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arXiv · 2412.19173

Study of rare top quark decays into a jet plus a charged pseudo-scalar meson

Long-Shun Lu·Lei-Yi Li·Cai-Dian Lü
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Abstract

The semi-inclusive decay processes of a top quark into a charged pseudo-scalar meson and a jet are studied within the framework of QCD factorization. The leading power of the decay matrix elements can be factorized into heavy-to-light quark transition current and a hadron matrix element up to next-to-leading order QCD corrections. We calculate one-loop virtual corrections together with real gluon emission corrections at the {\alpha}s order. The numerical results of the branching ratios are presented for the sum of two-body and three-body decays. We also study the energy cut-off dependence of the gluon jet. These processes are hopeful to be detected in the near future experiments, which can serve as probes for new physics.

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Long-Shun Lu, Lei-Yi Li, Cai-Dian Lü. 2024-12-26. Study of rare top quark decays into a jet plus a charged pseudo-scalar meson. https://arxiv.org/abs/2412.19173

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