Abstract
In the framework of perturbative QCD and nonrelativistic bound state formalism, we calculate the production of Bc and B*c mesons at the conditions of the CDF andLHCb experiments. We derive first estimations for the Bc wave function from a comparison with the available data.
Highlights
The family of B(c∗) mesons is an interesting though poorly explored part of the quarkonium world
We will rely on the data collected by the CDF Collaboration at the Fermilab Tevatron at 1.8 TeV [1] and 1.96 TeV [2] and by the LHCb Collaboration at CERN at 7 TeV [3] and 8 TeV [4]
The advantage of the latter comes from the ease of including the initial state radiation corrections that are efficiently taken into account in the form of the evolution of unintegrated, or transverse momentum dependent (TMD) gluon densities
Summary
The family of B(c∗) mesons is an interesting though poorly explored part of the quarkonium world. Some properties of these mesons may look apparently different from the ones of the hidden-flavor onium states, their inner structure must be similar and driven by the same physics. Studying the B(c∗) properties is important on its own and can provide an additional cross check of the exploited theoretical models. The flavor composition of B(c∗) mesons excludes the convenient strong and electromagnetic decays channels that could be used as a prompt measure of the nonrelativistic wave function. We will try to obtain an estimate of this essential parameter via considering the production process. All of the meson wave functions were taken there as free parameters, and the returned values were close to those obtained from the decays ψ′→μ+μ−, χc2 → γγ, J/ψ→μ+μ−
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