Higgs boson decay to charmonia via c-quark fragmentation
Higgs boson decay to charmonia via c-quark fragmentation
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DOI：
10.1007/jhep08(2022)073
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发表时间：
2022-02
影响因子：
5.4
通讯作者：
T. Han;A. Leibovich;Yang Ma;Xiao-Ze Tan
中科院分区：
文献类型：
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作者：
T. Han;A. Leibovich;Yang Ma;Xiao-Ze Tan
在非相对论QCD框架下，我们通过粲夸克碎裂机制计算了色单重态和色八重态的Higgs玻色子到和的衰变分支分数。衰变速率受粲夸克-汤川耦合控制，而不像衰变H →+γ受混合控制。我们发现，H →+的衰变分支分数约为2 × 10 ~（-5），H →+的衰变分支分数约为6 × 10 ~（-5）。本文评述了在高亮度LHC上寻找Higgs玻色子跃迁以检验粲夸克汤川耦合的前景。
We calculate the decay branching fractions of the Higgs boson toandvia the charm-quark fragmentation mechanism for the color-singlet and color-octet states in the framework of non-relativistic QCD. The decay rates are governed by the charm-quark Yukawa coupling, unlike the decay H →+γ, which is dominated by themixing. We find that the decay branching fractions can be about 2 x 10-5 for H →+, and 6 x 10-5 for H →+. We comment on the perspective of searching for the Higgs boson totransition at the High-Luminosity LHC for testing the charm-quark Yukawa coupling.