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arXiv 0904.2708hep-ex
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在158 GeV/c束流动量下p+p碰撞中质子、反质子和中子的包容产生

Inclusive production of protons, anti-protons and neutrons in p+p collisions at 158 GeV/c beam momentum

NA49 Collaboration, T. Anticic, B. Baatar, J. Bartke, L. Betev, H. Białkowska, C. Blume, B. Boimska, J. Bracinik, V. Cerny, O. Chvala, J. Dolejsi, V. Eckardt, H… 展开作者

NA49 Collaboration, T. Anticic, B. Baatar, J. Bartke, L. Betev, H. Białkowska, C. Blume, B. Boimska, J. Bracinik, V. Cerny, O. Chvala, J. Dolejsi, V. Eckardt, H. G. Fischer, Z. Fodor, P. Foka, V. Friese, M. Gaździcki, C. Höhne, K. Kadija, A. Karev, V. Kolesnikov, M. Kowalski, M. Kreps, M. Makariev, A. Malakhov, M. Mateev, G. Melkumov, M. Mitrovski, S. Mrówczyński, R. Renfordt, M. Rybczyński, A. Rybicki, A. Sandoval, N. Schmitz, P. Seyboth, G. Stefanek, R. Stock, H. Ströbele, T. Susa, P. Szymanski, V. Trubnikov, D. Varga, G. Vesztergombi, D. Vranić, S. Wenig, Z. Włodarczyk, A. Wojtaszek

摘要:

提供了有关p+p相互作用中质子、反质子和中子产生的新数据。这些数据来自CERN SPS的NA 49探测器在158 GeV/c束动量下获得的480万个非弹性事件的样本。在一个大型TPC跟踪系统中,用能量损失测量方法鉴别了带电重子。在前向强子量能器中探测中子。在横动量0 ~ 1.9 GeV/c(0 ~ 1.5 GeV/c)和Feynman x =-0.05 ~0.95(-0.05 ~0.4)范围内,分别得到了质子(反质子)的包容不变截面.给出了费曼x射线在0.1 ~ 0.9范围内的pT积分中子截面。的数据进行了比较,在SPS和ISR的能量范围内,以及从HERA和RHIC的质子和中子测量的现有结果的广泛样本。

英文摘要:

New data on the production of protons, anti-protons and neutrons in p+p interactions are presented. The data come from a sample of 4.8 million inelastic events obtained with the NA49 detector at the CERN SPS at 158 GeV/c beam momentum. The charged baryons are identified by energy loss measurement in a large TPC tracking system. Neutrons are detected in a forward hadronic calorimeter. Inclusive invariant cross sections are obtained in intervals from 0 to 1.9 GeV/c (0 to 1.5 GeV/c) in transverse momentum and from -0.05 to 0.95 (-0.05 to 0.4) in Feynman x for protons (anti-protons), respectively. pT integrated neutron cross sections are given in the interval from 0.1 to 0.9 in Feynman x. The data are compared to a wide sample of existing results in the SPS and ISR energy ranges as well as to proton and neutron measurements from HERA and RHIC.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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