The transverse momentum distributions of the strange and double-strange hyperon resonances Sigma (1385)±, Xsi (1530)0 produced in p–Pb collisions at √sNN = 5.02 TeV were measured in the rapidity range −0.5 < yCMS < 0 for event classes corresponding to different charged-particle multiplicity densities, ⟨dNch/dηlab⟩. The mean transverse momentumvaluesarepresentedasafunctionof⟨dNch/dηlab⟩, as well as a function of the particle masses and compared with previous results on hyperon production. The integrated yield ratios of excited to ground-state hyperons are constant as a function of ⟨d Nch /dηlab ⟩. The equivalent ratios to pions exhibit an increase with ⟨dNch/dηlab⟩, depending on their strangeness content.

Production of Sigma(1385)± and Xsi(1530)0 in p-Pb collisions at √šsNN = 5.02 TeV

Camerini, P.;Fragiacomo, E.;Lea, R.;Luparello, G.;Margagliotti, G. V.;Piano, S.;Rui, R.;Suljic, M.;Zaccolo, V.;
2017-01-01

Abstract

The transverse momentum distributions of the strange and double-strange hyperon resonances Sigma (1385)±, Xsi (1530)0 produced in p–Pb collisions at √sNN = 5.02 TeV were measured in the rapidity range −0.5 < yCMS < 0 for event classes corresponding to different charged-particle multiplicity densities, ⟨dNch/dηlab⟩. The mean transverse momentumvaluesarepresentedasafunctionof⟨dNch/dηlab⟩, as well as a function of the particle masses and compared with previous results on hyperon production. The integrated yield ratios of excited to ground-state hyperons are constant as a function of ⟨d Nch /dηlab ⟩. The equivalent ratios to pions exhibit an increase with ⟨dNch/dηlab⟩, depending on their strangeness content.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2915558
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