Szczegóły publikacji
Opis bibliograficzny
Coherent $J/\psi$ photoproduction at forward rapidity in ultra-peripheral $Pb–Pb$ collisions at $\sqrt{s_{NN}}=5.02$ TeV / S. Acharya, [et al.], P. J. Konopka, [et al.] // Physics Letters. B ; ISSN 0370-2693. — 2019 — vol. 798 art. no. 134926, s. 1–14. — Bibliogr. s. 8–9, Abstr. — Publikacja dostępna online od: 2019-09-10. — P. Konopka – afiliacja: European Organization for Nuclear Research (CERN), Geneva, Switzerland
Autorzy (1028)
- Acharya Shreyasi
- Konopka Piotr
Dane bibliometryczne
| ID BaDAP | 133019 |
|---|---|
| Data dodania do BaDAP | 2021-03-15 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.physletb.2019.134926 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
The ALICE collaboration performed the first rapidity-differential measurement of coherent J/psi photoproduction in ultra-peripheral Pb-Pbcollisions at a center-of-mass energy root s(NN) = 5.02TeV. The J/psi is detected via its dimuon decay in the forward rapidity region (-4.0 < y < -2.5) for events where the hadronic activity is required to be minimal. The analysis is based on an event sample corresponding to an integrated luminosity of about 750 mu b(-1). The cross section for coherent J/psi production is presented in six rapidity bins. The results are compared with theoretical models for coherent J/psi photoproduction. These comparisons indicate that gluon shadowing effects play a role in the photoproduction process. The ratio of psi' to J/psi coherent photoproduction cross sections was measured and found to be consistent with that measured for photoproduction off protons.