Multiplicity dependence of Γ production at forward rapidity in pp collisions at √s=13 TeV

De Falco, A.;Fionda, F. M.;Usai, G. L.;
2025-01-01

Abstract

The measurement of Gamma(1S), Gamma(2S), and Gamma(3S) yields as a function of the charged-particle multiplicity density, dN(ch)/d eta, using the ALICE experiment at the LHC, is reported in pp collisions at root s = 13 TeV. The Gamma meson yields are measured at forward rapidity (2.5 < y < 4) in the dimuon decay channel, whereas the charged-particle multiplicity is defined at central rapidity (vertical bar eta vertical bar < 1). Both quantities are divided by their average value in minimum bias events to compute the self-normalized quantities. The increase of the self-normalized Gamma(1S), Gamma(2S), and Gamma(3S) yields is found to be compatible with a linear scaling with the self-normalized dN(ch)/d eta, within the uncertainties. The self-normalized yield ratios of excited-to-ground Gamma states are compatible with unity within uncertainties. Similarly, the measured double ratio of the self-normalized Gamma(1S) to the self-normalized J/psi yields, both measured at forward rapidity, is compatible with unity for self-normalized charged-particle multiplicities beyond one. The measurements are compared with theoretical predictions incorporating initial or final state effects.
2025
Inglese
1011
116786
https://www-sciencedirect-com.unica.idm.oclc.org/science/article/pii/S0550321324003523?via=ihub
Esperti anonimi
scientifica
CHARGED-PARTICLE MULTIPLICITY
NONPROMPT J/PSI PRODUCTION
PROTON-PROTON COLLISIONS
PB-PB COLLISIONS
CHARMONIUM SUPPRESSION
PSI(2S) SUPPRESSION
PROMPT
Acharya, S.; Adamova, D.; Adler, A.; Rinella, G. Aglieri; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ahuja, I.; Akindinov, A.; Al-T ...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
1045
none
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