Bc → J/ψ tensor form factors at large momentum recoil
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We present a next-to-leading order (NLO) relativistic correction to [Formula: see text] tensor form factors within nonrelativistic QCD (NRQCD). We also consider complete Dirac bilinears [Formula: see text] with [Formula: see text] matrices [Formula: see text] in the [Formula: see text] transition. The relation among different current form factors is given and it shows that symmetries emerge in the heavy bottom quark limit. For a phenomenological extension, we propose to extract the long-distance matrix elements (LDMEs) for [Formula: see text] meson from the recent HPQCD lattice data and the NLO form factors at large momentum recoil.
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2019 ◽
Vol 79
(12)
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2016 ◽
Vol 31
(28n29)
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pp. 1645032
1997 ◽
Vol 12
(22)
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pp. 3951-3963
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2013 ◽
Vol 28
(09)
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pp. 1350027
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