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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F19%3A00337237" target="_blank" >RIV/68407700:21340/19:00337237 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.100.052009" target="_blank" >https://doi.org/10.1103/PhysRevD.100.052009</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.100.052009" target="_blank" >10.1103/PhysRevD.100.052009</a>

Result language
angličtina
Original language name
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
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
<a href="/en/project/EF16_013%2F0001569" target="_blank" >EF16_013/0001569: Brookhaven National Laboratory - participation of the Czech Republic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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