dc.contributor.author | KARASU UYSAL, Ayben | |
dc.contributor.author | ALICE Collaboration | |
dc.date.accessioned | 2019-07-05T11:34:00Z | |
dc.date.available | 2019-07-05T11:34:00Z | |
dc.date.issued | 2015 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12498/521 | |
dc.description.abstract | We have performed the first measurement of the coherent ψ(2S) photo-production cross section in ultra-
peripheral Pb–Pb collisions at the LHC. This charmonium excited state is reconstructed via the ψ(2S)→
l+l− and ψ(2S)→J/ψπ+π− decays, where the J/ψ decays into two leptons. The analysis is based on an
event sample corresponding to an integrated luminosity of about 22 μb−1. The cross section for coherent
ψ (2S) production in the rapidity interval −0.9 < y < 0.9 is dσ coh /d y = 0.83 ± 0.19�����stat + syst����� mb. The ψ (2S)
ψ (2S) to J/ψ coherent cross section ratio is 0.34+0.08 (stat + syst). The obtained results are compared to theoretical models. | en_US |
dc.relation | http://dx.doi.org/10.1016/j.physletb.2015.10.040 | en_US |
dc.subject | ψ(2S) photo-production, LHC, ALICE | en_US |
dc.title | Coherent ψ(2S) photo-production in ultra-peripheral Pb–Pb collisions at √sNN = 2.76 TeV | en_US |
dc.type | Makale | en_US |
eperson.orcidid | 0000-0001-6297-2532 | en_US |