Mid-rapidity anti-baryon to baryon ratios in pp collisions at √ s = 0.9, 2.76 and 7 TeV measured by ALICE (2013)
- Authors:
- Abbas, E
- Carlin Filho, Nelson
- Barros, Gabriel Oliveira Valeriano de
- Deppman, Airton
- Figueredo, Marcel Araujo Silva
- Jahnke, Cristiane
- Godoy, Denise Aparecida Moreira de
- Munhoz, Marcelo Gameiro
- Silva, Antonio Carlos Oliveira da
- Oliveira Filho, Elienos Pereira de
- Suaide, Alexandre Alarcon do Passo
- Szanto de Toledo, Alejandro
- USP affiliated authors: CARLIN FILHO, NELSON - IF ; DEPPMAN, AIRTON - IF ; MUNHOZ, MARCELO GAMEIRO - IF ; SUAIDE, ALEXANDRE ALARCON DO PASSO - IF ; TOLEDO, ALEJANDRO SZANTO DE - IF
- Unidade: IF
- Assunto: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS
- Language: Inglês
- Abstract: The ratios of yields of anti-baryons to baryons probes the mechanisms of baryon-number transport. Results for p/p, Λ/Λ, Ξ + /Ξ − and Ω + /Ω− in pp collisions at √ s = 0.9, 2.76 and 7 TeV, measured with the ALICE detector at the LHC, are reported. Within the experimental uncertainties and ranges covered by our measurement, these ratios are independent of rapidity, transverse momentum and multiplicity for all measured energies. The results are compared to expectations from event generators, such as PYTHIA and HIJING/B, that are used to model the particle production in pp collisions. The energy dependence of p/p, Λ/Λ, Ξ + /Ξ − and Ω + /Ω−, reaching values compatible with unity for √ s = 7 TeV, complement the earlier p/p measurement of ALICE. These dependencies can be described by exchanges with the Regge-trajectory intercept of αJ ≈ 0.5, which are suppressed with increasing rapidity interval ∆y. Any significant contribution of an exchange not suppressed at large ∆y (reached at LHC energies) is disfavoured.
- Imprenta:
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ABNT
ABBAS, E et al. Mid-rapidity anti-baryon to baryon ratios in pp collisions at √ s = 0.9, 2.76 and 7 TeV measured by ALICE. . São Paulo: Instituto de Física, Universidade de São Paulo. Disponível em: http://lanl.arxiv.org/pdf/1305.1562.pdf. Acesso em: 19 abr. 2024. , 2013 -
APA
Abbas, E., Carlin Filho, N., Barros, G. O. V. de, Deppman, A., Figueredo, M. A. S., Jahnke, C., et al. (2013). Mid-rapidity anti-baryon to baryon ratios in pp collisions at √ s = 0.9, 2.76 and 7 TeV measured by ALICE. São Paulo: Instituto de Física, Universidade de São Paulo. Recuperado de http://lanl.arxiv.org/pdf/1305.1562.pdf -
NLM
Abbas E, Carlin Filho N, Barros GOV de, Deppman A, Figueredo MAS, Jahnke C, Godoy DAM de, Munhoz MG, Silva ACO da, Oliveira Filho EP de, Suaide AA do P, Szanto de Toledo A. Mid-rapidity anti-baryon to baryon ratios in pp collisions at √ s = 0.9, 2.76 and 7 TeV measured by ALICE [Internet]. 2013 ;[citado 2024 abr. 19 ] Available from: http://lanl.arxiv.org/pdf/1305.1562.pdf -
Vancouver
Abbas E, Carlin Filho N, Barros GOV de, Deppman A, Figueredo MAS, Jahnke C, Godoy DAM de, Munhoz MG, Silva ACO da, Oliveira Filho EP de, Suaide AA do P, Szanto de Toledo A. Mid-rapidity anti-baryon to baryon ratios in pp collisions at √ s = 0.9, 2.76 and 7 TeV measured by ALICE [Internet]. 2013 ;[citado 2024 abr. 19 ] Available from: http://lanl.arxiv.org/pdf/1305.1562.pdf - Charmonium and e +e − pair photoproduction at mid-rapidity in ultra-peripheral Pb-Pb collisions at √ sNN= 2.76 TeV
- Multiplicity dependence of two-particle azimuthal correlations in pp collisions at the LHC
- Performance of the ALICE VZERO system
- Electron-hadron correlations in pp collisions at √s = 2.76 TeV in the ALICE experiment
- Inclusive J/'psi' production in pp collisions at 'S POT. 1/2'= 2.76 TeV
- Multiplicity dependence of the average transverse momentum in pp, p–Pb, and Pb–Pb collisions at the LHC
- Quasi-elastic barrier distribution and derivation of the nuclear matter diffuseness
- Centrality dependence of p, K, p production in Pb–Pb collisions at p sNN = 2.76 TeV
- Centrality determination of Pb–Pb collisions at p sNN= 2.76 TeV with ALICE
- Directed flow of charged particles at mid-rapidity relative to the spectator plane in Pb–Pb collisions at p sNN = 2.76 TeV
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