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Measurement of inelastic, single- and double-diffraction cross sections in proton-proton collisions at the LHC with ALICE
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SYSNO ASEP 0395990 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Measurement of inelastic, single- and double-diffraction cross sections in proton-proton collisions at the LHC with ALICE Author(s) Abelev, B. (US)
Adam, J. (CZ)
Adamová, Dagmar (UJF-V) RID, ORCID, SAI
Bielčík, J. (CZ)
Bielčíková, Jana (UJF-V) RID, ORCID, SAI
Čepila, J. (CZ)
Křelina, M. (CZ)
Krus, M. (CZ)
Kushpil, Svetlana (UJF-V) RID, ORCID, SAI
Kushpil, Vasilij (UJF-V) ORCID, SAI
Mareš, Jiří A. (FZU-D) RID, ORCID
Pachr, M. (CZ)
Petráček, V. (CZ)
Petráň, M. (CZ)
Polák, Karel (FZU-D)
Pospíšil, V. (CZ)
Šmakal, R. (CZ)
Šumbera, Michal (UJF-V) RID, ORCID, SAI
Tlustý, D. (CZ)
Vajzer, Michal (UJF-V) RID
Wagner, V. (CZ)
Zach, Č. (CZ)
Závada, Petr (FZU-D) RID, ORCIDNumber of authors 987 Source Title European Physical Journal C. - : Springer - ISSN 1434-6044
Roč. 73, č. 6 (2013), s. 2456Number of pages 20 s. Publication form Print - P Language eng - English Country US - United States Keywords ALICE ; inelastic cross section Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders Subject RIV - cooperation Institute of Physics - Elementary Particles and High Energy Physics R&D Projects LG13031 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 ; UJF-V - RVO:61389005 UT WOS 000321855400012 DOI 10.1140/epjc/s10052-013-2456-0 Annotation Measurements of cross sections of inelastic and diffractive processes in proton-proton collisions at LHC energies were carried out with the ALICE detector. The fractions of diffractive processes in inelastic collisions were determined from a study of gaps in charged particle pseudorapidity distributions: for single diffraction (diffractive mass M-X < 200 GeV/c(2)) sigma(SD)/sigma(INEL) = 0.21 +/- 0.03, 0.20(-0.08)(+0.07,) and 0.20(-0.07)(+0.04), respectively at centre-of-mass energies root s = 0.9, 2.76, and 7 TeV; for double diffraction (for a pseudorapidity gap Delta eta > 3) sigma(DD)/sigma(INEL) = 0.11 +/- 0.03, 0.12 +/- 0.05, and 0.12(-0.04)(+0.05), respectively at root s = 0.9, 2.76, and 7 TeV. To measure the inelastic cross section, beam properties were determined with van der Meer scans, and, using a simulation of diffraction adjusted to data, the following values were obtained: sigma(INEL) = 62.8(-4.0)(+2.4)(model) +/- 1.2(lumi) mb at root s = 2.76 TeV and 73.2(-4.6)(+2.0)(model) +/- 2.6(lumi) mb at root s = 7 TeV. The single- and double-diffractive cross sections were calculated combining relative rates of diffraction with inelastic cross sections. The results are compared to previous measurements at proton-antiproton and proton-proton colliders at lower energies, to measurements by other experiments at the LHC, and to theoretical models. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2014 Electronic address http://download.springer.com/static/pdf/220/art%253A10.1140%252Fepjc%252Fs10052-013-2456-0.pdf?auth66=1379855437_aeb5460b76c14458cb4c1bb354311e2c&ext=.pdf
Number of the records: 1