Impact of η(c) hadroproduction data on charmonium production and polarization within the nonrelativistic QCD framework.
Phys Rev Lett
; 114(9): 092006, 2015 Mar 06.
Article
em En
| MEDLINE
| ID: mdl-25793807
ABSTRACT
With the recent LHCb data on η_{c} production and based on heavy quark spin symmetry, we obtain the long-distance matrix elements for both η_{c} and J/ψ productions, among which, the color-singlet one for η_{c} is obtained directly by the fit of experiment for the first time. Using our long-distance matrix elements, we can provide good description of the η_{c} and J/ψ hadroproduction measurements. Our predictions on J/ψ polarization are in good agreement with the LHCb data, explain most of the CMS data, and pass through the two sets of CDF measurements in the medium p_{t} region. Considering all the possible uncertainties carefully, we obtained quite narrow bands of the J/ψ polarization curves.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Partículas Elementares
/
Modelos Teóricos
/
Física Nuclear
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
China