, W.J McDonald, J McKenna, T.J McMahon, R.A McPherson, F Meijers, P Mendez-Lorenzo, W Menges, F.S Merritt, H Mes, A Michelini, S Mihara, G Mikenberg, D.J Miller, S Moed, W Mohr, T Mori, A Mutter, K Nagai, I Nakamura, H.A Neal, R Nisius, S.W O'Neale, A Oh, A Okpara, M.J Oreglia, S Orito, C Pahl, G Pásztor, J.R Pater, G.N Patrick, J.E Pilcher, J Pinfold, D.E Plane, B Poli, J Polok, O Pooth, M Przybycień, A Quadt, K Rabbertz, C Rembser, P Renkel, H Rick, J.M Roney, S Rosati, Y Rozen, K Runge, K Sachs, T Saeki, O Sahr, E.K.G Sarkisyan, A.D Schaile, O Schaile, P Scharff-Hansen, J Schieck, T Schörner-Sadenius, M Schröder, M Schumacher, C Schwick, W.G Scott, R Seuster, T.G Shears, B.C Shen, P Sherwood, G Siroli, A Skuja, A.M Smith, R Sobie, S Söldner-Rembold, F Spano, A Stahl, K Stephens, D Strom, R Ströhmer, S Tarem, M Tasevsky, R.J Taylor, R Teuscher, M.A Thomson, E Torrence, D Toya, P Tran, T Trefzger, A Tricoli, I Trigger, Z Trócsányi, E Tsur, M.F Turner-Watson, I Ueda, B Ujvári, B Vachon, C.F Vollmer, P Vannerem, M Verzocchi, H Voss, J Vossebeld, D Waller, C.P Ward, D.R Ward, P.M Watkins, A.T Watson, N.K Watson, P.S Wells, T Wengler, N Wermes, D Wetterling, G.W Wilson, J.A Wilson, G Wolf, T.R Wyatt, S Yamashita, D Zer-Zion, L Zivkovic, J Letts, P Mättig, and OPAL Collaboration
Subjects: Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, 01 natural sciences, Nuclear physics, 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, 010306 general physics, Lepton, Minimal Supersymmetric Standard Model
Abstract: The tau -> mu nu nu branching ratio has been measured using data collected from 1990 to 1995 by the OPAL detector at the LEP collider. The resulting value of B(tau -> mu nu nu) = 0.1734 +- 0.0009(stat) +- 0.0006(syst) has been used in conjunction with other OPAL measurements to test lepton universality, yielding the coupling constant ratios gmu/ge=1.0005+-0.0044 and gt/ge=1.0031+-0.0048, in good agreement with the Standard Model prediction of unity. A value for the Michel parameter eta = 0.004 +- 0.037 has also been determined and used to find a limit for the mass of the charged Higgs boson mH+- > 1.25 tan beta, in the Minimal Supersymmetric Standard Model.
Published: 2003

40. Measurement of D^{+} and Lambda_{c}^{+} production in deep inelastic scattering at HERA

Author: H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWAL, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A. N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, D. BARTSCH, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, T. BOLD, E. G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, S. K. BOUTLE, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P. J. BUSSEY, J. M. BUTTERWORTH, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C. D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, F. CINDOLO, A. M. COOPER SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DE FAVEREAU, J. DEL PESO, R. K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R. C. E. DEVENISH, D. DOBUR, B. A. DOLGOSHEIN, A. T. DOYLE, V. DRUGAKOV, L. S. DURKIN, S. DUSINI, Y. EISENBERG, P. F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M. I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L. K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, Y.U. A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J. C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, U. HOLM, R. HORI, K. HORTON, A. HÜTTMANN, G. IACOBUCCI, Z. A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H. P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T. W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I. I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L. A. KHEIN, J. Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, D. KOLLAR, P. KOOIJMAN, I.E. KOROL, I. A. KORZHAVINA, A. KOTA´NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, V. A. KUZMIN, A. LEE, B. B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T. Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, J. H. LOIZIDES, K. R. LONG, A. LONGHIN, D. LONTKOVSKYI, O. Y.U. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J. F. MARTIN, A. MASTROBERARDINO, T. MATSUMOTO, M. C. K. MATTINGLY, I. A. MELZER PELLMANN, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J. D. MORRIS, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, U. NOOR, D. NOTZ, R. J. NOWAK, A. E. NUNCIO QUIROZ, B. Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, Y.U. ONISHCHUK, O. OTA, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J. M. PAWLAK, B. PAWLIK, P. G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N. S. POKROVSKIY, A. POLINI, A. S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D. D. REEDER, B. REISERT, Z. REN, J. REPOND, Y. D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, A. A. SAVIN, D. H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W. B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER SADENIUS, J. SCHWARTZ, F. SCIULLI, L. M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I. O. SKILLICORN, W. SLOMI´NSKI, W. H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T. P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK, D. SZUBA, J. SZUBA, A. D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, V. VIAZLO, N. N. VLASOV, O. VOLYNETS, R. WALCZAK, W. A. T. WAN ABDULLAH, J. J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, A. G. YAGÜES MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A. F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B. O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D. S. ZOTKIN, Z. ZULKAPLI, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, SARTORELLI, GABRIELLA, Zeus (IHEF, IoP, FNWI), Precision Frontier, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWAL, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, D. BARTSCH, M. BASILE, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, T. BOLD, E.G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, S.K. BOUTLE, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P.J. BUSSEY, J.M. BUTTERWORTH, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C.D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DE FAVEREAU, J. DEL PESO, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, D. DOBUR, B.A. DOLGOSHEIN, A.T. DOYLE, V. DRUGAKOV, L.S. DURKIN, S. DUSINI, Y. EISENBERG, P.F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M.I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, YU.A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA-BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, U. HOLM, R. HORI, K. HORTON, A. HÜTTMANN, G. IACOBUCCI, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H.-P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I.I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L.A. KHEIN, J.Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, D. KOLLAR, P. KOOIJMAN, IE.KOROL, I.A. KORZHAVINA, A. KOTA´NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, V.A. KUZMIN, A. LEE, B.B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T.Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, J.H. LOIZIDES, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, O.YU. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J.F. MARTIN, A. MASTROBERARDINO, T. MATSUMOTO, M.C.K. MATTINGLY, I.-A. MELZER-PELLMANN, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J.D. MORRIS, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, U. NOOR, D. NOTZ, R.J. NOWAK, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, YU. ONISHCHUK, O. OTA, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J.M. PAWLAK, B. PAWLIK, P.G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N.S. POKROVSKIY, A. POLINI, A.S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D.D. REEDER, B. REISERT, Z. REN, J. REPOND, Y.D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, G. SARTORELLI, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER-SADENIUS, J. SCHWARTZ, F. SCIULLI, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I.O. SKILLICORN, W. SLOMI´NSKI, W.H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T.P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE-ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, V. VIAZLO, N.N. VLASOV, O. VOLYNETS, R.WALCZAK, W.A.T. WAN ABDULLAH, J.J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H.WOLFE, K.WRONA, A.G. YAGÜES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B.O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D.S. ZOTKIN, and Z. ZULKAPLI
Subjects: Quark, Particle physics, Nuclear and High Energy Physics, Meson, D-ASTERISK, Hadron, HERA, Lepton-Nucleon Scattering, FOS: Physical sciences, CHARM FRAGMENTATION, Lambda, 01 natural sciences, CROSS-SECTIONS, O(ALPHA-S) CORRECTIONS, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, 0103 physical sciences, BEAUTY PRODUCTION, ddc:530, 010306 general physics, Nuclear Experiment, Quantum chromodynamics, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, ELECTROPRODUCTION, ZEUS BARREL CALORIMETER, Deep inelastic scattering, CENTRAL TRACKING DETECTOR, Baryon, PHOTOPRODUCTION, PERTURBATION-THEORY, High Energy Physics::Experiment
Abstract: Charm production in deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 120 pb^{-1}. The hadronic decay channels D^{+} -> K^{0}_{S} pi^{+}, Lambda_{c}^{+} -> p K^{0}_{S} and Lambda_{c}^{+} -> Lambda pi^{+}, and their charge conjugates, were reconstructed. The presence of a neutral strange hadron in the final state reduces the combinatorial background and extends the measured sensitivity into the low transverse momentum region. The kinematic range is 0 < p_{T}(D^{+}, Lambda_{c}^{+}) < 10 GeV, |eta(D^{+}, Lambda_{c}^{+})| < 1.6, 1.5 < Q^{2} < 1000 GeV^{2} and 0.02 < y < 0.7. Inclusive and differential cross sections for the production of D^{+} mesons are compared to next-to-leading-order QCD predictions. The fraction of c quarks hadronising into Lambda_{c}^{+} baryons is extracted., Minor changes to the text in response to the JHEP referee
Published: 2010

41. Measurement of beauty production in DIS and F_2(b-bbar) extraction at ZEUS

Author: H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWAL, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A. N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, D. BARTSCH, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, T. BOLD, E. G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, S. K. BOUTLE, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P. J. BUSSEY, J. M. BUTTERWORTH, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C. D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, F. CINDOLO, A. M. COOPER SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DE FAVEREAU, J. DEL PESO, R. K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R. C. E. DEVENISH, D. DOBUR, B. A. DOLGOSHEIN, A. T. DOYLE, V. DRUGAKOV, L. S. DURKIN, S. DUSINI, Y. EISENBERG, P. F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M. I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L. K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, Y.U. A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J. C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, U. HOLM, R. HORI, K. HORTON, A. HÜTTMANN, G. IACOBUCCI, Z. A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H. P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T. W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I. I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L. A. KHEIN, J. Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, D. KOLLAR, P. KOOIJMAN, I.E. KOROL, I. A. KORZHAVINA, A. KOTA´NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, V. A. KUZMIN, A. LEE, B. B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T. Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, J. H. LOIZIDES, K. R. LONG, A. LONGHIN, D. LONTKOVSKYI, O. Y.U. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J. F. MARTIN, A. MASTROBERARDINO, T. MATSUMOTO, M. C. K. MATTINGLY, I. A. MELZER PELLMANN, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J. D. MORRIS, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, U. NOOR, D. NOTZ, R. J. NOWAK, A. E. NUNCIO QUIROZ, B. Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, Y.U. ONISHCHUK, O. OTA, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J. M. PAWLAK, B. PAWLIK, P. G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N. S. POKROVSKIY, A. POLINI, A. S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D. D. REEDER, B. REISERT, Z. REN, J. REPOND, Y. D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, A. A. SAVIN, D. H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W. B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER SADENIUS, J. SCHWARTZ, F. SCIULLI, L. M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I. O. SKILLICORN, W. SLOMI´NSKI, W. H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T. P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK, D. SZUBA, J. SZUBA, A. D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, V. VIAZLO, N. N. VLASOV, O. VOLYNETS, R. WALCZAK, W. A. T. WAN ABDULLAH, J. J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, A. G. YAGÜES MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A. F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B. O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D. S. ZOTKIN, Z. ZULKAPLI, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, SARTORELLI, GABRIELLA, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, R. AGGARWAL, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, M. ARNEODO, V. AUSHEV, Y. AUSHEV, O. BACHYNSKA, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, D. BARTSCH, M. BASILE, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BERTOLIN, S. BHADRA, M. BINDI, C. BLOHM, T. BOLD, E.G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, S.K. BOUTLE, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRÜMMER, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, P.J. BUSSEY, J.M. BUTTERWORTH, B. BYLSMA, A. CALDWELL, M. CAPUA, R. CARLIN, C.D. CATTERALL, S. CHEKANOV, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, G. D’AGOSTINI, F. DAL CORSO, J. DE FAVEREAU, J. DEL PESO, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, D. DOBUR, B.A. DOLGOSHEIN, A.T. DOYLE, V. DRUGAKOV, L.S. DURKIN, S. DUSINI, Y. EISENBERG, P.F. ERMOLOV, A. ESKREYS, S. FANG, S. FAZIO, J. FERRANDO, M.I. FERRERO, J. FIGIEL, M. FORREST, B. FOSTER, S. FOURLETOV, G. GACH, A. GALAS, E. GALLO, A. GARFAGNINI, A. GEISER, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, O. GOGOTA, YU.A. GOLUBKOV, P. GÖTTLICHER, I. GRABOWSKA-BOLD, J. GREBENYUK, I. GREGOR, G. GRIGORESCU, G. GRZELAK, C. GWENLAN, T. HAAS, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, E. HILGER, D. HOCHMAN, U. HOLM, R. HORI, K. HORTON, A. HÜTTMANN, G. IACOBUCCI, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, H.-P. JAKOB, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, M. JÜNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, U. KARSHON, F. KARSTENS, I.I. KATKOV, M. KAUR, P. KAUR, A. KERAMIDAS, L.A. KHEIN, J.Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, U. KLEIN, E. KOFFEMAN, D. KOLLAR, P. KOOIJMAN, IE.KOROL, I.A. KORZHAVINA, A. KOTA´NSKI, U. KÖTZ, H. KOWALSKI, P. KULINSKI, O. KUPRASH, M. KUZE, V.A. KUZMIN, A. LEE, B.B. LEVCHENKO, A. LEVY, V. LIBOV, S. LIMENTANI, T.Y. LING, M. LISOVYI, E. LOBODZINSKA, W. LOHMANN, B. LÖHR, E. LOHRMANN, J.H. LOIZIDES, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, O.YU. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, I. MAKARENKO, J. MALKA, R. MANKEL, A. MARGOTTI, G. MARINI, J.F. MARTIN, A. MASTROBERARDINO, T. MATSUMOTO, M.C.K. MATTINGLY, I.-A. MELZER-PELLMANN, S. MIGLIORANZI, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, J.D. MORRIS, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, D. NICHOLASS, A. NIGRO, Y. NING, U. NOOR, D. NOTZ, R.J. NOWAK, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, K. OLKIEWICZ, YU. ONISHCHUK, O. OTA, K. PAPAGEORGIU, A. PARENTI, E. PAUL, J.M. PAWLAK, B. PAWLIK, P.G. PELFER, A. PELLEGRINO, W. PERLANSKI, H. PERREY, K. PIOTRZKOWSKI, P. PLUCINSKI, N.S. POKROVSKIY, A. POLINI, A.S. PROSKURYAKOV, M. PRZYBYCIE´N, A. RAVAL, D.D. REEDER, B. REISERT, Z. REN, J. REPOND, Y.D. RI, A. ROBERTSON, P. ROLOFF, E. RON, I. RUBINSKY, M. RUSPA, R. SACCHI, A. SALII, U. SAMSON, G. SARTORELLI, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, U. SCHNEEKLOTH, V. SCHÖNBERG, T. SCHÖRNER-SADENIUS, J. SCHWARTZ, F. SCIULLI, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, I. SINGH, I.O. SKILLICORN, W. SLOMI´NSKI, W.H. SMITH, V. SOLA, A. SOLANO, D. SON, V. SOSNOVTSEV, A. SPIRIDONOV, H. STADIE, L. STANCO, A. STERN, T.P. STEWART, A. STIFUTKIN, P. STOPA, S. SUCHKOV, G. SUSINNO, L. SUSZYCKI, J. SZTUK, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, J. TERRÓN, T. THEEDT, H. TIECKE, K. TOKUSHUKU, O. TOMALAK, J. TOMASZEWSKA, T. TSURUGAI, M. TURCATO, T. TYMIENIECKA, C. URIBE-ESTRADA, M. VÁZQUEZ, A. VERBYTSKYI, V. VIAZLO, N.N. VLASOV, O. VOLYNETS, R.WALCZAK, W.A.T. WAN ABDULLAH, J.J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, M. WLASENKO, G. WOLF, H.WOLFE, K.WRONA, A.G. YAGÜES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, B.O. ZHAUTYKOV, N. ZHMAK, C. ZHOU, A. ZICHICHI, M. ZOLKO, D.S. ZOTKIN, and Z. ZULKAPLI
Subjects: High Energy Physics::Experiment
Published: 2010

42. Sigma-antihyperon correlations in Z0 decay and investigation of the baryon production mechanism

Author: G. W. Wilson, M. Schumacher, M. Hauschild, Teresa Barillari, W. Menges, Otmar Biebel, E. A. De Wolf, Oliver Pooth, J. Grunhaus, L. Zivkovic, B. Dienes, J. A. McKenna, P. Mättig, Shoji Asai, Norbert Wermes, T. Kawamoto, S. Orito, M. Dallavalle, H. Landsman, E. L. Barberio, R. G. Kellogg, Attila Krasznahorkay, H. Mes, I. P. Duerdoth, J. Lillich, J. M. Roney, B. W. Kennedy, P. Jovanovic, Peter Krieger, A. J. Martin, A. Harel, Thorsten Wengler, Dave Charlton, Csaba Hajdu, Stefano Marcellini, James Letts, N. K. Watson, Daniel Lellouch, Guenter Duckeck, Ikuo Ueda, D. M. Strom, D. J. Miller, J. Lu, D. Axen, Christoph Geich-Gimbel, Oana Elena Vickey Boeriu, Koichi Nagai, K. Ishii, H. Jeremie, Takehiko Mori, G. Mikenberg, W. Mader, Sachio Komamiya, M. Gruwe, F. Spano, W. Mohr, Peter Sherwood, Tara Shears, R. J. Batley, Gabriele Benelli, Robert McPherson, P. Scharff-Hansen, R. D. Heuer, C. Ainsley, M. J. Oreglia, S. Braibant, Gordon H. Hanson, E. Tsur, C. M. Hawkes, O. Schaile, C. F. Vollmer, Richard Teuscher, J. Ludwig, K. Runge, P. Bock, T. Saeki, T. Kuhl, A. M. Rossi, M. A. Thomson, Rolf Seuster, Isabel Marian Trigger, K. W. Bell, Yoram Rozen, E. K. U. Gross, H. Voss, D. Zer-Zion, A. M. Smith, Kiyotomo Kawagoe, Gregor Herten, Gideon Bella, H. J. Burckhart, J. C. Hill, Jochen Schieck, R. J. Barlow, J. Goldberg, Junichi Kanzaki, F. K. Loebinger, Fabrizio Fabbri, A. Frey, Satoru Yamashita, Matthias Schröder, Tobias Kramer, B. C. Shen, Ivor Fleck, Andris Skuja, Joleen Pater, Balazs Ujvari, J. E. Pilcher, Edward K. G. Sarkisyan, D. Toya, M. Boutemeur, F. S. Merritt, Siegfried Bethke, Tetsuro Mashimo, M. F. Turner-Watson, H. A. Neal, A. Mutter, T. Schörner-Sadenius, I. Nakamura, N. Meyer, S. Campana, J. W. Gary, M. Kupper, T. Behnke, T. R. Junk, James Pinfold, A. Quadt, P. S. Wells, Alexander Oh, Terry Richard Wyatt, A. T. Watson, Marco Cuffiani, Claudia Ciocca, P. Gagnon, M. Hamann, K. Sachs, J. R. Carter, D. Lanske, Philip Bechtle, Marek Tasevsky, Christoph Rembser, C. Pahl, R. J. Sobie, G. D. Lafferty, Joost Vossebeld, Klaus Desch, Erez Etzion, R. K. Keeler, Zoltan Laszlo Trocsanyi, P. J. Bell, Stefan Kluth, P. M. Watkins, Shlomit Tarem, P. Renkel, M. Giunta, Dezso Horvath, Gunter Wolf, D. Karlen, Gideon Alexander, Paolo Capiluppi, H. Nanjo, P. Igo-Kemenes, M. Przybycień, Ehud Duchovni, A. Michelini, A. A. Carter, T. Kobayashi, A. Ludwig, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, Klaus Rabbertz, Stephen Lloyd, J. Dubbert, Robert Vertesi, R. K. Carnegie, J. A. Wilson, M. Ford, J. von Krogh, R. J. Hawkings, D. Wetterling, E. Torrence, A. Gupta, Alain Bellerive, A. Csilling, G. Anagnostou, Pamela Ferrari, D. E. Plane, Shlomo Dado, G. Giacomelli, A. De Roeck, M. Kobel, Frans Meijers, R. M. Brown, Lorne Levinson, A. D. Schaile, Paolo Giacomelli, Gabriella Pasztor, P. Vannerem, I. R. Bailey, C. P. Ward, S. Söldner-Rembold, Achim Stahl, C. Y. Chang, Raimund Ströhmer, S. W. O'Neale, K. J. Anderson, D. R. Ward, Satoshi Mihara, Frank Fiedler, OPAL Collaboration, G. ABBIENDI, C. AINSLEY, P. F. ÅKESSON, G. ALEXANDER, G. ANAGNOSTOU, K. J. ANDERSON, S. ASAI, D. AXEN, I. BAILEY, E. BARBERIO, T. BARILLARI, R. J. BARLOW, R. J. BATLEY, P. BECHTLE, T. BEHNKE, K. W. BELL, P. J. BELL, G. BELLA, A. BELLERIVE, G. BENELLI, S. BETHKE, O. BIEBEL, O. BOERIU, P. BOCK, M. BOUTEMEUR, S. BRAIBANT, R. M. BROWN, H. J. BURCKHAR, S. CAMPANA, P. CAPILUPPI, R. K. CARNEGIE, A. A. CARTER, J. R. CARTER, C. Y. CHANG, D. G. CHARLTON, C. CIOCCA, A. CSILLING, M. CUFFIANI, S. DADO, M. DALLAVALLE, A. DE ROECK, E. A. DE WOLF, K. DESCH, B. DIENES, J. DUBBERT, E. DUCHOVNI, G. DUCKECK, I. P. DUERDOTH, E. ETZION, F. FABBRI, P. FERRARI, F. FIEDLER, I. FLECK, M. FORD, A. FREY, P. GAGNON, J. W. GARY, C. GEICH-GIMBEL, G. GIACOMELLI, P. GIACOMELLI, M. GIUNTA, J. GOLDBERG, E. GROSS, J. GRUNHAUS, M. GRUWÉ, A. GUPT, C. HAJDU, M. HAMANN, G. G. HANSON, A. HAREL, M. HAUSCHILD, C. M. HAWKES, R. HAWKINGS, G. HERTEN, R. D. HEUER, J. C. HILL, D. HORVÁTH, P. IGO-KEMENES, K. ISHII, H. JEREMIE, P. JOVANOVIC, T. R. JUNK, J. KANZAKI, D. KARLEN, K. KAWAGOE, T. KAWAMOTO, R. K. KEELER, R. G. KELLOGG, B. W. KENNEDY, S. KLUTH, T. KOBAYASHI, M. KOBEL, S. KOMAMIYA, T. KRÄMER, A. KRASZNAHORKAY JR., P. KRIEGER, J. VON KROGH, T. KUHL, M. KUPPER, G. D. LAFFERTY, H. LANDSMAN, D. LANSKE, D. LELLOUCH, J. LETTS, L. LEVINSON, J. LILLICH, S. L. LLOYD, F. K. LOEBINGER, J. LU, A. LUDWIG, J. LUDWIG, W. MADER, S. MARCELLINI, A. J. MARTIN, T. MASHIMO, P. MÄTTIG, J. MCKENNA, R. A. MCPHERSON, F. MEIJERS, W. MENGES, F. S. MERRITT, H. MES, N. MEYER, A. MICHELINI, S. MIHARA, G. MIKENBERG, D. J. MILLER, W. MOHR, T. MORI, A. MUTTER, K. NAGAI, I. NAKAMURA, H. NANJO, H. A. NEAL, S. W. O’NEALE, A. OH, M. J. OREGLIA, S. ORITO, C. PAHL, G. PÁSZTOR, J. R. PATER, J. E. PILCHER, J. PINFOLD, D. E. PLANE, O. POOTH, M. PRZYBYCIEń, A. QUADT, K. RABBERTZ, C. REMBSER, P. RENKEL, J. M. RONEY, A. M. ROSSI, Y. ROZEN, K. RUNGE, K. SACHS, T. SAEKI, E. K. G. SARKISYAN, A. D. SCHAILE, O. SCHAILE, P. SCHARFF-HANSEN, J. SCHIECK, T. SCHÖRNER-SADENIUS, M. SCHRÖDER, M. SCHUMACHER, R. SEUSTER, T. G. SHEARS, B. C. SHEN, P. SHERWOOD, A. SKUJA, A. M. SMITH, R. SOBIE, S. SÖLDNER-REMBOLD, F. SPANO, A. STAHL, D. STROM, R. STRÖHMER, S. TAREM, M. TASEVSKY, R. TEUSCHER, M. A. THOMSON, E. TORRENCE, D. TOYA, I. TRIGGER, Z. TRÓCSÁNYI, E. TSUR, M. F. TURNER-WATSON, I. UEDA, B. UJVÁRI, C. F. VOLLMER, P. VANNEREM, R. VÉRTESI, M. VERZOCCHI, H. VOSS, J. VOSSEBELD, C. P. WARD, D. R. WARD, P. M. WATKINS, A. T. WATSON, N. K. WATSON, P. S. WELLS, T. WENGLER, N. WERMES, D. WETTERLING, G. W. WILSON, J. A. WILSON, G. WOLF, T. R. WYATT, S. YAMASHITA, D. ZER-ZION, and L. ZIVKOVIC
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Nuclear Theory, FOS: Physical sciences, Fizikai tudományok, Context (language use), Lambda, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Természettudományok, 0103 physical sciences, ddc:530, Rapidity, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hyperon, 3. Good health, Hadronization, Baryon, Diquark, High Energy Physics::Experiment, Baryon number, Particle Physics - Experiment
Abstract: Data collected around sqrt{s}=91 GeV by the OPAL experiment at the LEP e+e- collider are used to study the mechanism of baryon formation. As the signature, the fraction of Sigma-hyperons whose baryon number is compensated by the production of a Sigma-, Lambda or Xi- antihyperon is determined. The method relies entirely on quantum number correlations of the baryons, and not rapidity correlations, making it more model independent than previous studies. The diquark fragmentation model without the popcorn mechanism is strongly disfavored with a significance of 3.8 standard deviations including systematic uncertainties. It is shown that previous studies of the popcorn mechanism are not conclusive if parameter uncertainties are considered., Comment: No of pages 31 - No of figures 7
Published: 2009
Full Text: View/download PDF

43. Exclusive photoproduction of upsilon mesons at HERA

Author: S. CHEKANOV, M. DERRICK, S. MAGILL, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA, M. C. K. MATTINGLY, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, F. CINDOLO, M. CORRADI, G. IACOBUCCI, A. MARGOTTI, R. NANIA, A. POLINI, S. ANTONELLI, M. BINDI, S. DE PASQUALE, A. ZICHICHI, D. BARTSCH, I. BROCK, H. HARTMANN, E. HILGER, H. P. JAKOB, M. JÜNGST, A. E. NUNCIO QUIROZ, E. PAUL, U. SAMSON, V. SCHÖNBERG, R. SHEHZADI, M. WLASENKO, N. H. BROOK, G. P. HEATH, J. D. MORRIS, M. KAUR, P. KAUR, I. SINGH, M. CAPUA, S. FAZIO, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J. Y. KIM, Z. A. IBRAHIM, B. KAMALUDDIN, W. A. T. WAN ABDULLAH, Y. NING, Z. REN, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA BOLD, D. KISIELEWSKA, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, A. KOTANSKI, W. SLOMINSKI, O. BEHNKE, U. BEHRENS, I. BLOCH, C. BLOHM, A. BONATO, K. BORRAS, D. BOT, R. CIESIELSKI, N. COPPOLA, S. FANG, J. FOURLETOVA, A. GEISER, P. GÖTTLICHER, J. GREBENYUK, I. GREGOR, O. GUTSCHE, T. HAAS, W. HAIN, A. HÜTTMANN, J. JANUSCHEK, B. KAHLE, I. I. KATKOV, U. KLEIN, U. KÖTZ, H. KOWALSKI, M. LISOVYI, E. LOBODZINSKA, B. LÖHR, R. MANKEL, I. A. MELZER PELLMANN, S. MIGLIORANZI, A. MONTANARI, T. NAMSOO, D. NOTZ, A. PARENTI, P. ROLOFF, I. RUBINSKY, U. SCHNEEKLOTH, A. SPIRIDONOV, D. SZUBA, J. SZUBA, T. THEEDT, J. UKLEJA, G. WOLF, K. WRONA, A. G. YAGUES MOLINA, C. YOUNGMAN, W. ZEUNER, V. DRUGAKOV, W. LOHMANN, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, P. G. PELFER, A. BAMBERGER, D. DOBUR, F. KARSTENS, N. N. VLASOV, P. J. BUSSEY, A. T. DOYLE, W. DUNNE, M. FORREST, M. ROSIN, D. H. SAXON, I. O. SKILLICORN, I. GIALAS, K. PAPAGEORGIU, U. HOLM, R. KLANNER, E. LOHRMANN, H. PERREY, P. SCHLEPER, T. SCHÖRNER SADENIUS, J. SZTUK, H. STADIE, M. TURCATO, C. FOUDAS, C. FRY, K. R. LONG, A. D. TAPPER, T. MATSUMOTO, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A. N. BARAKBAEV, E. G. BOOS, N. S. POKROVSKIY, B. O. ZHAUTYKOV, V. AUSHEV, O. BACHYNSKA, M. BORODIN, I. KADENKO, A. KOZULIA, V. LIBOV, D. LONTKOVSKYI, I. MAKARENKO, I.U. SOROKIN, A. VERBYTSKYI, O. VOLYNETS, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, M. JIMENEZ, L. LABARGA, J. DEL PESO, E. RON, M. SOARES, J. TERRÓN, M. ZAMBRANA, F. CORRIVEAU, C. LIU, J. SCHWARTZ, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, B. A. DOLGOSHEIN, D. GLADKOV, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R. K. DEMENTIEV, P. F. ERMOLOV, L. K. GLADILIN, Y.U. A. GOLUBKOV, L. A. KHEIN, I. A. KORZHAVINA, V. A. KUZMIN, B. B. LEVCHENKO, O. Y.U. LUKINA, A. S. PROSKURYAKOV, L. M. SHCHEGLOVA, D. S. ZOTKIN, I. ABT, A. CALDWELL, D. KOLLAR, B. REISERT, W. B. SCHMIDKE, G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, N. BRÜMMER, B. BYLSMA, L. S. DURKIN, A. LEE, T. Y. LING, P. D. ALLFREY, M. A. BELL, A. M. COOPER SARKAR, R. C. E. DEVENISH, J. FERRANDO, B. FOSTER, C. GWENLAN, K. KORCSAK GORZO, K. OLIVER, A. ROBERTSON, C. URIBE ESTRADA, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, B. Y. OH, A. RAVAL, J. J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J. E. COLE, J. C. HART, H. ABRAMOWICZ, R. INGBIR, S. KANANOV, A. LEVY, A. STERN, M. KUZE, J. MAEDA, R. HORI, S. KAGAWA, N. OKAZAKI, S. SHIMIZU, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, O. OTA, Y. D. RI, M. COSTA, M. I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, J. F. MARTIN, T. P. STEWART, S. K. BOUTLE, J. M. BUTTERWORTH, T. W. JONES, J. H. LOIZIDES, M. WING, B. BRZOZOWSKA, J. CIBOROWSKI, G. GRZELAK, P. KULINSKI, P. LUZNIAK, J. MALKA, R. J. NOWAK, J. M. PAWLAK, W. PERLANSKI, T. TYMIENIECKA, A. F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, A. UKLEJA, Y. EISENBERG, D. HOCHMAN, U. KARSHON, E. BROWNSON, D. D. REEDER, A. A. SAVIN, W. H. SMITH, H. WOLFE, S. BHADRA, C. D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, J. STANDAGE, J. WHYTE, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, SARTORELLI, GABRIELLA, RINALDI, LORENZO, S. CHEKANOV, M. DERRICK, S. MAGILL, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, F. CINDOLO, M. CORRADI, G. IACOBUCCI, A. MARGOTTI, R. NANIA, A. POLINI, S. ANTONELLI, M. BASILE, M. BINDI, L. CIFARELLI, A. CONTIN, S. DE PASQUALE, G. SARTORELLI, A. ZICHICHI, D. BARTSCH, I. BROCK, H. HARTMANN, E. HILGER, H.-P. JAKOB, M. JÜNGST, A.E. NUNCIO-QUIROZ, E. PAUL, U. SAMSON, V. SCHÖNBERG, R. SHEHZADI, M. WLASENKO, N.H. BROOK, G.P. HEATH, J.D. MORRIS, M. KAUR, P. KAUR, I. SINGH, M. CAPUA, S. FAZIO, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J.Y. KIM, Z.A. IBRAHIM, B. KAMALUDDIN, W.A.T. WAN ABDULLAH, Y. NING, Z. REN, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA-BOLD, D. KISIELEWSKA, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, A. KOTANSKI, W. SLOMINSKI, O. BEHNKE, U. BEHRENS, I. BLOCH, C. BLOHM, A. BONATO, K. BORRAS, D. BOT, R. CIESIELSKI, N. COPPOLA, S. FANG, J. FOURLETOVA, A. GEISER, P. GÖTTLICHER, J. GREBENYUK, I. GREGOR, O. GUTSCHE, T. HAAS, W. HAIN, A. HÜTTMANN, J. JANUSCHEK, B. KAHLE, I.I. KATKOV, U. KLEIN, U. KÖTZ, H. KOWALSKI, M. LISOVYI, E. LOBODZINSKA, B. LÖHR, R. MANKEL, I.-A. MELZER-PELLMANN, S. MIGLIORANZI, A. MONTANARI, T. NAMSOO, D. NOTZ, A. PARENTI, L. RINALDI, P. ROLOFF, I. RUBINSKY, U. SCHNEEKLOTH, A. SPIRIDONOV, D. SZUBA, J. SZUBA, T. THEEDT, J. UKLEJA, G. WOLF, K. WRONA, A.G. YAGUES MOLINA, C. YOUNGMAN, W. ZEUNER, V. DRUGAKOV, W. LOHMANN, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, P. G. PELFER, A. BAMBERGER, D. DOBUR, F. KARSTENS, N.N. VLASOV, P.J. BUSSEY, A.T. DOYLE, W. DUNNE, M. FORREST, M. ROSIN, D.H. SAXON, I.O. SKILLICORN, I. GIALAS, K. PAPAGEORGIU, U. HOLM, R. KLANNER, E. LOHRMANN, H. PERREY, P. SCHLEPER, T. SCHÖRNER-SADENIUS, J. SZTUK, H.STADIE, M. TURCATO, C. FOUDAS, C. FRY, K.R. LONG, A.D. TAPPER, T. MATSUMOTO, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, N.S. POKROVSKIY, B.O. ZHAUTYKOV, V. AUSHEV, O. BACHYNSKA, M. BORODIN, I. KADENKO, A. KOZULIA, V. LIBOV, D. LONTKOVSKYI, I. MAKARENKO, IU. SOROKIN, A. VERBYTSKYI, O. VOLYNETS, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, M. JIMENEZ, L. LABARGA, J. DEL PESO, E. RON, M. SOARES, J. TERRÓN, M. ZAMBRANA, F. CORRIVEAU, C. LIU, J. SCHWARTZ, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, B.A. DOLGOSHEIN, D. GLADKOV, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R.K. DEMENTIEV, P.F.ERMOLOV, L.K. GLADILIN, YU.A. GOLUBKOV, L.A. KHEIN, I.A. KORZHAVINA, V.A.KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, D.S. ZOTKIN, I. ABT, A. CALDWELL, D. KOLLAR, B. REISERT, W.B. SCHMIDKE, G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, N. BRÜMMER, B. BYLSMA, L.S. DURKIN, A. LEE, T.Y. LING, P.D. ALLFREY, M.A. BELL, A.M. COOPER-SARKAR, R.C.E. DEVENISH, J. FERRANDO, B.FOSTER, C. GWENLAN, K. KORCSAK-GORZO, K. OLIVER, A. ROBERTSON, C. URIBE-ESTRADA, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, B.Y. OH, A. RAVAL, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J.E. COLE, J.C. HART, H. ABRAMOWICZ, R. INGBIR, S. KANANOV, A. LEVY, A. STERN, M. KUZE, J. MAEDA, R. HORI, S. KAGAWA, N. OKAZAKI, S. SHIMIZU, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, O. OTA, Y.D. RI, M.COSTA, M.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, J.F. MARTIN, T.P. STEWART, S.K. BOUTLE, J.M. BUTTERWORTH, T.W. JONES, J.H. LOIZIDES, M. WING, B. BRZOZOWSKA, J. CIBOROWSKI, G. GRZELAK, P. KULINSKI, P. LUZNIAK, J. MALKA, R.J.NOWAK, J.M. PAWLAK, W. PERLANSKI, T. TYMIENIECKA, A.F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, A. UKLEJA, Y. EISENBERG, D. HOCHMAN, U. KARSHON, E. BROWNSON, D.D. REEDER, A.A. SAVIN, W.H. SMITH, H. WOLFE, S. BHADRA, C.D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, J. STANDAGE, and J. WHYTE.
Subjects: CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, J/PSI PRODUCTION, CONSTRUCTION, DESIGN, LUMINOSITY, SYSTEM, HERA, High Energy Physics - Experiment, High Energy Physics, ZEUS Collaboration, High Energy Physics::Experiment, ddc:530, Nuclear Experiment
Abstract: The exclusive photoproduction reaction gamma p --> Upsilon p has been studied with the ZEUS experiment in ep collisions at HERA using an integrated luminosity of 468 pb^{-1}. The measurement covers the kinematic range 60, Comment: 13 pages, 2 figures and 1 Table
Published: 2009

44. Measurement of neutral currente±pcross sections at high Bjorkenxwith the ZEUS detector

Author: B. B. Levchenko, Takuya Nobe, J. Szuba, J. F. Martin, Shoichi Yamada, R.C.E. Devenish, T. Schörner-Sadenius, Allen Caldwell, Janna Katharina Behr, Guenter Wolf, B. Brzozowska, Mykhailo Lisovyi, L. M. Shcheglova, L. Stanco, Nazar Stefaniuk, Zainol Abidin Ibrahim, James Ferrando, K. Mujkic, Denys Lontkovskyi, T. Tymieniecka, A. Bruni, A. M. Cooper-Sarkar, Aharon Levy, F. Mohamad Idris, Yu. A. Golubkov, U. Kötz, Aleksander Filip Żarnecki, Nazar Bartosik, E. Paul, P. Stopa, Uta Klein, J. Sztuk-Dambietz, S. Bhadra, R. J. Nowak, D. Szuba, Enrico Tassi, I. Abt, V. Samojlov, O. Kononenko, G. Hartner, I. M. Gregor, Robert Ciesielski, O. Bachynska, Vladyslav Libov, B. Löhr, J. Maeda, T. Tsurugai, Wolfgang Lohmann, B. Foster, S. Dusini, Ulf Behrens, H. Kowalski, Oleksii Turkot, O. Behnke, Ada Solano, J. Grebenyuk, W. Hain, L. K. Gladilin, R. K. Dementiev, V. Aushev, V. Trusov, Ian Brock, J. Malka, Ganna Dolinska, Hanno Perrey, Ozan Arslan, Halina Abramowicz, Sebastian Mergelmeyer, V. Bokhonov, S. Limentani, K. Wichmann, M. Adamus, A. Raval, Danuta Kisielewska, T. P. Stewart, Yu. Onishchuk, Leszek Adamczyk, A.S. Proskuryakov, Y. Aushev, D. H. Saxon, Marcella Capua, Katsuo Tokushuku, D. Notz, D.S. Zotkin, C. D. Catterall, Andrii Gizhko, J. Tomaszewska, P. Roloff, U. Karshon, O. Yu. Lukina, Janusz Chwastowski, N. Kovalchuk, O. Shkola, N. Zakharchuk, R. Shevchenko, A. Longhin, Volodymyr Myronenko, T. Temiraliev, I. Singh, N. Kondrashova, A. Nigro, Achim Geiser, D. Hochman, Alexander Spiridonov, P. J. Bussey, M. Kuze, E. Lohrmann, Orel Gueta, Andrii Verbytskyi, Marta Ruspa, J. Ciborowski, J. Schwartz, Grzegorz Gach, Masaki Ishitsuka, V. Drugakov, I. Kadenko, W. Slominski, Marco Schioppa, I. Makarenko, G. Grzelak, Manjit Kaur, Roman Walczak, Ie. Korol, Valentina Sola, F. Januschek, Lev Khein, Edouard Boos, I. O. Skillicorn, Ewelina Lobodzinska, S. Kananov, N.S. Pokrovskiy, Y. Iga, B.O. Zhautykov, S. Antonelli, Yasunori Yamazaki, Matthew Wing, U. Schneekloth, W. Perlanski, I. A. Korzhavina, G. D'Agostini, A. Garfagnini, O. Zenaiev, O. Gogota, Francois Corriveau, Robert Klanner, A. N. Barakbaev, A. Kotański, Oleg Kuprash, I. Rubinsky, A. Stern, Ingo Bloch, Marcin Pawel Guzik, R. Aggarwal, W. B. Schmidke, Mariusz Przybycien, M. Corradi, O. Viazlo, R. Hori, R. Brugnera, Kerstin Borras, A. Trofymov, W. A. T. Wan Abdullah, K. Olkiewicz, Jan Figiel, A. Iudin, A. Bertolin, L. Zawiejski, M. Turcato, Kunihiro Nagano, P. Kaur, N. Zhmak, and T. Kanno
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Distribution function, Neutral current, Parton, HERA, Reconstruction method, Boson
Abstract: The neutral current ${e}^{\ifmmode\pm\else\textpm\fi{}}p$ cross section has been measured up to values of Bjorken $x\ensuremath{\cong}1$ with the ZEUS detector at HERA using an integrated luminosity of $187\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ of ${e}^{\ensuremath{-}}p$ and $142\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ of ${e}^{+}p$ collisions at $\sqrt{s}=318\text{ }\text{ }\mathrm{GeV}$. Differential cross sections in $x$ and ${Q}^{2}$, the exchanged boson virtuality, are presented for ${Q}^{2}\ensuremath{\ge}725\text{ }\text{ }{\mathrm{GeV}}^{2}$. An improved reconstruction method and greatly increased amount of data allows a finer binning in the high-$x$ region of the neutral current cross section and leads to a measurement with much improved precision compared to a similar earlier analysis. The measurements are compared to Standard Model expectations based on a variety of recent parton distribution functions.
Published: 2014

45. Photoproduction of events with rapidity gaps between jets at HERA

Author: S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA, M. C. K. MATTINGLY, N. PAVEL, A. G. YAGÜES MOLINA, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, F. CINDOLO, M. CORRADI, S. DE PASQUALE, G. IACOBUCCI, A. MARGOTTI, R. NANIA, A. POLINI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, H. P. JAKOB, M. JÜNGST, O. M. KIND, E. PAUL, J. RAUTENBERG, R. RENNER, U. SAMSON, V. SCHÖNBERG, M. WANG, M. WLASENKO, N. H. BROOK, G. P. HEATH, J. D. MORRIS, T. NAMSOO, M. CAPUA, S. FAZIO, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J. Y. KIM, K. J. MA, Z. A. IBRAHIM, B. KAMALUDDIN, W. A. T. WAN ABDULLAH, Y. NING, Z. REN, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, M. GIL, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA BOLD, D. KISIELEWSKA, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, A. BONATO, K. BORRAS, N. COPPOLA, J. FOURLETOVA, A. GEISER, D. GLADKOV, P. GÖTTLICHER, I. GREGOR, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, U. KÖTZ, H. KOWALSKI, H. LIM, E. LOBODZINSKA, B. LÖHR, R. MANKEL, I. A. MELZER PELLMANN, A. MONTANARI, C. N. NGUYEN, D. NOTZ, A. E. NUNCIO QUIROZ, R. SANTAMARTA, U. SCHNEEKLOTH, H. STADIE, U. STÖSSLEIN, D. SZUBA, J. SZUBA, T. THEEDT, G. WATT, G. WOLF, K. WRONA, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, P. G. PELFER, A. BAMBERGER, D. DOBUR, F. KARSTENS, N. N. VLASOV, P. J. BUSSEY, A. T. DOYLE, W. DUNNE, J. FERRANDO, S. HANLON, D. H. SAXON, I. O. SKILLICORN, I. GIALAS, T. GOSAU, U. HOLM, R. KLANNER, E. LOHRMANN, H. SALEHI, P. SCHLEPER, T. SCHÖRNER SADENIUS, J. SZTUK, K. WICHMANN, K. WICK, C. FOUDAS, C. FRY, K. R. LONG, A. D. TAPPER, M. KATAOKA, T. MATSUMOTO, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A. N. BARAKBAEV, E. G. BOOS, A. DOSSANOV, N. S. POKROVSKIY, B. O. ZHAUTYKOV, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, M. JIMENEZ, L. LABARGA, J. DEL PESO, E. RON, J. TERRÓN, M. ZAMBRANA, F. CORRIVEAU, C. LIU, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, B. A. DOLGOSHEIN, I. RUBINSKY, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R. K. DEMENTIEV, P. F. ERMOLOV, L. K. GLADILIN, I. I. KATKOV, L. A. KHEIN, I. A. KORZHAVINA, V. A. KUZMIN, B. B. LEVCHENKO, O. Y.U. LUKINA, A. S. PROSKURYAKOV, L. M. SHCHEGLOVA, D. S. ZOTKIN, S. A. ZOTKIN, I. ABT, C. BÜTTNER, A. CALDWELL, D. KOLLAR, X. LIU, W. B. SCHMIDKE, J. SUTIAK, G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, N. BRÜMMER, B. BYLSMA, L. S. DURKIN, A. LEE, T. Y. LING, P. D. ALLFREY, M. A. BELL, A. M. COOPER SARKAR, A. COTTRELL, R. C. E. DEVENISH, B. FOSTER, C. GWENLAN, K. KORCSAK GORZO, S. PATEL, V. ROBERFROID, A. ROBERTSON, P. B. STRAUB, C. URIBE ESTRADA, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, R. CIESIELSKI, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, B. Y. OH, A. RAVAL, J. J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J. E. COLE, J. C. HART, H. ABRAMOWICZ, A. GABAREEN, R. INGBIR, S. KANANOV, A. LEVY, M. KUZE, R. HORI, S. KAGAWA, S. SHIMIZU, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, O. OTA, Y. D. RI, M. I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, J. F. MARTIN, J. M. BUTTERWORTH, R. HALL WILTON, T. W. JONES, J. H. LOIZIDES, M. R. SUTTON, C. TARGETT ADAMS, M. WING, B. BRZOZOWSKA, J. CIBOROWSKI, G. GRZELAK, P. KULINSKI, P. LUZNIAK, J. MALKA, R. J. NOWAK, J. M. PAWLAK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A. F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, I. GILLER, D. HOCHMAN, U. KARSHON, E. BROWNSON, T. DANIELSON, A. EVERETT, D. KÇIRA, D. D. REEDER, M. ROSIN, P. RYAN, A. A. SAVIN, W. H. SMITH, H. WOLFE, S. BHADRA, C. D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, M. SOARES, J. STANDAGE, J. WHYTE, ANTONELLI, STEFANO, BASILE, MAURIZIO, BINDI, MARCELLO, CIFARELLI, LUISA, CONTIN, ANDREA, RINALDI, LORENZO, SARTORELLI, GABRIELLA, S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, N. PAVEL, A.G. YAGÜES MOLINA, S. ANTONELLI, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, M. BINDI, D. BOSCHERINI, A. BRUNI, G. BRUNI, L. CIFARELLI, F. CINDOLO, A. CONTIN, M. CORRADI, S. DE PASQUALE, G. IACOBUCCI, A. MARGOTTI, R. NANIA, A. POLINI, L. RINALDI, G. SARTORELLI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, H.-P. JAKOB, M. JÜNGST, O.M. KIND, E. PAUL, J. RAUTENBERG, R. RENNER, U. SAMSON, V. SCHÖNBERG, M. WANG, M. WLASENKO, N.H. BROOK, G.P. HEATH, J.D. MORRIS, T. NAMSOO, M. CAPUA, S. FAZIO, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J.Y. KIM, K.J. MA, Z.A. IBRAHIM, B. KAMALUDDIN, W.A.T. WAN ABDULLAH, Y. NING, Z. REN, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, M. GIL, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA-BOLD, D. KISIELEWSKA, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, A. BONATO, K. BORRAS, N. COPPOLA, J. FOURLETOVA, A. GEISER, D. GLADKOV, P. GÖTTLICHER, I. GREGOR, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, U. KÖTZ, H. KOWALSKI, H. LIM, E. LOBODZINSKA, B. LÖHR, R. MANKEL, I.-A. MELZER-PELLMANN, A. MONTANARI, C.N. NGUYEN, D. NOTZ, A.E. NUNCIO-QUIROZ, R. SANTAMARTA, U. SCHNEEKLOTH, H. STADIE, U. STÖSSLEIN, D. SZUBA, J. SZUBA, T. THEEDT, G. WATT, G. WOLF, K. WRONA, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, P.G. PELFER, A. BAMBERGER, D. DOBUR, F. KARSTENS, N.N. VLASOV, P.J. BUSSEY, A.T. DOYLE, W. DUNNE, J. FERRANDO, S. HANLON, D.H. SAXON, I.O. SKILLICORN, I. GIALAS, T. GOSAU, U. HOLM, R. KLANNER, E. LOHRMANN, H. SALEHI, P. SCHLEPER, T. SCHÖRNER-SADENIUS, J. SZTUK, K. WICHMANN, K. WICK, C. FOUDAS, C. FRY, K.R. LONG, A.D. TAPPER, M. KATAOKA, T. MATSUMOTO, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, A. DOSSANOV, N.S. POKROVSKIY, B.O. ZHAUTYKOV, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, M. JIMENEZ, L. LABARGA, J. DEL PESO, E. RON, J. TERRÓN, M. ZAMBRANA, F. CORRIVEAU, C. LIU, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, B.A. DOLGOSHEIN, I. RUBINSKY, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R.K. DEMENTIEV, P.F. ERMOLOV, L.K. GLADILIN, I.I. KATKOV, L.A. KHEIN, I.A. KORZHAVINA, V.A. KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, D.S. ZOTKIN, S.A. ZOTKIN, I. ABT, C. BÜTTNER, A. CALDWELL, D. KOLLAR, X. LIU, W.B. SCHMIDKE, J. SUTIAK, G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, N. BRÜMMER, B. BYLSMA, L.S. DURKIN, A. LEE, T.Y. LING, P.D. ALLFREY, M.A. BELL, A.M. COOPER-SARKAR, A. COTTRELL, R.C.E. DEVENISH, B. FOSTER, C. GWENLAN, K. KORCSAK-GORZO, S. PATEL, V. ROBERFROID, A. ROBERTSON, P.B. STRAUB, C. URIBE-ESTRADA, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, R. CIESIELSKI, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, B.Y. OH, A. RAVAL, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J.E. COLE, J.C. HART, H. ABRAMOWICZ, A. GABAREEN, R. INGBIR, S. KANANOV, A. LEVY, M. KUZE, R. HORI, S. KAGAWA, S. SHIMIZU, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, O. OTA, Y.D. RI, M.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, J.F. MARTIN, J.M. BUTTERWORTH, R. HALL-WILTON, T.W. JONES, J.H. LOIZIDES, M.R. SUTTON, C. TARGETT-ADAMS, M. WING, B. BRZOZOWSKA, J. CIBOROWSKI, G. GRZELAK, P. KULINSKI, P. LUZNIAK, J. MALKA, R.J. NOWAK, J.M. PAWLAK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A.F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, I. GILLER, D. HOCHMAN, U. KARSHON, E. BROWNSON, T. DANIELSON, A. EVERETT, D. KÇIRA, D.D. REEDER, M. ROSIN, P. RYAN, A.A. SAVIN, W.H. SMITH, H. WOLFE, S. BHADRA, C.D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, M. SOARES, J. STANDAGE, and J. WHYTE
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Monte Carlo method, HERA, P(P)OVER-BAR COLLISIONS, COLOR-SINGLET EXCHANGE, FOS: Physical sciences, 01 natural sciences, Zeus (malware), High Energy Physics - Experiment, CROSS-SECTIONS, ENERGY, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, 0103 physical sciences, ddc:530, Rapidity, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Luminosity (scattering theory), CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, (P)OVER-BAR-P COLLISIONS, ELASTIC-SCATTERING, HADRON-COLLISIONS, CONSTRUCTION, 010308 nuclear & particles physics, Transverse plane, Pseudorapidity, High Energy Physics::Experiment, Energy (signal processing)
Abstract: The photoproduction of dijet events, where the two jets with the highest transverse energy are separated by a large gap in pseudorapidity, have been studied with the ZEUS detector using an integrated luminosity of 39 pb$^{-1}$. Rapidity-gap events are defined in terms of the energy flow between the jets, such that the total summed transverse energy in this region is less than some value $E_{\rm T}^{\rm CUT}$. The data show a clear excess over the predictions of standard photoproduction models. This is interpreted as evidence for a strongly interacting exchange of a color-singlet object. Monte Carlo models which include such a color-singlet exchange are able to describe the data., Comment: 28 pages, 13 figures, accepted by EPJ C
Published: 2007

46. Bose-Einstein correlations in one and two dimensions in deep inelastic scattering

Author: S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M. C. K. MATTINGLY, N. PAVEL, A. G. YAGÜES MOLINA, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, G. CARA ROMEO, F. CINDOLO, M. CORRADI, S. DE PASQUALE, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, A. PESCI, A. POLINI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H. P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, K. C. VOSS, M. WANG, M. WLASENKO, D. S. BAILEY, N. H. BROOK, J. E. COLE, G. P. HEATH, T. NAMSOO, S. ROBINS, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J. Y. KIM, K. J. MA, M. HELBICH, Y. NING, Z. REN, W. B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, D. SZUBA, L. ZAWIEJSKI, L. ADAMCZYK, T. BO_D, I. GRABOWSKA BO_D, D. KISIELEWSKA, A. M. KOWAL, J. _UKASIK, M. PRZYBYCIE, L. SUSZYCKI, J. SZUBA, A. KOTA_SKI, W. S_OMI_SKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, D. G. CASSEL, G. DREWS, J. FOURLETOVA, A. GEISER, D. GLADKOV, F. GOEBEL, P. GÖTTLICHER, R. GRACIANI DIAZ, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, M. KASEMANN, U. KÖTZ, H. KOWALSKI, G. KRAMBERGER, D. LELAS, H. LIM, B. LÖHR, R. MANKEL, M. MARTINEZ, I. A. MELZER PELLMANN, C. N. NGUYEN, D. NOTZ, A. E. NUNCIO QUIROZ, A. RAVAL, R. SANTAMARTA, U. SCHNEEKLOTH, U. STÖSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P. G. PELFER, A. BAMBERGER, A. BENEN, F. KARSTENS, D. DOBUR, N. N. VLASOV, P. J. BUSSEY, A. T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D. H. SAXON, I. O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHÖRNER SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, A.R. ZIEGLER, C. COLLINS TOOTH, C. FOUDAS, C. FRY, R. GONÇALO, K. R. LONG, A. D. TAPPER, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A. N. BARAKBAEV, E. G. BOOS, N. S. POKROVSKIY, B. O. ZHAUTYKOV, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZÁLEZ, M. JIMENEZ, L. LABARGA, J. DEL PESO, J. TERRÓN, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, C. LIU, S. PADHI, M. PLAMONDON, D. G. STAIRS, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, P. DANILOV, B. A. DOLGOSHEIN, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R. K. DEMENTIEV, P. F. ERMOLOV, L. K. GLADILIN, I. I. KATKOV, L. A. KHEIN, I. A. KORZHAVINA, V. A. KUZMIN, B. B. LEVCHENKO, O. Y.U. LUKINA, A. S. PROSKURYAKOV, L. M. SHCHEGLOVA, D. S. ZOTKIN, S. A. ZOTKIN, I. ABT, C. BÜTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, G. GRIGORESCU, S. GRIJPINK, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, E. DE WOLF, N. BRÜMMER, B. BYLSMA, L. S. DURKIN, T. Y. LING, P. D. ALLFREY, M. A. BELL, A. M. COOPER SARKAR, A. COTTRELL, R. C. E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P. B. STRAUB, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, R. CIESIELSKI, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, E. A. HEAPHY, F. METLICA, B. Y. OH, J. J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J. C. HART, H. ABRAMOWICZ, A. GABAREEN, M. GROYS, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, S. KAGAWA, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, K. MATSUZAWA, O. OTA, Y. D. RI, M. COSTA, M. I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, T. KOOP, J. F. MARTIN, A. MIREA, J. M. BUTTERWORTH, R. HALL WILTON, T. W. JONES, J. H. LOIZIDES, M. R. SUTTON, C. TARGETT ADAMS, M. WING, J. CIBOROWSKI, P. KULINSKI, P. _U˝NIAK, J. MALKA, R. J. NOWAK, J. M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. TYSZKIEWICZ, A. UKLEJA, J. UKLEJA, A. F. ˚ARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M. S. LIGHTWOOD, A. EVERETT, D. KÇIRA, S. LAMMERS, L. LI, D. D. REEDER, M. ROSIN, P. RYAN, A. A. SAVIN, W. H. SMITH, S. DHAWAN, S. BHADRA, C. D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, M. SOARES, J. STANDAGE, J. WHYTE, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, PALMONARI, FEDERICO, RINALDI, LORENZO, SARTORELLI, GABRIELLA, ZICHICHI, ANTONINO, Zeus (IHEF, IoP, FNWI), UCL, S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, N. PAVEL, A.G. YAGÜES MOLINA, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, G. CARA ROMEO, L. CIFARELLI, F. CINDOLO, A. CONTIN, M. CORRADI, S. DE PASQUALE, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, F. PALMONARI, A. PESCI, A. POLINI, L. RINALDI, G. SARTORELLI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H.-P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, K.C. VOSS, M. WANG, M. WLASENKO, D.S. BAILEY, N.H. BROOK, J.E. COLE, G.P. HEATH, T. NAMSOO, S. ROBINS, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J.Y. KIM, K.J. MA, M. HELBICH, Y. NING, Z. REN, W.B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, D. SZUBA, L. ZAWIEJSKI, L. ADAMCZYK, T. BO_D, I. GRABOWSKA-BO_D, D. KISIELEWSKA, A.M. KOWAL, J. _UKASIK, M. PRZYBYCIE, L. SUSZYCKI, J. SZUBA, A. KOTA_SKI, W. S_OMI_SKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, D.G. CASSEL, G. DREWS, J. FOURLETOVA, A. GEISER, D. GLADKOV, F. GOEBEL, P. GÖTTLICHER, R. GRACIANI DIAZ, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, M. KASEMANN, U. KÖTZ, H. KOWALSKI, G. KRAMBERGER, D. LELAS, H. LIM, B. LÖHR, R. MANKEL, M. MARTINEZ, I.-A. MELZER-PELLMANN, C.N. NGUYEN, D. NOTZ, A.E. NUNCIO-QUIROZ, A. RAVAL, R. SANTAMARTA, U. SCHNEEKLOTH, U. STÖSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P.G. PELFER, A. BAMBERGER, A. BENEN, F. KARSTENS, D. DOBUR, N.N. VLASOV, P.J. BUSSEY, A.T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D.H. SAXON, I.O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHÖRNER-SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, AR. ZIEGLER, C. COLLINS-TOOTH, C. FOUDAS, C. FRY, R. GONÇALO, K.R. LONG, A.D. TAPPER, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, N.S. POKROVSKIY, B.O. ZHAUTYKOV, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZÁLEZ, M. JIMENEZ, L. LABARGA, J. DEL PESO, J. TERRÓN, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, C. LIU, S. PADHI, M. PLAMONDON, D.G. STAIRS, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, P. DANILOV, B.A. DOLGOSHEIN, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R.K. DEMENTIEV, P.F. ERMOLOV, L.K. GLADILIN, I.I. KATKOV, L.A. KHEIN, I.A. KORZHAVINA, V.A. KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, D.S. ZOTKIN, S.A. ZOTKIN, I. ABT, C. BÜTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, G. GRIGORESCU, S. GRIJPINK, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, E. DE WOLF, N. BRÜMMER, B. BYLSMA, L.S. DURKIN, T.Y. LING, P.D. ALLFREY, M.A. BELL, A.M. COOPER-SARKAR, A. COTTRELL, R.C.E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P.B. STRAUB, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, R. CIESIELSKI, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, E.A. HEAPHY, F. METLICA, B.Y. OH, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J.C. HART, H. ABRAMOWICZ, A. GABAREEN, M. GROYS, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, S. KAGAWA, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, K. MATSUZAWA, O. OTA, Y.D. RI, M. COSTA, M.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, T. KOOP, J.F. MARTIN, A. MIREA, J.M. BUTTERWORTH, R. HALL-WILTON, T.W. JONES, J.H. LOIZIDES, M.R. SUTTON, C. TARGETT-ADAMS, M. WING, J. CIBOROWSKI, P. KULINSKI, P. _U˝NIAK, J. MALKA, R.J. NOWAK, J.M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. TYSZKIEWICZ, A. UKLEJA, J. UKLEJA, A.F. ˚ARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M.S. LIGHTWOOD, A. EVERETT, D. KÇIRA, S. LAMMERS, L. LI, D.D. REEDER, M. ROSIN, P. RYAN, A.A. SAVIN, W.H. SMITH, S. DHAWAN, S. BHADRA, C.D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, M. SOARES, J. STANDAGE, and J. WHYTE
Subjects: Particle physics, Nuclear and High Energy Physics, Photon, HERA, FOS: Physical sciences, TRACKING DETECTOR, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Particle tracking detectors, 0103 physical sciences, HADRONIC Z(0) DECAYS, ZEUS BARREL CALORIMETER, REAR CALORIMETER, BREIT FRAME, LOW Q(2), Bibliography, High Energy Physics, 010306 general physics, QC, ZEUS Collaboration, Interferometry, MULTIPLICITY, Physics, Neutral current, 010308 nuclear & particles physics, Scattering, Bose–Einstein correlations, Deep inelastic scattering, Transverse plane, High Energy Physics::Experiment
Abstract: Bose-Einstein correlations in one and two dimensions have been studied in deep inelastic EP scattering events measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb-1. The correlations are independent of the virtuality of the exchanged photon, Q2, in the range 0.1100 GeV2. The two-dimensional shape of the particle-production source was investigated, and a significant difference between the transverse and the longitudinal dimensions of the source is observed.This difference also shows no Q2 dependence.The results demonstrate that Bose-Einstein interference, and hence the size of the particle-production source, is insensitive to the hard subprocess., Comment: 17 pages, 4 EPS figures, 2 tables
Published: 2004

47. Evidence for a narrow baryonic state decaying to K0s-(anti)proton in deep inelastic scattering at HERA

Author: S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M. C. K. MATTINGLY, N. PAVEL, A. G. YAGÜES MOLINA, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, G. CARA ROMEO, F. CINDOLO, M. CORRADI, S. DE PASQUALE, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, A. PESCI, A. POLINI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H. P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, K. C. VOSS, M. WANG, M. WLASENKO, D. S. BAILEY, N. H. BROOK, J. E. COLE, G. P. HEATH, T. NAMSOO, S. ROBINS, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J. Y. KIM, K. J. MA, M. HELBICH, Y. NING, Z. REN, W. B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, D. SZUBA, L. ZAWIEJSKI, L. ADAMCZYK, T. BO_D, I. GRABOWSKA BO_D, D. KISIELEWSKA, A. M. KOWAL, J. _UKASIK, M. PRZYBYCIE, L. SUSZYCKI, J. SZUBA, A. KOTA_SKI, W. S_OMI_SKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, D. G. CASSEL, G. DREWS, J. FOURLETOVA, A. GEISER, D. GLADKOV, F. GOEBEL, P. GÖTTLICHER, R. GRACIANI DIAZ, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, M. KASEMANN, U. KÖTZ, H. KOWALSKI, G. KRAMBERGER, D. LELAS, H. LIM, B. LÖHR, R. MANKEL, M. MARTINEZ, I. A. MELZER PELLMANN, C. N. NGUYEN, D. NOTZ, A. E. NUNCIO QUIROZ, A. RAVAL, R. SANTAMARTA, U. SCHNEEKLOTH, U. STÖSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P. G. PELFER, A. BAMBERGER, A. BENEN, F. KARSTENS, D. DOBUR, N. N. VLASOV, P. J. BUSSEY, A. T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D. H. SAXON, I. O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHÖRNER SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, A.R. ZIEGLER, C. COLLINS TOOTH, C. FOUDAS, C. FRY, R. GONÇALO, K. R. LONG, A. D. TAPPER, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A. N. BARAKBAEV, E. G. BOOS, N. S. POKROVSKIY, B. O. ZHAUTYKOV, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZÁLEZ, M. JIMENEZ, L. LABARGA, J. DEL PESO, J. TERRÓN, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, C. LIU, S. PADHI, M. PLAMONDON, D. G. STAIRS, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, P. DANILOV, B. A. DOLGOSHEIN, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R. K. DEMENTIEV, P. F. ERMOLOV, L. K. GLADILIN, I. I. KATKOV, L. A. KHEIN, I. A. KORZHAVINA, V. A. KUZMIN, B. B. LEVCHENKO, O. Y.U. LUKINA, A. S. PROSKURYAKOV, L. M. SHCHEGLOVA, D. S. ZOTKIN, S. A. ZOTKIN, I. ABT, C. BÜTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, G. GRIGORESCU, S. GRIJPINK, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, E. DE WOLF, N. BRÜMMER, B. BYLSMA, L. S. DURKIN, T. Y. LING, P. D. ALLFREY, M. A. BELL, A. M. COOPER SARKAR, A. COTTRELL, R. C. E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P. B. STRAUB, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, R. CIESIELSKI, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, E. A. HEAPHY, F. METLICA, B. Y. OH, J. J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J. C. HART, H. ABRAMOWICZ, A. GABAREEN, M. GROYS, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, S. KAGAWA, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, K. MATSUZAWA, O. OTA, Y. D. RI, M. COSTA, M. I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, T. KOOP, J. F. MARTIN, A. MIREA, J. M. BUTTERWORTH, R. HALL WILTON, T. W. JONES, J. H. LOIZIDES, M. R. SUTTON, C. TARGETT ADAMS, M. WING, J. CIBOROWSKI, P. KULINSKI, P. _U, 733, NIAK, J. MALKA, R. J. NOWAK, J. M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. TYSZKIEWICZ, A. UKLEJA, J. UKLEJA, A. F. , #730, ARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M. S. LIGHTWOOD, A. EVERETT, D. KÇIRA, S. LAMMERS, L. LI, D. D. REEDER, M. ROSIN, P. RYAN, A. A. SAVIN, W. H. SMITH, S. DHAWAN, S. BHADRA, C. D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, M. SOARES, J. STANDAGE, J. WHYTE, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, PALMONARI, FEDERICO, RINALDI, LORENZO, SARTORELLI, GABRIELLA, ZICHICHI, ANTONINO, S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, N. PAVEL, A.G. YAGÜES MOLINA, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, G. CARA ROMEO, L. CIFARELLI, F. CINDOLO, A. CONTIN, M. CORRADI, S. DE PASQUALE, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, F. PALMONARI, A. PESCI, A. POLINI, L. RINALDI, G. SARTORELLI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H.-P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, K.C. VOSS, M. WANG, M. WLASENKO, D.S. BAILEY, N.H. BROOK, J.E. COLE, G.P. HEATH, T. NAMSOO, S. ROBINS, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J.Y. KIM, K.J. MA, M. HELBICH, Y. NING, Z. REN, W.B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, D. SZUBA, L. ZAWIEJSKI, L. ADAMCZYK, T. BO_D, I. GRABOWSKA-BO_D, D. KISIELEWSKA, A.M. KOWAL, J. _UKASIK, M. PRZYBYCIE_, L. SUSZYCKI, J. SZUBA, A. KOTA_SKI, W. S_OMI_SKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, D.G. CASSEL, G. DREWS, J. FOURLETOVA, A. GEISER, D. GLADKOV, F. GOEBEL, P. GÖTTLICHER, R. GRACIANI DIAZ, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, M. KASEMANN, U. KÖTZ, H. KOWALSKI, G. KRAMBERGER, D. LELAS, H. LIM, B. LÖHR, R. MANKEL, M. MARTINEZ, I.-A. MELZER-PELLMANN, C.N. NGUYEN, D. NOTZ, A.E. NUNCIO-QUIROZ, A. RAVAL, R. SANTAMARTA, U. SCHNEEKLOTH, U. STÖSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P.G. PELFER, A. BAMBERGER, A. BENEN, F. KARSTENS, D. DOBUR, N.N. VLASOV, P.J. BUSSEY, A.T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D.H. SAXON, I.O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHÖRNER-SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, AR. ZIEGLER, C. COLLINS-TOOTH, C. FOUDAS, C. FRY, R. GONÇALO, K.R. LONG, A.D. TAPPER, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, N.S. POKROVSKIY, B.O. ZHAUTYKOV, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZÁLEZ, M. JIMENEZ, L. LABARGA, J. DEL PESO, J. TERRÓN, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, C. LIU, S. PADHI, M. PLAMONDON, D.G. STAIRS, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, P. DANILOV, B.A. DOLGOSHEIN, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R.K. DEMENTIEV, P.F. ERMOLOV, L.K. GLADILIN, I.I. KATKOV, L.A. KHEIN, I.A. KORZHAVINA, V.A. KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, D.S. ZOTKIN, S.A. ZOTKIN, I. ABT, C. BÜTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, G. GRIGORESCU, S. GRIJPINK, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, E. DE WOLF, N. BRÜMMER, B. BYLSMA, L.S. DURKIN, T.Y. LING, P.D. ALLFREY, M.A. BELL, A.M. COOPER-SARKAR, A. COTTRELL, R.C.E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P.B. STRAUB, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, R. CIESIELSKI, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, E.A. HEAPHY, F. METLICA, B.Y. OH, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J.C. HART, H. ABRAMOWICZ, A. GABAREEN, M. GROYS, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, S. KAGAWA, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, K. MATSUZAWA, O. OTA, Y.D. RI, M. COSTA, M.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, T. KOOP, J.F. MARTIN, A. MIREA, J.M. BUTTERWORTH, R. HALL-WILTON, T.W. JONES, J.H. LOIZIDES, M.R. SUTTON, C. TARGETT-ADAMS, M. WING, J. CIBOROWSKI, P. KULINSKI, P. _U&#733, NIAK, J. MALKA, R.J. NOWAK, J.M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. TYSZKIEWICZ, A. UKLEJA, J. UKLEJA, A.F. &#730, and ARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M.S. LIGHTWOOD, A. EVERETT, D. KÇIRA, S. LAMMERS, L. LI, D.D. REEDER, M. ROSIN, P. RYAN, A.A. SAVIN, W.H. SMITH, S. DHAWAN, S. BHADRA, C.D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, M. SOARES, J. STANDAGE, J. WHYTE
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: A resonance search has been made in the K0s p and K0s pbar invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb-1. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300-318 GeV for exchanged photon virtuality, Q2, above 1 GeV2. Recent results from fixed-target experiments give evidence for a narrow baryon resonance decaying to K+ n and K0s p, interpreted as a pentaquark. The results presented here support the existence of such state, with a mass of 1521.5+/-1.5(stat.)^{+2.8}_{-1.7}(syst.) MeV and a Gaussian width consistent with the experimental resolution of 2 MeV. The signal is visible at high Q2 and, for Q2>20 GeV2, contains 221+/-48 events. The probability of a similar signal anywhere in the range 1500-1560 MeV arising from fluctuations of the background is below 6x10^{-5}.
Published: 2004

48. Measurement of charm fragmentation fractions in photoproduction at HERA

Author: Allen Caldwell, Zainol Abidin Ibrahim, M. Derrick, H.-P. Jakob, T. Tymieniecka, A. Parenti, U. Kötz, F. Mohamad Idris, R. Brugnera, R. Yoshida, R. J. Nowak, Kerstin Borras, A. Zichichi, D. Notz, A.G. Yagües-Molina, Ada Solano, J. M. Pawlak, A. Trofymov, K. Mujkic, D.S. Zotkin, R. Hori, Dong-Chul Son, C. D. Catterall, E. Hilger, S. Limentani, E.G. Boos, Takuya Nobe, A. Garfagnini, Krzysztof Piotrzkowski, O. Kononenko, Leszek Adamczyk, Alexander Spiridonov, I. A. Melzer-Pellmann, S. Fazio, Roberto Sacchi, Alessia Bruni, B.Y. Oh, R. Shevchenko, A. Longhin, Tobias M. Haas, U. Samson, C. Blohm, I. Singh, M.I. Ferrero, Aharon Levy, Fernando Barreiro, S. De Pasquale, F. Karstens, F. J. Sciulli, P.F. Ermolov, N.S. Pokrovskiy, A. Nigro, Mykhailo Lisovyi, A. T. Doyle, J. Sztuk-Dambietz, Zukhaimira Zolkapli, S.I. Suchkov, D.D. Reeder, F. Dal Corso, R.C.E. Devenish, O. Turkot, Kenneth Long, Ramoona Shehzadi, Massimo Corradi, I. Gialas, B. Kahle, G. Bari, Roberto Carlin, Didar Dobur, Rosario Nania, Denys Lontkovskyi, Francois Corriveau, L. Cifarelli, Jose Repond, James Ferrando, J. Maeda, B.O. Zhautykov, A. Kotański, Y. Aushev, Alessandro Montanari, Alexander Tapper, S. Magill, Marcello Bindi, B. Pawlik, W. H. Smith, Ganna Dolinska, Ozan Arslan, N. Kovalchuk, Nazar Bartosik, Enrico Tassi, John Hart, Mário Costa, J. J. Whitmore, J. Malka, M. Jüngst, Ben Bylsma, D. Szuba, G. Hartner, Y. Ning, N. Brümmer, Katsuo Tokushuku, A. E. Nuncio-Quiroz, W. A. T. Wan Abdullah, D. Bot, A. Pellegrino, M.C.K. Mattingly, L. S. Durkin, Ewelina Lobodzinska, T. Tsurugai, J. Schwartz, Robert Ciesielski, G. Grzelak, H. Hartmann, Valentina Sola, A. N. Barakbaev, V. Bokhonov, Giuseppe Barbagli, I. Makarenko, M. Wlasenko, Andrii Gizhko, Janusz Chwastowski, U. Karshon, Oleg Kuprash, Masahiro Kuze, U. Schneekloth, Lorenzo Bellagamba, Claudia Glasman, T. Schörner-Sadenius, Y. Iga, K. Olkiewicz, R. Hamatsu, O. Bachynska, Els Koffeman, Peter Schleper, Claire Gwenlan, P. Göttlicher, Iwona Grabowska-Bold, B. B. Levchenko, F. Januschek, S. Kitamura, H. Wolfe, O. Behnke, I. O. Skillicorn, N. Coppola, I. Rubinsky, Andrea Contin, Vladyslav Libov, R. Mankel, Wolfgang Lohmann, G. Susinno, L. Suszycki, V. Drugakov, J. Szuba, K. Wichmann, M. Adamus, G. Marini, Wolfram Dietrich Zeuner, E. Lohrmann, A. Bamberger, Halina Abramowicz, A. Stern, A.S. Proskuryakov, J. F. Martin, Lev Khein, Graziano Bruni, L. M. Shcheglova, Hartmut Stadie, Ian Brock, Grzegorz Gach, Uta Klein, D. Gladkov, T. W. Jones, Jan Figiel, S. Yamada, Yu. A. Golubkov, E. Paul, S. Kananov, Guenter Wolf, H.G.J.M. Tiecke, I. Kadenko, A. Iudin, G. Grigorescu, Marcella Capua, L. Stanco, R. Ingbir, Shinichi Shimizu, A.G. Robertson, N. Vlasov, B. Brzozowska, P. Stopa, Mariusz Przybycien, O. Viazlo, O. Yu. Lukina, B. Reisert, Tomasz Bold, A. Hüttmann, D. H. Saxon, Yuji Yamazaki, Igor Katkov, P.M. Kooijman, Achim Geiser, J. Tomaszewska, V. Myronenko, V. Sosnovtsev, S. Fang, Sebastian Mergelmeyer, Nazar Stefaniuk, Anselmo Margotti, J. Grebenyuk, L.W. Wiggers, Juan Terron, Marco Schioppa, P. G. Pelfer, Marcin Pawel Guzik, W. Słomiński, Ulf Behrens, Federico Cindolo, H. Kowalski, Hanno Perrey, S. Antonelli, V. Trusov, R. Aggarwal, Ingrid-Maria Gregor, Anna Mastroberardino, Ie. Korol, O. Gogota, Elisabetta Gallo, Amanda Cooper-Sarkar, Yu. Onishchuk, T. Theedt, I. A. Korzhavina, V. Schönberg, N. Kondrashova, W. B. Schmidke, O. Zenaiev, E. Brownson, Michele Arneodo, Orel Gueta, Andrii Verbytskyi, Marta Ruspa, K. Papageorgiu, W. Perlanski, S. Bhadra, N. Okazaki, Masaki Ishitsuka, John Morris, Peter Bussey, B. Löhr, K. Wrona, B. Foster, S. Dusini, J. Y. Kim, Pietro Antonioli, R. K. Dementiev, A. Eskreys, Janna Katharina Behr, M. Vázquez, N. Zhmak, Pawel Plucinski, T. Namsoo, J. Del Peso, G. D'Agostini, T. Y. Ling, V. Aushev, Robert Klanner, Y. Eisenberg, I. Abt, Sergei Chekanov, Boris Dolgoshein, Dirk-Uwe Bartsch, Y. D. Ri, A. Lee, V. Monaco, M. Basile, G. Sartorelli, W. Hain, S. Miglioranzi, A. Raval, Danuta Kisielewska, D. Hochman, S. Schlenstedt, T. P. Stewart, C. Youngman, O. Shkola, Alessandro Polini, N. Zakharchuk, Philipp Roloff, J. Ciborowski, Alexey Antonov, Manjit Kaur, Leonid Gladilin, Roman Walczak, Davide Boscherini, Matthew Wing, Zhongliang Ren, A. Keramidas, A. Bertolin, A. Galas, Aleksander Filip Żarnecki, L. Zawiejski, M. Turcato, Kunihiro Nagano, B. Musgrave, P. Kaur, A. Stifutkin, T. Kanno, Alexander Savin, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamu, R. Aggarwal, S. Antonelli, P. Antonioli, A. Antonov, M. Arneodo, O. Arslan, V. Aushev, Y. Aushev, O. Bachynska, A. Bamberger, A.N. Barakbaev, G. Barbagli, G. Bari, F. Barreiro, N. Bartosik, D. Bartsch, M. Basile, O. Behnke, J. Behr, U. Behren, L. Bellagamba, A. Bertolin, S. Bhadra, M. Bindi, C. Blohm, V. Bokhonov, T. Bold, E.G. Boo, K. Borra, D. Boscherini, D. Bot, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, A. Bruni, G. Bruni, B. Brzozowska, P.J. Bussey, B. Bylsma, A. Caldwell, M. Capua, R. Carlin, C.D. Catterall, S. Chekanov, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, A.M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, G. D’Agostini, F. Dal Corso, J. Peso, R.K. Dementiev, S. Pasquale, M. Derrick, R.C.E. Devenish, D. Dobur, B.A. Dolgoshein, G. Dolinska, A.T. Doyle, V. Drugakov, L.S. Durkin, S. Dusini, Y. Eisenberg, P.F. Ermolov, A. Eskrey, S. Fang, S. Fazio, J. Ferrando, M.I. Ferrero, J. Figiel, B. Foster, G. Gach, A. Gala, E. Gallo, A. Garfagnini, A. Geiser, I. Giala, A. Gizhko, L.K. Gladilin, D. Gladkov, C. Glasman, O. Gogota, Yu.A. Golubkov, P. Göttlicher, I. Grabowska-Bold, J. Grebenyuk, I. Gregor, G. Grigorescu, G. Grzelak, O. Gueta, M. Guzik, C. Gwenlan, T. Haa, W. Hain, R. Hamatsu, J.C. Hart, H. Hartmann, G. Hartner, E. Hilger, D. Hochman, R. Hori, A. Hüttmann, Z.A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, A. Iudin, H.-P. Jakob, F. Januschek, T.W. Jone, M. Jüngst, I. Kadenko, B. Kahle, S. Kananov, T. Kanno, U. Karshon, F. Karsten, I.I. Katkov, M. Kaur, P. Kaur, A. Keramida, L.A. Khein, J.Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, U. Klein, E. Koffeman, N. Kondrashova, O. Kononenko, P. Kooijman, Ie. Korol, I.A. Korzhavina, A. Kotanski, U. Kötz, N. Kovalchuk, H. Kowalski, O. Kuprash, M. Kuze, A. Lee, B.B. Levchenko, A. Levy, V. Libov, S. Limentani, T.Y. Ling, M. Lisovyi, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, K.R. Long, A. Longhin, D. Lontkovskyi, O.Yu. Lukina, J. Maeda, S. Magill, I. Makarenko, J. Malka, R. Mankel, A. Margotti, G. Marini, J.F. Martin, A. Mastroberardino, M.C.K. Mattingly, I.-A. Melzer-Pellmann, S. Mergelmeyer, S. Miglioranzi, F. Mohamad Idri, V. Monaco, A. Montanari, J.D. Morri, K. Mujkic, B. Musgrave, V. Myronenko, K. Nagano, T. Namsoo, R. Nania, A. Nigro, Y. Ning, T. Nobe, D. Notz, R.J. Nowak, A.E. Nuncio-Quiroz, B.Y. Oh, N. Okazaki, K. Olkiewicz, Yu. Onishchuk, K. Papageorgiu, A. Parenti, E. Paul, J.M. Pawlak, B. Pawlik, P. G. Pelfer, A. Pellegrino, W. Perlanski, H. Perrey, K. Piotrzkowski, P. Plucinski, N.S. Pokrovskiy, A. Polini, A.S. Proskuryakov, M. Przybycien, A. Raval, D.D. Reeder, B. Reisert, Z. Ren, J. Repond, Y.D. Ri, A. Robertson, P. Roloff, I. Rubinsky, M. Ruspa, R. Sacchi, U. Samson, G. Sartorelli, A.A. Savin, D.H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W.B. Schmidke, U. Schneekloth, V. Schönberg, T. Schörner-Sadeniu, J. Schwartz, F. Sciulli, L.M. Shcheglova, R. Shehzadi, R. Shevchenko, S. Shimizu, O. Shkola, I. Singh, I.O. Skillicorn, W. Slominski, W.H. Smith, V. Sola, A. Solano, D. Son, V. Sosnovtsev, A. Spiridonov, H. Stadie, L. Stanco, N. Stefaniuk, A. Stern, T.P. Stewart, A. Stifutkin, P. Stopa, S. Suchkov, G. Susinno, L. Suszycki, J. Sztuk-Dambietz, D. Szuba, J. Szuba, A.D. Tapper, E. Tassi, J. Terrón, T. Theedt, H. Tiecke, K. Tokushuku, J. Tomaszewska, A. Trofymov, V. Trusov, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, M. Vázquez, A. Verbytskyi, O. Viazlo, N.N. Vlasov, R. Walczak, W.A.T. Wan Abdullah, J.J. Whitmore, K. Wichmann, L. Wigger, M. Wing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, A.G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, N. Zakharchuk, A.F. Żarnecki, L. Zawiejski, O. Zenaiev, W. Zeuner, B.O. Zhautykov, N. Zhmak, A. Zichichi, Z. Zolkapli, D.S. Zotkin, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Antiparticle, Particle physics, Meson, Hadron, Nuclear Theory, Lepton-Nucleon Scattering, HERA, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, lepton-nucleon scattering, charm physics, qcd, Charm quark, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), QCD, Charm physics, High Energy Physics, ZEUS Collaboration, 0103 physical sciences, ddc:530, Rapidity, 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Pseudorapidity, High Energy Physics::Experiment
Abstract: The production of D^0, D^*+, D^+, D_s+ and Lambda_c^+ charm hadrons and their antiparticles in ep scattering at HERA has been studied with the ZEUS detector, using a total integrated luminosity of 372 pb^-1. The fractions of charm quarks hadronising into a particular charm hadron were derived. In addition, the ratio of neutral to charged D-meson production rates, the fraction of charged D mesons produced in a vector state, and the stangeness-suppression factor have been determined. The measurements have been performed in the photoproduction regime. The charm hadrons were reconstructed in the range of transverse momentum p_T >3.8 GeV and pseudorapidity |eta, 27 pages, 6 figures
Published: 2013

49. Measurement of D*± production in deep inelastic scattering at HERA

Author: B. B. Levchenko, J. F. Martin, D. Gladkov, Guenter Wolf, B. Brzozowska, S. Bhadra, F. Dal Corso, Ewelina Lobodzinska, Andrii Gizhko, U. Karshon, U. Schneekloth, D. Boscherini, G. Susinno, M. Wlasenko, Af Zarnecki, E. Hilger, A.G. Robertson, Mariusz Przybycien, M. Corradi, O. Viazlo, Hanno Perrey, Katsuo Tokushuku, S. Fang, J. Ciborowski, Sebastian Mergelmeyer, S. Kitamura, H.-P. Jakob, I. Gialas, E.G. Boos, I. Abt, N. Kondrashova, Elisabetta Gallo, Yu. Onishchuk, F. J. Sciulli, M. Jüngst, Ben Bylsma, D. Szuba, Janusz Chwastowski, Francois Corriveau, V. Monaco, B.Y. Oh, L. Cifarelli, R. Brugnera, Kerstin Borras, T. Namsoo, Takuya Nobe, A. Longhin, A.G. Yagües-Molina, Dong-Chul Son, Manjit Kaur, A. Kotański, W. Hain, A. M. Cooper-Sarkar, G. Hartner, I. M. Gregor, Roman Walczak, A. E. Nuncio-Quiroz, W. A. T. Wan Abdullah, T. Theedt, O. Kononenko, Alexander Tapper, S. De Pasquale, N.S. Pokrovskiy, Zukhaimira Zolkapli, A. Polini, H. Hartmann, Tobias M. Haas, D. Bot, Shoichi Yamada, M. Basile, R.C.E. Devenish, W. H. Smith, G. D'Agostini, P. Stopa, A. Nigro, Masaki Ishitsuka, Y. Ning, Anselmo Margotti, J. Grebenyuk, L.W. Wiggers, T. Schörner-Sadenius, J. Del Peso, K. Olkiewicz, W. B. Schmidke, Mykhailo Lisovyi, Zhongliang Ren, Halina Abramowicz, Allen Caldwell, Zainol Abidin Ibrahim, T. Tymieniecka, T. Y. Ling, O. Gogota, Robert Klanner, Ada Solano, V. Bokhonov, A. Parenti, U. Kötz, B. Löhr, C. Blohm, K. Papageorgiu, A. Eskreys, J. Sztuk-Dambietz, N. Brümmer, F. Mohamad Idris, H. Wolfe, R. Hori, K. Wrona, B. Foster, Hartmut Stadie, Kenneth Long, Yu. A. Golubkov, E. Paul, Fernando Barreiro, Iwona Grabowska-Bold, S. Miglioranzi, A. Raval, Danuta Kisielewska, S. Limentani, A. Antonov, S. Dusini, Michele Arneodo, R. J. Nowak, T. P. Stewart, T. Tsurugai, G. Bari, Marcello Bindi, B. Pawlik, C. Youngman, S.I. Suchkov, A. N. Barakbaev, R. Mankel, Wolfgang Lohmann, Pawel Plucinski, I. Singh, O. Turkot, Janna Katharina Behr, A. Zichichi, J. Maeda, Alexander Spiridonov, I. A. Melzer-Pellmann, W. Perlanski, J. Y. Kim, Pietro Antonioli, Giovanna Bruni, Uta Klein, A. Stern, D. Notz, L. K. Gladilin, R. K. Dementiev, Krzysztof Piotrzkowski, P. Göttlicher, A. Pellegrino, Didar Dobur, M.C.K. Mattingly, L. S. Durkin, M. Vázquez, V. Sosnovtsev, N. Zakharchuk, Ganna Dolinska, J. Repond, B. Kahle, N. Okazaki, Roberto Carlin, J. Malka, D.S. Zotkin, C. D. Catterall, T. W. Jones, Ozan Arslan, R. Hamatsu, Y. Aushev, O. Bachynska, Alessandro Montanari, Philipp Roloff, Marco Schioppa, Els Koffeman, John Morris, Ulf Behrens, P. G. Pelfer, Andrea Contin, Federico Cindolo, H. Kowalski, N. Kovalchuk, Valentina Sola, A. Keramidas, Peter Schleper, V. Aushev, A. Bertolin, Y. Eisenberg, L. Suszycki, O. Yu. Lukina, B. Reisert, V. Trusov, Marcella Capua, L. Zawiejski, K. Wichmann, M. Turcato, N. Coppola, Anna Mastroberardino, Kunihiro Nagano, Y. D. Ri, M. Adamus, G. Marini, N.N. Vlasov, Peter Bussey, S. Magill, P. Kaur, Wolfram Dietrich Zeuner, A. Bamberger, P.F. Ermolov, A. Galas, G. Sartorelli, Jan Figiel, Yuji Yamazaki, A. Stifutkin, Igor Katkov, A. Iudin, J. Tomaszewska, G. Grigorescu, L. M. Shcheglova, James Ferrando, L. Stanco, R. Ingbir, Nazar Stefaniuk, R. Yoshida, Claudia Glasman, V. Drugakov, Lev Khein, S. Kananov, B.O. Zhautykov, Marco Costa, John Hart, Oleg Kuprash, I. Rubinsky, A. Trofymov, J. M. Pawlak, K. Mujkic, A. Garfagnini, U. Samson, Rosario Nania, Giuseppe Barbagli, I. Makarenko, Y. Iga, I. O. Skillicorn, Marcin Pawel Guzik, R. Aggarwal, J. Schwartz, G. Grzelak, M. Kuze, E. Lohrmann, Grzegorz Gach, E. Brownson, A. T. Doyle, Claire Gwenlan, Matthew Wing, B. A. Dolgoshein, W. Slominski, F. Januschek, Orel Gueta, Andrii Verbytskyi, Marta Ruspa, S. Fazio, Roberto Sacchi, Leszek Adamczyk, Aharon Levy, V. Schönberg, Vladyslav Libov, D. Hochman, S. Schlenstedt, O. Zenaiev, Ian Brock, Sergei Chekanov, Dirk-Uwe Bartsch, A. Hüttmann, D. H. Saxon, A. Lee, L. Bellagamba, Tomasz Bold, Denys Lontkovskyi, A. Bruni, Robert Ciesielski, O. Behnke, Nazar Bartosik, Enrico Tassi, J. J. Whitmore, J. Szuba, A.S. Proskuryakov, M. Derrick, P.M. Kooijman, Achim Geiser, Juan Terron, B. Musgrave, S. Antonelli, M.I. Ferrero, F. Karstens, H.G.J.M. Tiecke, I. Kadenko, Shinichi Shimizu, Ie. Korol, I. A. Korzhavina, N. Zhmak, T. Kanno, Alexander Savin, D.D. Reeder, Ramoona Shehzadi, UAM. Departamento de Física Teórica, Zeus (IHEF, IoP, FNWI), H. Abramowicz, I. Abt, L. Adamczyk, M. Adamu, R. Aggarwal, S. Antonelli, P. Antonioli, A. Antonov, M. Arneodo, O. Arslan, V. Aushev, Y. Aushev, O. Bachynska, A. Bamberger, A. N. Barakbaev, G. Barbagli, G. Bari, F. Barreiro, N. Bartosik, D. Bartsch, M. Basile, O. Behnke, J. Behr, U. Behren, L. Bellagamba, A. Bertolin, S. Bhadra, M. Bindi, C. Blohm, V. Bokhonov, T. Bold, E. G. Boo, K. Borra, D. Boscherini, D. Bot, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, A. Bruni, G. Bruni, B. Brzozowska, P. J. Bussey, B. Bylsma, A. Caldwell, M. Capua, R. Carlin, C. D. Catterall, S. Chekanov, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, A. M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, G. D’Agostini, F. Dal Corso, J. Peso, R. K. Dementiev, S. Pasquale, M. Derrick, R. C. E. Devenish, D. Dobur, B. A. Dolgoshein, G. Dolinska, A. T. Doyle, V. Drugakov, L. S. Durkin, S. Dusini, Y. Eisenberg, P. F. Ermolov, A. Eskrey, S. Fang, S. Fazio, J. Ferrando, M. I. Ferrero, J. Figiel, B. Foster, G. Gach, A. Gala, E. Gallo, A. Garfagnini, A. Geiser, I. Giala, A. Gizhko, L. K. Gladilin, D. Gladkov, C. Glasman, O. Gogota, Yu. A. Golubkov, P. Göttlicher, I. Grabowska-Bold, J. Grebenyuk, I. Gregor, G. Grigorescu, G. Grzelak, O. Gueta, M. Guzik, C. Gwenlan, T. Haa, W. Hain, R. Hamatsu, J. C. Hart, H. Hartmann, G. Hartner, E. Hilger, D. Hochman, R. Hori, A. Hüttmann, Z. A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, A. Iudin, H.-P. Jakob, F. Januschek, T. W. Jone, M. Jüngst, I. Kadenko, B. Kahle, S. Kananov, T. Kanno, U. Karshon, F. Karsten, I. I. Katkov, M. Kaur, P. Kaur, A. Keramida, L. A. Khein, J. Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, U. Klein, E. Koffeman, N. Kondrashova, O. Kononenko, P. Kooijman, Ie. Korol, I. A. Korzhavina, A. Kotanski, U. Kötz, N. Kovalchuk, H. Kowalski, O. Kuprash, M. Kuze, A. Lee, B. B. Levchenko, A. Levy, V. Libov, S. Limentani, T. Y. Ling, M. Lisovyi, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, K. R. Long, A. Longhin, D. Lontkovskyi, O. Yu. Lukina, J. Maeda, S. Magill, I. Makarenko, J. Malka, R. Mankel, A. Margotti, G. Marini, J. F. Martin, A. Mastroberardino, M. C. K. Mattingly, I.-A. Melzer-Pellmann, S. Mergelmeyer, S. Miglioranzi, F. Mohamad Idri, V. Monaco, A. Montanari, J. D. Morri, K. Mujkic, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, A. Nigro, Y. Ning, T. Nobe, D. Notz, R. J. Nowak, A. E. Nuncio-Quiroz, B. Y. Oh, N. Okazaki, K. Olkiewicz, Yu. Onishchuk, K. Papageorgiu, A. Parenti, E. Paul, J. M. Pawlak, B. Pawlik, P. G. Pelfer, A. Pellegrino, W. Perlanski, H. Perrey, K. Piotrzkowski, P. Plucinski, N. S. Pokrovskiy, A. Polini, A. S. Proskuryakov, M. Przybycien, A. Raval, D. D. Reeder, B. Reisert, Z. Ren, J. Repond, Y. D. Ri, A. Robertson, P. Roloff, I. Rubinsky, M. Ruspa, R. Sacchi, U. Samson, G. Sartorelli, A. A. Savin, D. H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W. B. Schmidke, U. Schneekloth, V. Schönberg, T. Schörner-Sadeniu, J. Schwartz, F. Sciulli, L. M. Shcheglova, R. Shehzadi, S. Shimizu, I. Singh, I. O. Skillicorn, W. Slominski, W. H. Smith, V. Sola, A. Solano, D. Son, V. Sosnovtsev, A. Spiridonov, H. Stadie, L. Stanco, N. Stefaniuk, A. Stern, T. P. Stewart, A. Stifutkin, P. Stopa, S. Suchkov, G. Susinno, L. Suszycki, J. Sztuk-Dambietz, D. Szuba, J. Szuba, A. D. Tapper, E. Tassi, J. Terrón, T. Theedt, H. Tiecke, K. Tokushuku, J. Tomaszewska, A. Trofymov, V. Trusov, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, M. Vázquez, A. Verbytskyi, O. Viazlo, N. N. Vlasov, R. Walczak, W. A. T. Wan Abdullah, J. J. Whitmore, K. Wichmann, L. Wigger, M. Wing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, A. G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, N. Zakharchuk, A. F. Żarnecki, L. Zawiejski, O. Zenaiev, W. Zeuner, B. O. Zhautykov, N. Zhmak, A. Zichichi, Z. Zolkapli, and D. S. Zotkin
Subjects: Particle physics, Nuclear and High Energy Physics, Meson, Lepton-Nucleon Scattering, Nuclear Theory, HERA, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, 0103 physical sciences, ddc:530, Charm (quantum number), 010306 general physics, Nuclear Experiment, charm physics, Charm physics, Quantum chromodynamics, Physics, Luminosity (scattering theory), ZEUS (particle detector), 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Física, lepton-nucleon scattering, Deep inelastic scattering, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: The production of $D^{*\pm}$ mesons in deep inelastic $ep$ scattering has been measured for exchanged photon virtualities $ 5, Comment: new version with errors fixed in tables 7,9,10 and figures 9,10
Published: 2013

50. Measurement of D ± production in deep inelastic ep scattering with the ZEUS detector at HERA

Author: F. Mohamad Idris, D.D. Reeder, J. Ciborowski, Tobias M. Haas, Ramoona Shehzadi, B. Löhr, Krzysztof Piotrzkowski, K. Wrona, Manjit Kaur, Shoichi Yamada, R.C.E. Devenish, T. Schörner-Sadenius, V. Schönberg, B. Foster, Alexander Spiridonov, S. Dusini, O. Zenaiev, I. A. Melzer-Pellmann, P. Göttlicher, V. Sosnovtsev, Ewelina Lobodzinska, J. Y. Kim, A.G. Robertson, Mariusz Przybycien, M. Corradi, O. Viazlo, R. Yoshida, Fernando Barreiro, A. Eskreys, A. Polini, M. Kuze, E. Lohrmann, M. Ishitsuka, Valentina Sola, L. Suszycki, Marco Schioppa, Pietro Antonioli, U. Schneekloth, Denys Lontkovskyi, Zhongliang Ren, L. K. Gladilin, R. K. Dementiev, Grzegorz Gach, W. Slominski, A. Longhin, Claudia Glasman, V. Drugakov, P. G. Pelfer, S.I. Suchkov, Janna Katharina Behr, F. Dal Corso, A. Bruni, I. Gialas, Nazar Bartosik, S. Kitamura, S. Fazio, Roberto Sacchi, J. M. Pawlak, Lev Khein, M. Basile, J. Sztuk-Dambietz, Didar Dobur, Enrico Tassi, J. J. Whitmore, L. Cifarelli, N. Kondrashova, S. Kananov, M. Vázquez, J. Szuba, Kenneth Long, Aharon Levy, K. Mujkic, A. Garfagnini, Francois Corriveau, A. M. Cooper-Sarkar, Takuya Nobe, D. Hochman, H.G.J.M. Tiecke, A. Kotański, I. Kadenko, M. Derrick, Y. Aushev, G. Bari, A. Nigro, Shinichi Shimizu, Hanno Perrey, Yu. A. Golubkov, E. Paul, Leszek Adamczyk, M. Wlasenko, Af Zarnecki, U. Samson, Elisabetta Gallo, Yu. Onishchuk, J. Maeda, Giovanna Bruni, B. Kahle, W. H. Smith, R. Hori, S. Schlenstedt, Mário Costa, Y. Ning, P. J. Bussey, F. J. Sciulli, Roberto Carlin, Marcin Pawel Guzik, R. Aggarwal, Ganna Dolinska, Alexander Tapper, Ozan Arslan, Rosario Nania, Vladyslav Libov, S. Fang, Sebastian Mergelmeyer, S. Miglioranzi, A. Raval, Danuta Kisielewska, T. P. Stewart, C. Youngman, Pawel Plucinski, Andrii Gizhko, U. Karshon, N. Zhmak, T. Kanno, Alexander Savin, M.I. Ferrero, F. Karstens, Yuji Yamazaki, A. Keramidas, D. Boscherini, Katsuo Tokushuku, Igor Katkov, G. Susinno, Ian Brock, A. Bertolin, J. Schwartz, J. Tomaszewska, O. Turkot, Ada Solano, V. Bokhonov, G. Grzelak, T. Theedt, S. Limentani, N. Zakharchuk, Philipp Roloff, L. Zawiejski, Janusz Chwastowski, Hartmut Stadie, M. Turcato, Claire Gwenlan, F. Januschek, Giuseppe Barbagli, I. Makarenko, A. Hüttmann, Matthew Wing, Kunihiro Nagano, I. Singh, D. H. Saxon, I. Abt, A. Galas, J. Malka, S. Magill, Anna Mastroberardino, Andrea Contin, Uta Klein, P. Kaur, S. Bhadra, I. O. Skillicorn, A. E. Nuncio-Quiroz, W. A. T. Wan Abdullah, A. Trofymov, V. Monaco, A. Stifutkin, T. Namsoo, Ie. Korol, B.O. Zhautykov, D. Bot, W. Hain, John Hart, Oleg Kuprash, I. Rubinsky, Marcella Capua, Sergei Chekanov, Dirk-Uwe Bartsch, K. Olkiewicz, Michele Arneodo, Y. Iga, A. Lee, L. Bellagamba, H. Wolfe, B. B. Levchenko, N.N. Vlasov, W. Perlanski, J. F. Martin, E. Brownson, I. A. Korzhavina, A. T. Doyle, N. Okazaki, D. Gladkov, G. D'Agostini, John Morris, Guenter Wolf, B. Brzozowska, T. Y. Ling, Iwona Grabowska-Bold, O. Gogota, A. Antonov, B. A. Dolgoshein, Orel Gueta, Andrii Verbytskyi, Marta Ruspa, H.-P. Jakob, R. Brugnera, Kerstin Borras, Dong-Chul Son, P. Stopa, O. Kononenko, Robert Klanner, C. Blohm, Jan Figiel, Y. Eisenberg, R. Walczak, A. Iudin, L. M. Shcheglova, G. Grigorescu, M. Lisovyi, Anselmo Margotti, J. Grebenyuk, L.W. Wiggers, Y. D. Ri, G. Sartorelli, L. Stanco, R. Ingbir, Nazar Stefaniuk, Ulf Behrens, Federico Cindolo, H. Kowalski, V. Trusov, N. Brümmer, T. Tsurugai, R. Mankel, Wolfgang Lohmann, O. Yu. Lukina, B. Reisert, Alessandro Montanari, N. Kovalchuk, N. Coppola, A.G. Yagües-Molina, J. Del Peso, W. B. Schmidke, E. Hilger, E.G. Boos, K. Papageorgiu, B.Y. Oh, Marcello Bindi, B. Pawlik, S. De Pasquale, A. N. Barakbaev, N.S. Pokrovskiy, Zukhaimira Zolkapli, Allen Caldwell, A. Stern, Zainol Abidin Ibrahim, T. Tymieniecka, J. Repond, A. Parenti, U. Kötz, R. J. Nowak, A. Pellegrino, M.C.K. Mattingly, L. S. Durkin, R. Hamatsu, O. Bachynska, Els Koffeman, Peter Schleper, V. Aushev, K. Wichmann, M. Adamus, G. Marini, Wolfram Dietrich Zeuner, A. Bamberger, A. Zichichi, D. Notz, D.S. Zotkin, C. D. Catterall, T. W. Jones, M. Jüngst, Ben Bylsma, D. Szuba, G. Hartner, I. M. Gregor, H. Hartmann, Halina Abramowicz, P.F. Ermolov, James Ferrando, P.M. Kooijman, Achim Geiser, Juan Terron, B. Musgrave, S. Antonelli, Tomasz Bold, Robert Ciesielski, O. Behnke, A.S. Proskuryakov, Zeus (IHEF, IoP, FNWI), H. Abramowicz, I. Abt, L. Adamczyk, M. Adamu, R. Aggarwal, S. Antonelli, P. Antonioli, A. Antonov, M. Arneodo, O. Arslan, V. Aushev, Y. Aushev, O. Bachynska, A. Bamberger, A. N. Barakbaev, G. Barbagli, G. Bari, F. Barreiro, N. Bartosik, D. Bartsch, M. Basile, O. Behnke, J. Behr, U. Behren, L. Bellagamba, A. Bertolin, S. Bhadra, M. Bindi, C. Blohm, V. Bokhonov, T. Bold, E. G. Boo, K. Borra, D. Boscherini, D. Bot, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, A. Bruni, G. Bruni, B. Brzozowska, P. J. Bussey, B. Bylsma, A. Caldwell, M. Capua, R. Carlin, C. D. Catterall, S. Chekanov, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, A. M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, G. D’Agostini, F. Dal Corso, J. Peso, R. K. Dementiev, S. Pasquale, M. Derrick, R. C. E. Devenish, D. Dobur, B. A. Dolgoshein, G. Dolinska, A. T. Doyle, V. Drugakov, L. S. Durkin, S. Dusini, Y. Eisenberg, P. F. Ermolov, A. Eskrey, S. Fang, S. Fazio, J. Ferrando, M. I. Ferrero, J. Figiel, B. Foster, G. Gach, A. Gala, E. Gallo, A. Garfagnini, A. Geiser, I. Giala, A. Gizhko, L. K. Gladilin, D. Gladkov, C. Glasman, O. Gogota, Yu. A. Golubkov, P. Göttlicher, I. Grabowska-Bold, J. Grebenyuk, I. Gregor, G. Grigorescu, G. Grzelak, O. Gueta, M. Guzik, C. Gwenlan, T. Haa, W. Hain, R. Hamatsu, J. C. Hart, H. Hartmann, G. Hartner, E. Hilger, D. Hochman, R. Hori, A. Hüttmann, Z. A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, A. Iudin, H.-P. Jakob, F. Januschek, T. W. Jone, M. Jüngst, I. Kadenko, B. Kahle, S. Kananov, T. Kanno, U. Karshon, F. Karsten, I. I. Katkov, M. Kaur, P. Kaur, A. Keramida, L. A. Khein, J. Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, U. Klein, E. Koffeman, N. Kondrashova, O. Kononenko, P. Kooijman, Ie. Korol, I. A. Korzhavina, A. Kotanski, U. Kötz, N. Kovalchuk, H. Kowalski, O. Kuprash, M. Kuze, A. Lee, B. B. Levchenko, A. Levy, V. Libov, S. Limentani, T. Y. Ling, M. Lisovyi, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, K. R. Long, A. Longhin, D. Lontkovskyi, O. Yu. Lukina, J. Maeda, S. Magill, I. Makarenko, J. Malka, R. Mankel, A. Margotti, G. Marini, J. F. Martin, A. Mastroberardino, M. C. K. Mattingly, I.-A. Melzer-Pellmann, S. Mergelmeyer, S. Miglioranzi, F. Mohamad Idri, V. Monaco, A. Montanari, J. D. Morri, K. Mujkic, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, A. Nigro, Y. Ning, T. Nobe, D. Notz, R. J. Nowak, A. E. Nuncio-Quiroz, B. Y. Oh, N. Okazaki, K. Olkiewicz, Yu. Onishchuk, K. Papageorgiu, A. Parenti, E. Paul, J. M. Pawlak, B. Pawlik, P. G. Pelfer, A. Pellegrino, W. Perlanski, H. Perrey, K. Piotrzkowski, P. Plucinski, N. S. Pokrovskiy, A. Polini, A. S. Proskuryakov, M. Przybycien, A. Raval, D. D. Reeder, B. Reisert, Z. Ren, J. Repond, Y. D. Ri, A. Robertson, P. Roloff, I. Rubinsky, M. Ruspa, R. Sacchi, U. Samson, G. Sartorelli, A. A. Savin, D. H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W. B. Schmidke, U. Schneekloth, V. Schönberg, T. Schörner-Sadeniu, J. Schwartz, F. Sciulli, L. M. Shcheglova, R. Shehzadi, S. Shimizu, I. Singh, I. O. Skillicorn, W. Slominski, W. H. Smith, V. Sola, A. Solano, D. Son, V. Sosnovtsev, A. Spiridonov, H. Stadie, L. Stanco, N. Stefaniuk, A. Stern, T. P. Stewart, A. Stifutkin, P. Stopa, S. Suchkov, G. Susinno, L. Suszycki, J. Sztuk-Dambietz, D. Szuba, J. Szuba, A. D. Tapper, E. Tassi, J. Terrón, T. Theedt, H. Tiecke, K. Tokushuku, J. Tomaszewska, A. Trofymov, V. Trusov, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, M. Vázquez, A. Verbytskyi, O. Viazlo, N. N. Vlasov, R. Walczak, W. A. T. Wan Abdullah, J. J. Whitmore, K. Wichmann, L. Wigger, M. Wing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, A. G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, N. Zakharchuk, A. F. Żarnecki, L. Zawiejski, O. Zenaiev, W. Zeuner, B. O. Zhautykov, N. Zhmak, A. Zichichi, Z. Zolkapli, and D. S. Zotkin
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, Meson, Lepton-Nucleon Scattering, HERA, 01 natural sciences, Charm quark, Nuclear physics, High Energy Physics, ZEUS Collaboration, 0103 physical sciences, ddc:530, 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Scattering, heavy quark production, lepton-nucleon scattering, High Energy Physics::Phenomenology, Strangeness production, Pseudorapidity, High Energy Physics::Experiment
Abstract: Charm production in deep inelastic ep scattering was measured with the ZEUS detector using an integrated luminosity of 354 pb−1. Charm quarks were identified by reconstructing D ± mesons in the D ± → K ∓π±π± decay channel. Lifetime information was used to reduce combinatorial background substantially. Differential cross sections were measured in the kinematic region 5 < Q 2 < 1000 GeV2, 0.02 < y < 0.7, 1.5 < p T (D ±) < 15 GeV and |η(D ±)| < 1.6, where Q 2 is the photon virtuality, y is the inelasticity, and p T (D ±) and η(D ±) are the transverse momentum and the pseudorapidity of the D ± meson, respectively. Next-to-leading-order QCD predictions are compared to the data. The charm contribution, $ F_2^{{c\overline{c}}} $ , to the proton structure-function F 2 was extracted.
Published: 2013

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