RT Journal Article
T1 Multi-strange baryon production in p–Pb collisions at √sNN=5.02TeV
A1 ALICE Collaboration, 
A1 González Ferreiro, Elena
AB The multi-strange baryon yields in Pb–Pbcollisions have been shown to exhibit an enhancement relative to ppreactions. In this work,  and  production rates have been measured with the ALICE experiment as a function of transverse momentum, pT, in p–Pb collisions at a centre-of-mass energy of √sNN=5.02TeV. The results cover the kinematic ranges 0.6GeV/c<pT<7.2GeV/cand 0.8GeV/c<pT<5GeV/c, for  and  respectively, in the common rapidity interval −0.5 <yCMS<0. Multi-strange baryons have been identified by reconstructing their weak decays into charged particles. The pTspectra are analysed as a function of event charged-particle multiplicity, which in p–Pbcollisions ranges over one order of magnitude and lies between those observed in pp and Pb–Pbcollisions. The measured pTdistributions are compared to the expectations from a Blast-Wave model. The parameters which describe the production of lighter hadron species also describe the hyperon spectra in high multiplicity p–Pbcollisions. The yield of hyperons relative to charged pions is studied and compared with results from ppand Pb–Pbcollisions. A continuous increase in the yield ratios as a function of multiplicity is observed in p–Pbdata, the values of which range from those measured in minimum bias pp to the ones in Pb–Pbcollisions. A statistical model qualitatively describes this multiplicity dependence using a canonical suppression mechanism, in which the small volume causes a relative reduction of hadron production dependent on the strangeness content of the hyperon.
PB Elsevier
SN 0370-2693
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22148
UL http://hdl.handle.net/10347/22148
LA eng
NO Adam, J., Adamová, D., Aggarwal, M. M., Rinella, G. A., Agnello, M., Agrawal, N., ... & Akindinov, A. (2016). Multi-strange baryon production in pPb collisions at √sNN= 5.02 TeV. Physics Letters B, 758, 389-401
DS Minerva
RD 30 abr 2026