Measurements of the transverse-momentum-dependent cross sections of J/psi production at mid-rapidity in proton plus proton collisions at root s=510 and 500 GeV with the STAR detector

0509857 - ÚJF 2020 US eng J - Článek v odborném periodiku
Adam, J. - Adamczyk, L. - Adams, J. R. - Adkins, J. K. - Agakishiev, G. - Bielčík, J. - Bielčíková, Jana - Federič, Pavol - Chaloupka, P. - Holub, L. - Kosarzewski, L. K. - Kramárik, L. - Líčeník, R. - Matonoha, O. - Moravcová, Z. - Rusňák, Jan - Rusňáková, O. - Šimko, Miroslav - Šumbera, Michal - Vaněk, Jan … celkem 347 autorů
Measurements of the transverse-momentum-dependent cross sections of J/psi production at mid-rapidity in proton plus proton collisions at root s=510 and 500 GeV with the STAR detector.
Physical Review D. Roč. 100, č. 5 (2019), č. článku 052009. ISSN 2470-0010. E-ISSN 2470-0029
Grant CEP: GA MŠMT LTT18002
Institucionální podpora: RVO:61389005
Klíčová slova: STAR collaboration * heavy ion collision * meson production
Obor OECD: Nuclear physics
Impakt faktor: 4.833, rok: 2019
Způsob publikování: Open access
https://doi.org/10.1103/PhysRevD.100.052009

We present measurements of the differential cross sections of inclusive J/psi meson production as a function of transverse momentum (p(T)(J/psi) ) using the mu(+)mu(-) and e(+)e(-) decay channels in proton + proton collisions at center-of-mass energies of 510 and 500 GeV, respectively, recorded by the STAR detector at the Relativistic Heavy Ion Collider. The measurement from the mu(+)mu(-) channel is for 0 < p(T)(J/psi) < 9 GeV/c and rapidity range vertical bar y(J/psi)vertical bar < 0.4, and that from the e(+)e(-) channel is for 4 < p(T)(J/psi) < 20 GeV/c and vertical bar y(J/psi)vertical bar < 1.0. The psi(2S) to J/psi ratio is also measured for 4 < p(T)(meson) < 12 GeV/c through the e(+)e(-) decay channel. Model calculations, which incorporate different approaches toward the J/psi production mechanism, are compared with experimental results and show reasonable agreement within uncertainties.
Trvalý link: http://hdl.handle.net/11104/0300464