Pseudorapidity distributions of charged particles produced in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mi>p</mml:mi></mml:math>interactions as<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt></mml:mrow><mml:mrow><mml:mrow><mml:mrow />

Abe, F.; Amidei, D.; Apollinari, G.; Ascoli, G.; Ataç, M.; Auchincloss, P.; Baden, A.; Barbaro-Galtieri, A.; Barnes, V. E.; Bedeschi, F.; Belforte, S.; Bellettini, G.; Bellinger, J.; Bensinger, J. R.; Beretvas, A.; Bergé, P.; Bertolucci, S.; Bhadra, S.; Binkley, M.; Blair, R. E.; Blocker, C.; Bofill, J.; Booth, A. W.; Brandenburg, G.; Brown, D. N.; Byon, A.; Byrum, K. L.; Campbell, M.; Carey, Robert M.; Carithers, W.; Carlsmith, D.; Carroll, J. T.; Cashmore, R. J.; Cervelli, F.; Chadwick, K.; Chapin, T. J.; Chiarelli, G.; Chinowsky, W.; Cihangir, S.; Cline, D.; Connor, D.; Contreras, M.; Cooper, J.; Cordelli, M.; Curatolo, M.; Day, C.; Delfabbro, R.; Dell’Orso, M.; Demortier, L.; Devlin, T.; DiBitonto, D.; Diebold, R.; Dittus, F.; Divirgilio, A.; Elias, J. E.; Ely, R.; Errede, S.; Esposito, B.; Flaugher, B.; Focardi, E.; Foster, G. W.; Franklin, M.; Freeman, J.; Frisch, H.; Fukui, Y.; Garfinkel, A. F.; Giannetti, P.; Giokaris, N.; Giromini, P.; Gladney, L.; Gold, M.; Goulianos, K.; Grosso-Pilcher, C.; Haber, C.; Hahn, S. R.; Handler, R.; Harris, R. M.; Hauser, J.; Hessing, T. L.; Hollebeek, R.; Hu, P.; Hubbard, B.; Hurst, P.; Huth, J.; Jensen, H.; Johnson, R. P.; Joshi, U.; Kadel, R. W.; Kamon, T.; Kanda, S.; Kardelis, D. A.; Karliner, I.; Kearns, E.; Kephart, R.; Kesten, P.; Keutelian, H.; Kim, S.; Kirsch, L.; Kondo, K.; Kruse, U.; Kuhlmann, S. E.; Laasanen, A. T.; Li, W.; Liss, T. M.; Lockyer, N. S.; Marchetto, F.; Markeloff, R.; Markosky, L. A.; McIntyre, P.; Menzione, A.; Meyer, T. C.; Mikamo, S.; Miller, Michael L.; Mimashi, T.; Miscetti, S.; Mishina, M.; Miyashita, S.; Mondal, N. K.; Mori, Shigeki; Morita, Y.; Mukherjee, A.; Newman-Holmes, C.; Nodulman, L.; Paoletti, R.; Para, A.; Patrick, J.; Phillips, T. J.; Piekarz, H.; Plunkett, R.; Pondrom, L.; Proudfoot, J.; Punzi, G.; Quarrie, D. R.; Ragan, K.; Redlinger, G.; Rhoades, J.; Rimondi, F.; Ristori, L.; Rohaly, T.; Roodman, A.; Sansoni, A.; Sard, R. D.; Scarpine, V.; Schlabach, P.; Schmidt, E.; Schoessow, P.; Schub, M. H.; Schwitters, R. F.; Scribano, A.; Segler, S.; Sekiguchi, M.; Sestini, P.; Shapiro, M.; Sheaff, M.; Shibata, Masayuki; Shochet, M.; Siegrist, J.; Sinervo, P.; Skarha, J.; Smith, D.; Snider, F. D.; Denis, R. St.; Stefanini, A.; Takaiwa, Y.; Takikawa, K.; Tarem, S.; Theriot, D.; Tollestrup, A.; Tonelli, G.; Tsay, Y.; Ukegawa, F.; Underwood, D. G.; Vidal, R.; Wagner, R. G.; Wagner, R. L.; Walsh, J.; Watts, T.; Webb, R.; Westhusing, T.; White, S.; Wicklund, A. B.; Williams, H. H.; Yamanouchi, T.; Yamashita, A.; Yasuoka, K.; Yeh, G. P.; Yoh, J.; Zetti, F.

doi:10.1103/physrevd.41.2330

Cited by 199 publications

(128 citation statements)

References 33 publications

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“…In addition our result at 158 GeV is also ∼ 20% higher than the fit (dN/dη | max = 2.5 − 0.25 ln s + 0.023 ln 2 s) of the yield obtained by CDF [51] in pp non single diffractive interactions for much higher energies. The isospin effect (∼ 10% among pp, pn and nn interactions [52]) can not account for such a discrepancy as it can be argued also from the fact that our measurement at 158 GeV/nucleon results higher than the one obtained in pp interactions at 200 GeV [53] (dN/dη CM ≈ 1.55 ± 0.04 after conversion from the measured dN/dy).…”

Section: Energy Dependence Of Charged Particle Productionmentioning

confidence: 67%

Scaling of charged particle multiplicity in Pb–Pb collisions at SPS energies

Abreu

Alessandro

Alexa³

et al. 2002

Physics Letters B

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The charged particle multiplicity distribution dN ch /dη has been measured by the NA50 experiment in Pb-Pb collisions at the CERN SPS. Measurements were done at incident energies of 40 and 158 GeV per nucleon over a broad impact parameter range. The multiplicity distributions are studied as a function of centrality using the number of participating nucleons (N part ), or the number of binary nucleon-nucleon collisions (N coll ). Their values at midrapidity exhibit a power law scaling behaviour given by N 1.00 part and N 0.75 coll at 158 GeV. Compatible results are found for the scaling behaviour at 40 GeV. The width of the dN ch /dη distributions is larger at 158 than at 40 GeV/nucleon and decreases slightly with centrality at both energies. Our results are compared to similar studies performed by other experiments both at the CERN SPS and at RHIC.

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Section: Energy Dependence Of Charged Particle Productionmentioning

confidence: 67%

Scaling of charged particle multiplicity in Pb–Pb collisions at SPS energies

Abreu

Alessandro

Alexa³

et al. 2002

Physics Letters B

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“…12 have been averaged over rapidity y from weighing each track by the rapidity range of the spectrometer [102], thus they are for d 2 N/(2πp T dp T dy) instead for d 2 N/(2πp T dp T dη) even though the E735 spectrometer covers the acceptance of −0.36 < η < 1.0. Figure 13 shows the energy dependence of dN ch /dη at η = 0 for pp and pp collisions together with UA5 and CDF data at the Tevatron [99,104]. The AMPT NSD results above √ s = 1 TeV included the CDF NSD trigger by requiring events to each have at least one charged particle in both ends of the pseudorapidity intervals of 3.2 < |η| < 5.9 [104], and the AMPT NSD results below √ s = 1 TeV included the UA5 NSD trigger by requiring events to each have at least one charged particle in both ends of the pseudorapidity intervals of 2 < |η| < 5.6 [99].…”

Section: B Transverse Momentum Spectramentioning

confidence: 99%

“…Figure 13 shows the energy dependence of dN ch /dη at η = 0 for pp and pp collisions together with UA5 and CDF data at the Tevatron [99,104]. The AMPT NSD results above √ s = 1 TeV included the CDF NSD trigger by requiring events to each have at least one charged particle in both ends of the pseudorapidity intervals of 3.2 < |η| < 5.9 [104], and the AMPT NSD results below √ s = 1 TeV included the UA5 NSD trigger by requiring events to each have at least one charged particle in both ends of the pseudorapidity intervals of 2 < |η| < 5.6 [99]. The agreement with the Tevatron data is reasonable.…”

Section: B Transverse Momentum Spectramentioning

confidence: 99%

Multiphase transport model for relativistic heavy ion collisions

et al. 2005

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We describe in detail how the different components of a multiphase transport (AMPT) model that uses the heavy ion jet interaction generator (HIJING) for generating the initial conditions, Zhang's parton cascade (ZPC) for modeling partonic scatterings, the Lund string fragmentation model or a quark coalescence model for hadronization, and a relativistic transport (ART) model for treating hadronic scatterings are improved and combined to give a coherent description of the dynamics of relativistic heavy ion collisions. We also explain the way parameters in the model are determined and discuss the sensitivity of predicted results to physical input in the model. Comparisons of these results to experimental data, mainly from heavy ion collisions at the BNL Relativistic Heavy Ion Collider, are then made in order to extract information on the properties of the hot dense matter formed in these collisions.

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“…In the pp mode, the resulting γ-ray spectrum is broad, reflecting the presence of a quasi-Feynman plateau which spans the entire rapidity space. The photon spectrum will deviate from the proton spectrum if the Feynman plateau is not flat in rapidity space [4], as suggested by Tevatron data [5]. Finally, for both the pγ and pp modes, the decay of the charged pions yield a neutrino counterpart with energy and intensity similar to the photons.…”

Section: Introductionmentioning

confidence: 99%

TeVγrays and neutrinos from photodisintegration of nuclei in Cygnus OB2

et al. 2007

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TeV γ-rays may provide significant information about high energy astrophysical accelerators. Such γ-rays can result from the photo-de-excitation of PeV nuclei after their parents have undergone photo-disintegration in an environment of ultraviolet photons. This process is proposed as a candidate explanation of the recently discovered HEGRA source at the edge of the Cygnus OB2 association. The Lyman-α background is provided by the rich O and B stellar environment. It is found that (1) the HEGRA flux can be obtained if there is efficient acceleration at the source of lower energy nuclei; (2) the requirement that the Lorentz-boosted ultraviolet photons can excite the Giant Dipole Resonance implies a strong suppression of the γ-ray spectrum compared to an E −2 γ behavior at energies 1 TeV (some of these energies will be probed by the upcoming GLAST mission); (3) a TeV neutrino counterpart from neutron decay following helium photo-disintegration will be observed at IceCube only if a major proportion of the kinetic energy budget of the Cygnus OB2 association is expended in accelerating nuclei.

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Pseudorapidity distributions of charged particles produced inp¯pinteractions ass

Cited by 199 publications

References 33 publications

Scaling of charged particle multiplicity in Pb–Pb collisions at SPS energies

Scaling of charged particle multiplicity in Pb–Pb collisions at SPS energies

Multiphase transport model for relativistic heavy ion collisions

TeVγrays and neutrinos from photodisintegration of nuclei in Cygnus OB2

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