Publication
Measurement of prompt and nonprompt $\mathrm{J}/{\psi }$ production in $\mathrm {p}\mathrm {p}$ and $\mathrm {p}\mathrm {Pb}$ collisions at $\sqrt{s_{\mathrm {NN}}} =5.02\,\text {TeV} $
| dc.contributor.author | CMS collaboration (2236 authors) | |
| dc.contributor.author | Nayak, Aruna | |
| dc.contributor.author | Bargassa, Pedrame | |
| dc.contributor.author | Beirão Da Cruz E Silva, Cristóvão | |
| dc.contributor.author | Calpas, Betty | |
| dc.contributor.author | Di Francesco, Agostino | |
| dc.contributor.author | Faccioli, Pietro | |
| dc.contributor.author | Ferreira Parracho, Pedro Guilherme | |
| dc.contributor.author | Gallinaro, Michele | |
| dc.contributor.author | Hollar, Jonathan | |
| dc.contributor.author | Leonardo, Nuno | |
| dc.contributor.author | Lloret Iglesias, Lara | |
| dc.contributor.author | Rodrigues Antunes, Joao | |
| dc.contributor.author | Seixas, Joao | |
| dc.contributor.author | Toldaiev, Oleksii | |
| dc.contributor.author | Vadruccio, Daniele | |
| dc.contributor.author | Varela, Joao | |
| dc.contributor.author | Vischia, Pietro | |
| dc.contributor.author | David Tinoco Mendes, Andre | |
| dc.contributor.author | Silva, Pedro | |
| dc.contributor.author | Musella, Pasquale | |
| dc.contributor.author | Pela, Joao | |
| dc.date.accessioned | 2019-02-04T12:19:39Z | |
| dc.date.available | 2019-02-04T12:19:39Z | |
| dc.date.issued | 2017-04-27 | |
| dc.date.updated | 2019-02-04T12:19:39Z | |
| dc.description.abstract | This paper reports the measurement of $\mathrm{J}/{\psi }$ meson production in proton–proton ( $\mathrm {p}\mathrm {p}$ ) and proton–lead ( $\mathrm {p}\mathrm {Pb}$ ) collisions at a center-of-mass energy per nucleon pair of $5.02\,\text {TeV} $ by the CMS experiment at the LHC. The data samples used in the analysis correspond to integrated luminosities of 28 $\,\text {pb}^{-1}$ and 35 $\,\text {nb}^{-1}$ for $\mathrm {p}\mathrm {p}$ and $\mathrm {p}\mathrm {Pb}$ collisions, respectively. Prompt and nonprompt $\mathrm{J}/{\psi }$ mesons, the latter produced in the decay of ${\mathrm {B}}$ hadrons, are measured in their dimuon decay channels. Differential cross sections are measured in the transverse momentum range of $2<p_{\mathrm {T}} <30{\,\text {GeV}/{c}} $ , and center-of-mass rapidity ranges of $|y_\mathrm{{CM}} |<2.4$ ( $\mathrm {p}\mathrm {p}$ ) and $-2.87<y_\mathrm{{CM}}<1.93$ ( $\mathrm {p}\mathrm {Pb}$ ). The nuclear modification factor, $R_{\mathrm {p}\mathrm {Pb}}$ , is measured as a function of both $p_{\mathrm {T}}$ and $y_\mathrm{{CM}}$ . Small modifications to the $\mathrm{J}/{\psi }$ cross sections are observed in $\mathrm {p}\mathrm {Pb}$ relative to $\mathrm {p}\mathrm {p}$ collisions. The ratio of $\mathrm{J}/{\psi }$ production cross sections in $\mathrm {p}$ -going and Pb-going directions, $R_\mathrm{{FB}}$ , studied as functions of $p_{\mathrm {T}}$ and $y_\mathrm{{CM}}$ , shows a significant decrease for increasing transverse energy deposited at large pseudorapidities. These results, which cover a wide kinematic range, provide new insight on the role of cold nuclear matter effects on prompt and nonprompt $\mathrm{J}/{\psi }$ production. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Eur.Phys.J. C77 (2017) 269; DOI 10.1140/epjc/s10052-017-4828-3 | |
| dc.identifier.uri | http://dx.doi.org/10.1140/epjc/s10052-017-4828-3 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27283 | |
| dc.language.iso | eng | |
| dc.title | Measurement of prompt and nonprompt $\mathrm{J}/{\psi }$ production in $\mathrm {p}\mathrm {p}$ and $\mathrm {p}\mathrm {Pb}$ collisions at $\sqrt{s_{\mathrm {NN}}} =5.02\,\text {TeV} $ | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |