On the $\sigma(\chi_{c1})/\sigma(\chi_{c2})$ ratio in the $k(t)$-factorization approach
| Autor: | Baranov, Serguei |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
perturbation theory [quantum chromodynamics]
higher-order: 1 quantum chromodynamics: nonperturbative cross section: ratio quarkonium: wave function HERA-B 12.38.Bx production [charmonium] nonperturbative [quantum chromodynamics] interpretation of experiments transverse momentum: factorization polarization: vector factorization [transverse momentum] CDF polarization [quarkonium] ddc:530 quantum chromodynamics: perturbation theory ratio [cross section] 13.85.Ni quarkonium: polarization 1 [higher-order] vector [polarization] wave function [quarkonium] charmonium: production |
| Zdroj: | Physical review / D 83(3), 034035 (2011). doi:10.1103/PhysRevD.83.034035 |
| DOI: | 10.1103/PhysRevD.83.034035 |
| Popis: | Physical review / D 83(3), 034035 (2011). doi:10.1103/PhysRevD.83.034035 We address the puzzle of $\sigma(\chi_{ c1})/\sigma(\chi_{c2})$ ratio at the collider and fixed-target experiments. We consider several factors that can affect the predicted ratio of the production rates. In particular, we discuss the effect of $\chi_{cJ}$ polarization, the effect of including next-to-leading order contributions, and the effect of probably different $\chi_{c1}$ and $\chi_{c2}$ wave functions. Published by Inst., Woodbury, NY |
| Databáze: | OpenAIRE |
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