Multi-strange baryon production in pp collisions at √s = 7 TeV with ALICE

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dc.contributor.authorAbelev, B
dc.contributor.authorAdam, J
dc.contributor.authorAdamová, D
dc.contributor.authorAdare, A M
dc.contributor.authorAggarwal, M M
dc.contributor.authorAglieri Rinella, G
dc.contributor.authorAgocs, A G
dc.contributor.authorAgostinelli, A
dc.contributor.authorAguilar Salazar, S
dc.contributor.authorAhammed, Z
dc.contributor.authorAhmad, N
dc.contributor.authorAhmad Masoodi, A
dc.contributor.authorAhn, S U
dc.contributor.authorAkindinov, A
dc.contributor.authorAleksandrov, D
dc.contributor.authorAlessandro, B
dc.contributor.authorAlfaro Molina, R
dc.contributor.authorAlici, A
dc.contributor.authorAlkin, A
dc.contributor.authorAlmaráz Aviña, E
dc.contributor.authorAlme, J
dc.contributor.authorAlt, T
dc.contributor.authorAltini, V
dc.contributor.authorAltinpinar, S
dc.contributor.authorAltsybeev, I
dc.contributor.authorAndrei, C
dc.contributor.authorAndronic, A
dc.contributor.authorAnguelov, V
dc.contributor.authorAnielski, J
dc.contributor.authorAnson, C
dc.contributor.authorAntičić, T
dc.contributor.authorAntinori, F
dc.date.accessioned2021-10-08T07:11:40Z
dc.date.available2021-10-08T07:11:40Z
dc.date.issued2012
dc.description.abstractA measurement of the multi-strange Ξ− and Ω− baryons and their antiparticles by the ALICE experiment at the CERN Large Hadron Collider (LHC) is presented for inelastic proton–proton collisions at a centreof-mass energy of 7 TeV. The transverse momentum (pT) distributions were studied at mid-rapidity (|y| < 0.5) in the range of 0.6 < pT < 8.5 GeV/c for Ξ− and Ξ+ baryons, and in the range of 0.8 < pT < 5 GeV/c for Ω− and Ω+. Baryons and antibaryons were measured as separate particles and we find that the baryon to antibaryon ratio of both particle species is consistent with unity over the entire range of the measurement. The statistical precision of the current data has allowed us to measure a difference between the mean pT of Ξ− (Ξ+) and Ω− (Ω+). Particle yields, mean pT, and the spectra in the intermediate pT range are not well described by the PYTHIA Perugia 2011 tune Monte Carlo event generator, which has been tuned to reproduce the early LHC data. The discrepancy is largest for Ω− (Ω+). This PYTHIA tune approaches the pT spectra of Ξ− and Ξ+ baryons below pT < 0.85 GeV/c and describes the Ξ− and Ξ+ spectra above pT > 6.0 GeV/c. We also illustrate the difference between the experimental data and model by comparing the corresponding ratios of (Ω− + Ω+)/(Ξ− + Ξ+) as a function of transverse mass.
dc.identifier.apacitationAbelev, B., Adam, J., Adamová, D., Adare, A. M., Aggarwal, M. M., Aglieri Rinella, G., ... Antinori, F. (2012). Multi-strange baryon production in pp collisions at √s = 7 TeV with ALICE. <i>Physics Letters, B</i>, 712(43195), 309 - 318. http://hdl.handle.net/11427/34665en_ZA
dc.identifier.chicagocitationAbelev, B, J Adam, D Adamová, A M Adare, M M Aggarwal, G Aglieri Rinella, A G Agocs, et al "Multi-strange baryon production in pp collisions at √s = 7 TeV with ALICE." <i>Physics Letters, B</i> 712, 43195. (2012): 309 - 318. http://hdl.handle.net/11427/34665en_ZA
dc.identifier.citationAbelev, B., Adam, J., Adamová, D., Adare, A.M., Aggarwal, M.M., Aglieri Rinella, G., Agocs, A.G. & Agostinelli, A. et al. 2012. Multi-strange baryon production in pp collisions at √s = 7 TeV with ALICE. <i>Physics Letters, B.</i> 712(43195):309 - 318. http://hdl.handle.net/11427/34665en_ZA
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.ris TY - Journal Article AU - Abelev, B AU - Adam, J AU - Adamová, D AU - Adare, A M AU - Aggarwal, M M AU - Aglieri Rinella, G AU - Agocs, A G AU - Agostinelli, A AU - Aguilar Salazar, S AU - Ahammed, Z AU - Ahmad, N AU - Ahmad Masoodi, A AU - Ahn, S U AU - Akindinov, A AU - Aleksandrov, D AU - Alessandro, B AU - Alfaro Molina, R AU - Alici, A AU - Alkin, A AU - Almaráz Aviña, E AU - Alme, J AU - Alt, T AU - Altini, V AU - Altinpinar, S AU - Altsybeev, I AU - Andrei, C AU - Andronic, A AU - Anguelov, V AU - Anielski, J AU - Anson, C AU - Antičić, T AU - Antinori, F AB - A measurement of the multi-strange Ξ− and Ω− baryons and their antiparticles by the ALICE experiment at the CERN Large Hadron Collider (LHC) is presented for inelastic proton–proton collisions at a centreof-mass energy of 7 TeV. The transverse momentum (pT) distributions were studied at mid-rapidity (|y| < 0.5) in the range of 0.6 < pT < 8.5 GeV/c for Ξ− and Ξ+ baryons, and in the range of 0.8 < pT < 5 GeV/c for Ω− and Ω+. Baryons and antibaryons were measured as separate particles and we find that the baryon to antibaryon ratio of both particle species is consistent with unity over the entire range of the measurement. The statistical precision of the current data has allowed us to measure a difference between the mean pT of Ξ− (Ξ+) and Ω− (Ω+). Particle yields, mean pT, and the spectra in the intermediate pT range are not well described by the PYTHIA Perugia 2011 tune Monte Carlo event generator, which has been tuned to reproduce the early LHC data. The discrepancy is largest for Ω− (Ω+). This PYTHIA tune approaches the pT spectra of Ξ− and Ξ+ baryons below pT < 0.85 GeV/c and describes the Ξ− and Ξ+ spectra above pT > 6.0 GeV/c. We also illustrate the difference between the experimental data and model by comparing the corresponding ratios of (Ω− + Ω+)/(Ξ− + Ξ+) as a function of transverse mass. DA - 2012 DB - OpenUCT DP - University of Cape Town IS - 43195 J1 - Physics Letters, B LK - https://open.uct.ac.za PY - 2012 SM - 0370-2693 SM - 1873-2445 T1 - Multi-strange baryon production in pp collisions at √s = 7 TeV with ALICE TI - Multi-strange baryon production in pp collisions at √s = 7 TeV with ALICE UR - http://hdl.handle.net/11427/34665 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34665
dc.identifier.vancouvercitationAbelev B, Adam J, Adamová D, Adare AM, Aggarwal MM, Aglieri Rinella G, et al. Multi-strange baryon production in pp collisions at √s = 7 TeV with ALICE. Physics Letters, B. 2012;712(43195):309 - 318. http://hdl.handle.net/11427/34665.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Physics
dc.publisher.facultyFaculty of Science
dc.sourcePhysics Letters, B
dc.source.journalissue43195
dc.source.journalvolume712
dc.source.pagination309 - 318
dc.source.urihttps://dx.doi.org/10.1016/j.physletb.2012.05.011
dc.subject.otherSubatomär fysik
dc.subject.otherMulti-strange baryons
dc.subject.otherP-T Spectra
dc.subject.otherMid-rapidity
dc.subject.otherProton-proton
dc.subject.otherLHC
dc.subject.otherALICE
dc.titleMulti-strange baryon production in pp collisions at √s = 7 TeV with ALICE
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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