The transverse momentum distributions of the strange and double-strange hyperon resonances ( Sigma ( 1385)(+/-), Xi ( 1530)(0)) produced in p-Pb collisions at root s(NN) = 5.02 TeV were measured in the rapidity range -0.5 < yCMS < 0 for event classes corresponding to different charged-particle multiplicity densities, < dN(ch)/d eta(lab)> . The mean transverse momentumvalues are presented as a function of < dNch/d eta(lab)>, 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 < dN(ch)/d eta(lab)>. The equivalent ratios to pions exhibit an increase with < dN(ch)/ d eta(lab)>, depending on their strangeness content.

Production of Sigma(1385)(+/-) and Xi(1530)(0) in p-Pb collisions at root s(NN)=5.02 TeV / Adamova, D.; Aggarwal, M.; Rinella, G.; Agnello, M.; Agrawal, N; Bufalino, S.; Grosa, F.; Ravasenga, I.; Ahn, S. U.; Aiola, S.; Akindinov, A.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 77:6(2017), pp. 1-17. [10.1140/epjc/s10052-017-4943-1]

Production of Sigma(1385)(+/-) and Xi(1530)(0) in p-Pb collisions at root s(NN)=5.02 TeV

Agnello, M.;Bufalino, S.;Grosa, F.;Ravasenga, I.;
2017

Abstract

The transverse momentum distributions of the strange and double-strange hyperon resonances ( Sigma ( 1385)(+/-), Xi ( 1530)(0)) produced in p-Pb collisions at root s(NN) = 5.02 TeV were measured in the rapidity range -0.5 < yCMS < 0 for event classes corresponding to different charged-particle multiplicity densities, < dN(ch)/d eta(lab)> . The mean transverse momentumvalues are presented as a function of < dNch/d eta(lab)>, 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 < dN(ch)/d eta(lab)>. The equivalent ratios to pions exhibit an increase with < dN(ch)/ d eta(lab)>, 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/11583/2695177
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