@article{3156442, title = "Pseudorapidity Density of Charged Particles in p plus Pb Collisions at root s(NN)=5.02 TeV", author = "Abelev, B. and Adam, J. and Adamova, D. and Adare, A. M. and Aggarwal, and M. M. and Rinella, G. Aglieri and Agnello, M. and Agocs, A. G. and and Agostinelli, A. and Ahammed, Z. and Ahmad, N. and Masoodi, A. Ahmad and and Ahn, S. U. and Ahn, S. A. and Ajaz, M. and Akindinov, A. and and Aleksandrov, D. and Alessandro, B. and Alfaro Molina, R. and Alici, A. and and Alkin, A. and Almaraz Avina, E. and Alme, J. and Alt, T. and Altini, and V. and Altinpinar, S. and Altsybeev, I. and Andrei, C. and Andronic, A. and and Anguelov, V. and Anielski, J. and Anson, C. and Anticic, T. and and Antinori, F. and Antonioli, P. and Aphecetche, L. and Appelshaeuser, H. and and Arbor, N. and Arcelli, S. and Arend, A. and Armesto, N. and Arnaldi, and R. and Aronsson, T. and Arsene, I. C. and Arslandok, M. and Asryan, A. and and Augustinus, A. and Averbeck, R. and Awes, T. 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G. and Yamaguchi, Y. and Yang, S. and Yang, H. and and Yasnopolskiy, S. and Yi, J. and Yin, Z. and Yoo, I-K. and Yoon, J. and and Yu, W. and Yuan, X. and Yushmanov, I. and Zaccolo, V. and Zach, C. and and Zampolli, C. and Zaporozhets, S. and Zarochentsev, A. and Zavada, P. and and Zaviyalov, N. and Zbroszczyk, H. and Zelnicek, P. and Zgura, I. S. and and Zhalov, M. and Zhang, H. and Zhang, X. and Zhou, F. and Zhou, D. and and Zhou, Y. and Zhu, J. and Zhu, H. and Zhu, X. and Zichichi, A. and and Zimmermann, A. and Zinovjev, G. and Zoccarato, Y. and Zynovyev, M. and and Zyzak, M. and ALICE Collaboration", journal = "Physical Review and Physical Review Letters Index", year = "2013", volume = "110", number = "3", publisher = "AMER PHYSICAL SOC", issn = "0094-0003", doi = "10.1103/PhysRevLett.110.032301", abstract = "The charged-particle pseudorapidity density measured over four units of pseudorapidity in nonsingle-diffractive p + Pb collisions at a center-of-mass energy per nucleon pair root s(NN) = 5.02 TeV is presented. The average value at midrapidity is measured to be 16.81 +/- 0.71 (syst), which corresponds to 2.14 +/- 0.17 (syst) per participating nucleon, calculated with the Glauber model. This is 16% lower than in nonsingle-diffractive pp collisions interpolated to the same collision energy and 84% higher than in d + Au collisions at root s(NN) = 0.2 TeV. The measured pseudorapidity density in p + Pb collisions is compared to model predictions and provides new constraints on the description of particle production in high-energy nuclear collisions. DOI: 10.1103/PhysRevLett.110.032301" }