| Issue |
EPJ Web Conf.
Volume 312, 2024
22nd Conference on Flavor Physics and CP Violation (FPCP 2024)
|
|
|---|---|---|
| Article Number | 04002 | |
| Number of page(s) | 12 | |
| Section | Heavy Quark Decays and CKM | |
| DOI | https://doi.org/10.1051/epjconf/202431204002 | |
| Published online | 20 November 2024 | |
https://doi.org/10.1051/epjconf/202431204002
Probing new physics in Λb → Λc(→ Λπ)τν decay *
Indian Institute of Technology, North Guwahati, Guwahati 781039, Assam, India
* Based on the paper [1] with Soumitra Nandi and Shantanu Sahoo
** e-mail: ria.sain.2013@gmail.com
Published online: 20 November 2024
We study the 4-body angular distribution for Λb → Λc+(→ Λπ+)ℓ−ν decays and discuss various asymmetric and angular observables in the Standard Model and the new physics scenarios. Considering the new physics effects in b → cτ−ντ transitions, we have constrained the new Wilson coefficients of the one operator and two operator scenarios from the available data on these decays. The two-operator scenario with scalar-pseudoscalar and tensor quark current provides the most plausible solution to the current data. Also, we have tested the new physics sensitivities (one or two-operator scenarios) of the different angular observables in Λb → Λc(→ Λπ+)τ−ντ decays and found correlations among them.
© The Authors, published by EDP Sciences, 2024
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