Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at root s=7 TeV

Audurier, B.;Casula, E. A. R.;Cicalo, C.;De Falco, A.;Fionda, F. M.;Siddhanta, S.;Usai, G. L.;
2017-01-01

Abstract

Two-particle angular correlations were measured in pp collisions at root s = 7 TeV for pions, kaons, protons, and lambdas, for all particle/anti-particle combinations in the pair. Data for mesons exhibit an expected peak dominated by effects associated with mini-jets and are well reproduced by general purpose Monte Carlo generators. However, for baryon-baryon and anti-baryon-anti-baryon pairs, where both particles have the same baryon number, a near-side anti-correlation structure is observed instead of a peak. This effect is interpreted in the context of baryon production mechanisms in the fragmentation process. It currently presents a challenge to Monte Carlo models and its origin remains an open question.
2017
Inglese
77
8
17
Esperti anonimi
internazionale
scientifica
PB collisions; Root-S(NN)=5.02 TEV; Long-range; Multiplicity dependence; Proton; Side; Kaon; Pion; LHC
Adam, J.; Adamova, D.; Aggarwal, M. M.; Rinella, G. Aglieri; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Aiola, S.; Akindinov, A.; A ...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
1017
none
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