Midrapidity Antiproton-to-Proton Ratio in pp Collisons root s=0.9 and 7 TeV Measured by the ALICE Experiment
(2010) In Physical Review Letters 105(7).- Abstract
- The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at root s = 0.9 and 7 TeV during the initial running periods of the Large Hadron Collider. The measurement covers the transverse momentum interval 0.45 < p(t) < 1.05 GeV/c and rapidity vertical bar y vertical bar < 0.5. The ratio is measured to be R-vertical bar y vertical bar<0.5 = 0.957 +/- 0.006(stat) +/- 0.0014(syst) at 0.9 Tev and R-vertical bar y vertical bar<0.5 = 0.991 +/- 0.005 +/- 0.014(syst) at 7 TeV and it is independent of both rapidity and transverse momentum. The results are consistent with the conventional model of baryon-number transport and set stringent limits on any additional contributions to... (More)
- The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at root s = 0.9 and 7 TeV during the initial running periods of the Large Hadron Collider. The measurement covers the transverse momentum interval 0.45 < p(t) < 1.05 GeV/c and rapidity vertical bar y vertical bar < 0.5. The ratio is measured to be R-vertical bar y vertical bar<0.5 = 0.957 +/- 0.006(stat) +/- 0.0014(syst) at 0.9 Tev and R-vertical bar y vertical bar<0.5 = 0.991 +/- 0.005 +/- 0.014(syst) at 7 TeV and it is independent of both rapidity and transverse momentum. The results are consistent with the conventional model of baryon-number transport and set stringent limits on any additional contributions to baryon-number transfer over very large rapidity intervals in pp collisions. (Less)
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- author
- organization
- publishing date
- 2010
- type
- Contribution to journal
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- published
- subject
- in
- Physical Review Letters
- volume
- 105
- issue
- 7
- article number
- 072002
- publisher
- American Physical Society
- external identifiers
-
- wos:000280850600005
- scopus:77955626838
- pmid:20868032
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.105.072002
- language
- English
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- yes
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- d72e351b-0aa4-4234-805d-2e5c444f45ec (old id 1674164)
- date added to LUP
- 2016-04-01 09:51:00
- date last changed
- 2023-01-01 22:42:43
@article{d72e351b-0aa4-4234-805d-2e5c444f45ec, abstract = {{The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at root s = 0.9 and 7 TeV during the initial running periods of the Large Hadron Collider. The measurement covers the transverse momentum interval 0.45 < p(t) < 1.05 GeV/c and rapidity vertical bar y vertical bar < 0.5. The ratio is measured to be R-vertical bar y vertical bar<0.5 = 0.957 +/- 0.006(stat) +/- 0.0014(syst) at 0.9 Tev and R-vertical bar y vertical bar<0.5 = 0.991 +/- 0.005 +/- 0.014(syst) at 7 TeV and it is independent of both rapidity and transverse momentum. The results are consistent with the conventional model of baryon-number transport and set stringent limits on any additional contributions to baryon-number transfer over very large rapidity intervals in pp collisions.}}, author = {{Aamodt, K. and Abel, N. and Abeysekara, U. and Quintana, A. Abrahantes and Abramyan, A. and Adamova, D. and Aggarwal, M. M. and Rinella, G. Aglieri and Agocs, A. G. and Salazar, S. Aguilar and Ahammed, Z. and Ahmad, A. and Ahmad, N. and Ahn, S. U. and Akimoto, R. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and Alfaro Molina, R. and Alici, A. and Almaraz Avina, E. and Alme, J. and Alt, T. and Altini, V. and Altinpinar, S. and Andrei, C. and Andronic, A. and Anelli, G. and Angelov, V. and Anson, C. and Anticic, T. and Antinori, F. and Antinori, S. and Antipin, K. and Antonczyk, D. and Antonioli, P. and Anzo, A. and Aphecetche, L. and Appelshaeuser, H. and Arcelli, S. and Arceo, R. and Arend, A. and Armesto, N. and Arnaldi, R. and Aronsson, T. and Arsene, I. C. and Asryan, A. and Augustinus, A. and Averbeck, R. and Awes, T. C. and Aysto, J. and Azmi, M. D. and Andronic, A. and Bablok, S. and Bach, M. and Badala, A. and Baek, Y. 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S. and Willis, N. and Windelband, B. and Xu, C. and Yang, C. and Yang, H. and Yasnopolskiy, S. and Yermia, F. and Yi, J. and Yin, Z. and Yokoyama, H. and Yoo, I-K. and Yuan, X. and Yurevich, V. and Yushmanov, I. and Zabrodin, E. and Zagreev, B. and Zalite, A. and Zampolli, C. and Zanevsky, Yu. and Zaporozhets, S. and Zarochentsev, A. and Zavada, P. and Zbroszczyk, H. and Zelnicek, P. and Zenin, A. and Zepeda, A. and Zgura, I. and Zhalov, M. and Zhang, X. and Zhou, D. and Zhou, S. and Zhu, J. and Zichichi, A. and Zinchenko, A. and Zinovjev, G. and Zoccarato, Y. and Zychacek, V. and Zynovyev, M.}}, issn = {{1079-7114}}, language = {{eng}}, number = {{7}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Midrapidity Antiproton-to-Proton Ratio in pp Collisons root s=0.9 and 7 TeV Measured by the ALICE Experiment}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.105.072002}}, doi = {{10.1103/PhysRevLett.105.072002}}, volume = {{105}}, year = {{2010}}, }