27 results on '"Scheetz, R.A."'
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2. The STAR cluster-finder ASIC
- Author
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Botlo, M., LeVine, M.J., Scheetz, R.A., Schulz, M.W., Short, P., Woods, J., and Crosetto, D.
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Application-specific integrated circuits -- Research ,Collisions (Nuclear physics) -- Research ,Gate arrays -- Research ,Real-time systems -- Research ,Business ,Electronics ,Electronics and electrical industries - Abstract
The STAR experiment [1] reads out a TPC (Time Projection Chamber) and an SVT (Silicon Vertex Tracker), both of which require on-line pedestal subtraction, compression of ADC values from 10-bit to 8-bit, and location of time sequences representing responses to charged-particle tracks. The STAR cluster finder ASIC responds to all of these needs. Pedestal subtraction and compression are performed using lookup tables in attached RAM. We describe the design and implementation of the ASIC, as well as testing methodology and results of tests performed on foundry prototypes.
- Published
- 1998
3. Strangeness production in $\sqrt{s_{NN}} = 200$ GeV Au+Au collisions at RHIC
- Author
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Bøggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhøje, J.J., Germinario, M., Hagel, K., Hansen, O., Holm, A., Ito, H., Jipa, A., Jundt, F., Jørdre, J.I., Jørgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Løvhøiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Norris, J., Ouerdane, D., Płaneta, R., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Samset, B. H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbæk, F., Wada, R., Yin, Z., and Zgura, I.S.
- Published
- 2004
- Full Text
- View/download PDF
4. High pT results for Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV
- Author
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Bøggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhøje, J.J., Germinario, M., Hagel, K., Hansen, O., Holm, A., Ito, H., Jipa, A., Jundt, F., Jørdre, J.I., Jørgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Løvhøiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Norris, J., Ouerdane, D., Płaneta, R., Rami, F., Staszel, P., Ristea, C., Ristea, O., Röhrich, D., Samset, B. H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Tveter, T.S., Videbæk, F., Wada, R., Yin, Z., and Zgura, I.S.
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- 2004
- Full Text
- View/download PDF
5. Results from the STAR TPC system test
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Betts, W., Bieser, F., Bossingham, R., Botlo, M., Cherney, M., Chrin, J., Colarco, P., Crawford, H., Dao, K., Diaz, H., Greiner, D.E., Greiner, L., Hjort, E.L., Jacobson, S., Jared, R.C., Judd, E., Klein, S.R., Lebedev, A.N., LeVine, M.J., Lindenstruth, V., Lisa, M.A., Marks, K., McParland, C., McShane, T.S., Meier, J., Nguyen, M.T., Olson, D.L., Sakrejda, I., Schambach, J., Scheetz, R.A., Stone, N.T.B., Tull, C.E., Visser, G., Vu, C., Wieman, H., and Yee, E.
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United States. Brookhaven National Laboratory -- Equipment and supplies ,Semiconductor nuclear counters -- Design and construction ,Nuclear track detectors -- Design and construction ,Ion accelerators -- Equipment and supplies ,Business ,Electronics ,Electronics and electrical industries - Abstract
A system test of various components of the Solenoidal Tracker at RHIC (STAR) detector, operating in concert, has recently come on-line. Communication between a major sub-detector, a sector of the Time Projection Chamber (TPC), and the trigger, data acquisition and slow controls systems has been established, enabling data from cosmic ray muons to be collected. First results from an analysis of the TPC data are presented. These include measurements of system noise, electronic parameters such as amplifier gains and pedestal values, and tracking resolution for cosmic ray muons and laser induced ionization tracks. A discussion on the experience gained in integrating the different components for the system test is also given.
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- 1997
6. The new physics at RHIC. From transparency to high p t suppression
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Gaardhøje, J.J., Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Bøggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Germinario, M., Hagel, K., Hansen, O., Holm, A., Ito, H., Jipa, A., Jundt, F., Jørdre, J.I., Jørgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Løvhøiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Norris, J., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Ristea, O., Ro¨hrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videb˦k, F., Wada, R., Yin, Z., and Zgura, I.S.
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- 2004
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7. Data acquisition system for Experiment E866 at the Brookhaven AGS
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Ashktorab, K., Le Vine, M.J., and Scheetz, R.A.
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Information storage and retrieval systems -- Design and construction ,Spectrometer -- Usage ,Nuclear research -- Information management ,Business ,Electronics ,Electronics and electrical industries - Abstract
Experiment E866 consists of two spectrometers and related detectors for investigations of collisions of relativistic beams of Au ions with fixed targets at the Brookhaven AGS. The data acquisition system, consisting of 11 CPUs in a single VME crate, gathers data from 8 CAMAC crates and 6 FAST-BUS crates.
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- 1994
8. The BRAHMS experiment at RHIC
- Author
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Adamczyk, M, Antvorskov, L, Ashktorab, K, Asselta, K, Baker, E, Bearden, I.G, Beavis, D, Besliu, C, Blyakhman, Y, Brzychczyk, J, Budick, B, Bøggild, H, Chasman, C, Christensen, C.H, Christiansen, P, Cibor, J, Debbe, R, Diaz, H, Dutka, L, Engelhardt, J, Gaardhøje, J.J, Grotowski, K, Hagel, K, Hammond, J, Hansen, J.C, Hansen, O, Holm, A, Holme, A.K, Ito, H, Jakobsen, E, Jipa, A, Jørdre, J.I, Jundt, F, Jørgensen, C.E, Justice, M, Kajetanowicz, M, Keutgen, T, Kim, E.J, Kotula, E, Kozik, T, Larsen, T.M, Lindegaard, N, Lee, J.H, Lee, Y.K, Løvhøiden, G, Majka, Z, Makeev, A, McBreen, E, Murray, M, Natowitz, J, Nielsen, B.S, Olchanski, K, Olness, J, Olsen, E.K, Ouerdane, D, Pearson, C, Pena, K, Phillips, D, Płaneta, R, Rami, F, Rasmussen, O.B, Röhrich, D, Samset, B.H, Sanders, S.J, Scheetz, R.A, Sørensen, J, Sosin, Z, Staszel, P, Thorsteinsen, T.F, Tveter, T.S, Videbæk, F, Wada, R, Westergaard, J, Wieloch, A, and Zgura, I.S
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- 2003
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9. Forward and midrapidity like-particle ratios from p+p collisions at s=200 GeV
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Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Bøggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhøje, J.J., Germinario, M., Hagel, K., Holm, A., Holme, A.K., Ito, H., Jakobsen, E., Jipa, A., Jundt, F., Jørdre, J.I., Jørgensen, C.E., Karabowicz, R., Keutgen, T., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Løvhøiden, G., Majka, Z., Makeev, A., Mikelsen, M., Murray, M.J., Natowitz, J., Nielsen, B.S., Norris, J., Olchanski, K., Ouerdane, D., Płaneta, R., Rami, F., Ristea, C., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbæk, F., Wada, R., Wieloch, A., Yin, Z., and Zgura, I.S.
- Subjects
Nuclear and High Energy Physics - Published
- 2005
- Full Text
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10. Production of Mesons and Baryons at High Rapidity and High pT in Proton-Proton Collisions at $\sqrt(s)$=200 GeV
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Arsene, I., Bearden, I.G., Beavis, D., Bekele, S., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Dalsgaard, H.H., Debbe, R., Gaardhoje, J.J., Hagel, K., Ito, H., Jipa, A., Johnson, E.B., Jorgensen, C.E., Karabowicz, R., Katrynska, N., Kim, E.J., Larsen, T.M., Lee, J.H., Lindal, S., Lovhoiden, G., Majka, Z., Murray, M., Natowitz, J., Nielsen, B.S., Nygaard, C., Planeta, R., Rami, F., Renault, F., Ristea, C., Ristea, O., Rohrich, D., Samset, B.H., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Yang, H., Zgura, I.S., Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
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High Energy Physics - Experiment (hep-ex) ,FRAGMENTATION FUNCTIONS ,Nuclear Theory ,QUARK ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,FOS: Physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment ,13.85.Ni, 13.85.Hd, 13.87.Fh, 25.75.Dw ,High Energy Physics - Experiment ,CROSS-SECTIONS - Abstract
We present particle spectra for charged hadrons $\pi^\pm, K^\pm, p$ and $\bar{p}$ from pp collisions at $\sqrt{s}=200$ GeV measured for the first time at forward rapidities (2.95 and 3.3). The kinematics of these measurements are skewed in a way that probes the small momentum fraction in one of the protons and large fractions in the other. Large proton to pion ratios are observed at values of transverse momentum that extend up to 4 GeV/c, where protons have momenta up to 35 GeV. Next-to-leading order perturbative QCD calculations describe the production of pions and kaons well at these rapidities, but fail to account for the large proton yields and small $\bar{p}/p$ ratios., Comment: Accepted for publication in PRL. Minor changes in text, added two references, updated table 1
- Published
- 2007
11. Centrality dependent particle production at y=0 and y $\sim$ 1 in Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Lovhoiden, H., Mjka, Z., Makeev, A., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S, Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
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rapidity ,spectra ,flow ,25.75.Dw ,Nuclear Theory ,FOS: Physical sciences ,High Energy Physics::Experiment ,centrality ,Nuclear Experiment (nucl-ex) ,transverse momentum ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Nuclear Experiment - Abstract
Particle production of identified charged hadrons, $\pi^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ in Au+Au collisions at $\sqrt(snn) =$ 200 GeV has been studied as a function of transverse momentum and collision centrality at $y=0$ and $y\sim1$ by the BRAHMS experiment at RHIC. Significant collective transverse flow at kinetic freeze-out has been observed in the collisions. The magnitude of the flow rises with the collision centrality. Proton and kaon yields relative to the pion production increase strongly as the transverse momentum increases and also increase with centrality. Particle yields per participant nucleon show a weak dependence on the centrality for all particle species. Hadron production remains relatively constant within one unit around midrapidity in Au+Au collisions at $\sqrt(snn) =$ 200 GeV., Comment: 52 authors, 8 pages, 12 Figures, 3 Tables, submitted to PRC
- Published
- 2005
12. Centrality dependence of charged particle pseudorapidity distributions from d+Au collisions at $\sqrt{s_{NN}}$=200 GeV
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Hansen, O., Holm, A., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Lovhoiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Norris, J., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
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FOS: Physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment (nucl-ex) ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Nuclear Experiment - Abstract
Charged-particle pseudorapidity densities are presented for the d+Au reaction at sqrt{s_{NN}}=200 GeV with -4.2, 4 pages, 3figures; expanded discussion of uncertainties; added 60-80% centrality range; added additional discussion on centrality selection bias
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- 2005
13. Scanning the phases of QCD with BRAHMS
- Author
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Lovhoiden, G., Majka, Z., Makeev, A., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
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Physics ,Quantum chromodynamics ,Nuclear and High Energy Physics ,Range (particle radiation) ,High Energy Physics::Lattice ,Hadron ,High Energy Physics::Phenomenology ,Nuclear Theory ,FOS: Physical sciences ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Color-glass condensate ,Nuclear physics ,Quark–gluon plasma ,Heavy ion ,High Energy Physics::Experiment ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
BRAHMS has the ability to study relativistic heavy ion collisions from the final freeze-out of hadrons all the way back to the initial wave-function of the gold nuclei. This is accomplished by studying hadrons with a very wide range of momenta and angles. In doing so we can scan various phases of QCD, from a hadron gas, to a quark gluon plasma and perhaps to a color glass condensate., 8 pages, 6 figures, proceedings of plenary talk at Quark Matter 2004 conference
- Published
- 2004
14. The rapidity and centrality dependence of nuclear modification factors at RHIC - what does bulk particle production tell us about the nuclear medium ?
- Author
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Arsene, I., Bearden, G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Kim, E.J., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lovhoiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Norris, J., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Ristea, O., Rohrich, D., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
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FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Nuclear Experiment - Abstract
The BRAHMS experiment at RHIC has measured the production of charged hadrons as a function of pseudorapidity and transverse momentum in Au+Au, d+Au and p+p collisions at a common energy of sqrt(s_NN)=200GeV, and from these spectra we construct the nuclear modification factors for both ``hot'' and ``cold'' nuclear matter. In this contribution I will show how these factors evolve with pseudorapidity and collision centrality. We see a Cronin-like enhancement in d+Au collisions at midrapidity, going to a strong suppression at eta >= 2. In central Au+Au collisions we find a suppression both at mid- and forward rapidities that vanishes for peripheral collisions. We interpret this as signs of several different medium related effects modifying bulk particle production in Au+Au and d+Au collisions at RHIC energies., 6 pages, 6 figures, prepared for the proceedings of the XLII International Winter Meeting on Nuclear Physics, Bormio, 2004
- Published
- 2004
15. High $p_T$ charged pion and proton production in $\sqrt{s_{NN}}$ = 200 GeV Au+Au and d+Au collisions
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Lovhoiden, G., Majka, Z., Makeev, A., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
- Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] - Published
- 2004
16. Rapidity dependence of charged hadron production in central Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV with BRAHMS
- Author
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Lovhoiden, G., Majka, Z., Makeev, A., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
- Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] - Published
- 2004
17. Forward and midrapidity like-particle ratios from p+p collisions at sqrt(s)=200 GeV
- Author
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Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Chrisitansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Holm, A., Holme, A.K., Ito, H., Jacobsen, E., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Keutgen, T., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lovhoiden, G., Majka, Z., Makeev, A., Mikelsen, M., Murray, M.J., Natowitz, J., Nielsen, B.S., Norris, J., Olchanski, K., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Wieloch, A., Yin, Z., Zgura, I.S., Collaboration, Brahms, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
- Subjects
baryon junctions ,limiting fragmentation ,forward rapidity ,FOS: Physical sciences ,proton collisions ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment ,25.75.q, 25.40.-h, 13.75.-n ,particle ratios - Abstract
We present a measurement of pi-\pi+, K-/K+ and pbar/p from p+p collisions at sqrt(s) = 20 0GeV over the rapidity range 0 2.0. The pbar/p ratio is very similar for p+p and 20% central Au+Au collisions at all rapidities. In the fragmentation region the three ratios seem to be independent of beam energy when viewed from the rest frame of one of the protons. Theoretical models based on quark-diquark breaking mechanisms overestimate the pbar/p ratio up to y ~< 3. Including additional mechanisms for baryon number transport such as baryon junctions leads to a better description of the data., Comment: 15 pages, 4 figures, uses elsart.sty. Changes to references and discussion based on referee comments, resubmitted to Phys. Lett. B
- Published
- 2004
- Full Text
- View/download PDF
18. Nuclear stopping in Au+Au collisions at $\sqrt{S_{NN}} = 200$ GeV
- Author
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Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Hansen, O., Holm, A., Holme, A.K., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lovhoiden, G., Majka, Z., Makeev, A., Mikelsen, M., Murray, M., Natowitz, J., Nielsen, B.S., Norris, J., Olchanski, K., Ouerdane, D., Paneta, R., Rami, F., Ristea, C., Rohrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
- Subjects
[PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ,[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] - Published
- 2004
19. Evolution of nuclear modification factors with rapidity and centrality in d+Au collisions at $\sqrt{N^SN}$ = 200 GeV
- Author
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, R., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Lovhoiden, G., Majka, Z., Makeev, A., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
- Subjects
25.75.Dw, 13.85.Hd, 24.85.+p ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] - Published
- 2004
20. The new physics at RHIC. From transparency to high p$_t$ suppression
- Author
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Gaardhoje, J.J., Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Cibor, J., Debbe, R., Enger, E., Germinario, M., Hagel, K., Hansen, O., Holm, A., Ito, H., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindal, S., Lystad, R., Lovhoiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Norris, J., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Riestea, O., Roehrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
- Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] - Published
- 2003
21. Rapidity Dependence of charged particle yields for Au + Au at $\sqrt{s_{NN}}$ = 200 GeV
- Author
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Bearden, I.G., Beavis, D., Besliu, C., Blyakhman, Y., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Hansen, O., Holm, A., Holme, A.K., Ito, H., Jakobsen, E., Jipa, A., Jundt, F., Jordre, J.I.Jorgensen C.E., Karabowicz, R., Keutgen, T., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lovhoiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Nielsen, B.S., Norris, J., Olchanski, K., Olness, J., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Roehrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Wieloch, A., Yin, Z., Zgura, I.S., Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
- Published
- 2003
22. Transverse Momentum Spectra in Au+Au and d+Au Collisions at $\sqrt{s_{NN}}$ = 200 GeV and the Pseudorapidity Dependence of High-$p_{T}$ Suppression
- Author
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Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Bxggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhxje, J.J., Germinario, M., Hagel, K., Hansen, O., Holm, A., Ito, H., Jipa, A., Jundt, F., Jxrdre, J.I., Jxrgensen, C.E., Karabowicz, R., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lystad, G., Lxvhxiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Neumann, B., Nielsen, B.S., Norris, J., Ouerdane, D., Paneta, R., Rami, F., Ristea, C., Ristea, O., Rvhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbfk, F., Wada, R., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and BRAHMS
- Subjects
[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] - Published
- 2003
23. Rapidity dependent net-proton yields in Au + Au at $\sqrt{s_{NN}}$ = 200 GeV
- Author
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Lee, J.H., Bearden, I.G., Beavis, D., Besliu, C., Blyakhman, Y., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Hansen, O., Holm, A., Holme, A.K., Ito, H., Jakobsen, E., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Keutgen, T., Kim, E.J., Kozik, T., Larsen, T.M., Lee, Y.K., Lovhoiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Nielsen, B.S., Norris, J., Olchanski, K., Olness, J., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Roehrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Wieloch, A., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), BRAHMS, and Heyd, Yvette
- Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex] ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] - Published
- 2002
24. From y=0 to y=3: Recent results from BRAHMS
- Author
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Zavada, P., Beavis, D., Besliu, C., Blyakhman, Y., Budick, B., Boggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhoje, J.J., Germinario, M., Hagel, K., Hansen, O., Holm, A., Holme, A.K., Ito, H., Jakobsen, E., Jipa, A., Jundt, F., Jordre, J.I., Jorgensen, C.E., Karabowicz, R., Keutgen, T., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Lovhoiden, G., Majka, Z., Makeev, A., McBreen, B., Mikelsen, M., Murray, M., Natowitz, J., Nielsen, B.S., Norris, J., Olchanski, K., Olness, J., Ouerdane, D., Planeta, R., Rami, F., Ristea, C., Roehrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbaek, F., Wada, R., Wieloch, A., Yin, Z., Zgura, I.S., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), BRAHMS, and Heyd, Yvette
- Subjects
[PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ,[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] - Published
- 2002
25. The new physics at RHIC. From transparency to high pt suppression
- Author
-
Gaardhøje, J.J., primary, Arsene, I., additional, Bearden, I.G., additional, Beavis, D., additional, Besliu, C., additional, Budick, B., additional, Bøggild, H., additional, Chasman, C., additional, Christensen, C.H., additional, Christiansen, P., additional, Cibor, J., additional, Debbe, R., additional, Enger, E., additional, Gaardhøje, J.J., additional, Germinario, M., additional, Hagel, K., additional, Hansen, O., additional, Holm, A., additional, Ito, H., additional, Jipa, A., additional, Jundt, F., additional, Jørdre, J.I., additional, Jørgensen, C.E., additional, Karabowicz, R., additional, Kim, E.J., additional, Kozik, T., additional, Larsen, T.M., additional, Lee, J.H., additional, Lee, Y.K., additional, Lindal, S., additional, Lystad, R., additional, Løvhøiden, G., additional, Majka, Z., additional, Makeev, A., additional, McBreen, B., additional, Mikelsen, M., additional, Murray, M., additional, Natowitz, J., additional, Neumann, B., additional, Nielsen, B.S., additional, Norris, J., additional, Ouerdane, D., additional, Planeta, R., additional, Rami, F., additional, Ristea, C., additional, Ristea, O., additional, Ro¨hrich, D., additional, Samset, B.H., additional, Sandberg, D., additional, Sanders, S.J., additional, Scheetz, R.A., additional, Staszel, P., additional, Tveter, T.S., additional, Videb˦k, F., additional, Wada, R., additional, Yin, Z., additional, and Zgura, I.S., additional
- Published
- 2004
- Full Text
- View/download PDF
26. Forward and midrapidity like-particle ratios from p+p collisions at s=200 GeV
- Author
-
Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Bøggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhøje, J.J., Germinario, M., Hagel, K., Holm, A., Holme, A.K., Ito, H., Jakobsen, E., Jipa, A., Jundt, F., Jørdre, J.I., Jørgensen, C.E., Karabowicz, R., Keutgen, T., Kim, E.J., Kozik, T., Larsen, T.M., Lee, J.H., Lee, Y.K., Løvhøiden, G., Majka, Z., Makeev, A., Mikelsen, M., Murray, M.J., Natowitz, J., Nielsen, B.S., Norris, J., Olchanski, K., Ouerdane, D., Płaneta, R., Rami, F., Ristea, C., Röhrich, D., Samset, B.H., Sandberg, D., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbæk, F., Wada, R., Wieloch, A., Yin, Z., and Zgura, I.S.
- Subjects
Particle ratios ,Forward rapidity ,Limiting fragmentation ,Baryon junctions ,Proton collisions - Abstract
We present a measurement of π−/π+, K−/K+ and p¯/p from p+p collisions at s=200 GeV over the rapidity range 02.0. The p¯/p ratio is very similar for p+p and 20% central Au+Au collisions at all rapidities. In the fragmentation region the three ratios seem to be independent of beam energy when viewed from the rest frame of one of the protons. Theoretical models based on quark–diquark breaking mechanisms overestimate the p¯/p ratio up to y≲3. Including additional mechanisms for baryon number transport such as baryon junctions leads to a better description of the data.
- Full Text
- View/download PDF
27. BRAHMS Collaboration
- Author
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Arsene, I., Bearden, I.G., Beavis, D., Bekele, S., Besliu, C., Budick, B., Bøggild, H., Chasman, C., Christensen, C.H., Christiansen, P., Debbe, R., Gaardhøje, J.J., Hagel, K., Ito, H., Jipa, A., Johnson, E.B., Jundt, F., Jørdre, J.I., Jørgensen, C.E., Karabowicz, R., Kim, E.J., Larsen, T.M., Lee, J.H., Lee, Y.K., Lindahl, S., Løvhøiden, G., Majka, Z., Murray, M.J., Natowitz, J., Nielsen, B.S., Ouerdane, D., Płaneta, R., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Samset, B.H., Sanders, S.J., Scheetz, R.A., Staszel, P., Tveter, T.S., Videbæk, F., Wada, R., Yang, H., Yin, Z., and Zgura, I.S.
- Published
- 2006
- Full Text
- View/download PDF
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