Evidence for X(3872) in Pb-Pb collisions and studies of its prompt production at √sNN=5.02 TeV
The first evidence for X(3872) production in relativistic heavy ion collisions is reported. The X(3872) production is studied in lead-lead (Pb-Pb) collisions at a center-of-mass energy of root s(NN) = 5.02 TeV per nucleon pair, using the decay chain X(3872) -> J/psi pi(+)pi(-) -> mu(+) mu(-) p...
| Published in: | Physical review letters Vol. 128, № 3. P. 032001-1-032001-18 |
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| Other Authors: | , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001002958 Перейти в каталог НБ ТГУ |
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| 024 | 7 | |a 10.1103/PhysRevLett.128.032001 |2 doi | |
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| 245 | 1 | 0 | |a Evidence for X(3872) in Pb-Pb collisions and studies of its prompt production at √sNN=5.02 TeV |c A. M. Sirunyan, A. Tumasyan, W. Adam [et al.] |
| 336 | |a Текст | ||
| 337 | |a электронный | ||
| 504 | |a Библиогр.: 48 назв. | ||
| 520 | 3 | |a The first evidence for X(3872) production in relativistic heavy ion collisions is reported. The X(3872) production is studied in lead-lead (Pb-Pb) collisions at a center-of-mass energy of root s(NN) = 5.02 TeV per nucleon pair, using the decay chain X(3872) -> J/psi pi(+)pi(-) -> mu(+) mu(-) pi(+)pi(-). The data were recorded with the CMS detector in 2018 and correspond to an integrated luminosity of 1.7 nb(-1). The measurement is performed in the rapidity and transverse momentum ranges vertical bar y vertical bar < 1.6 and 15 < p(T) < 50 GeV/c. The significance of the inclusive X(3872) signal is 4.2 standard deviations. The prompt X(3872) to psi 2S yield ratio is found to be rho(Pb-Pb) = 1.08 +/- 0.49(stat) +/- 0.52(syst), to be compared with typical values of 0.1 for pp collisions. This result provides a unique experimental input to theoretical models of the X(3872) production mechanism, and of the nature of this exotic state. | |
| 653 | |a протон-протонные столкновения | ||
| 653 | |a релятивистские тяжелые ионы | ||
| 653 | |a столкновения ионов свинца | ||
| 655 | 4 | |a статьи в журналах |9 887942 | |
| 700 | 1 | |a Sirunyan, A. M. |9 510821 | |
| 700 | 1 | |a Tumasyan, Armen |9 510818 | |
| 700 | 1 | |a Adam, Wolfgang |9 510819 | |
| 700 | 1 | |a Borshch, Vladislav |9 510820 | |
| 700 | 1 | |a Ivanchenko, Vladimir |9 500157 | |
| 700 | 1 | |a Tcherniaev, Evgueni |9 500158 | |
| 773 | 0 | |t Physical review letters |d 2022 |g Vol. 128, № 3. P. 032001-1-032001-18 |x 1079-7114 | |
| 852 | 4 | |a RU-ToGU | |
| 856 | 4 | |u http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001002958 | |
| 856 | |y Перейти в каталог НБ ТГУ |u https://koha.lib.tsu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=1002958 | ||
| 908 | |a статья | ||
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