Investigating the role of new physics in semileptonic $$\varUpsilon (nS) \rightarrow B_c l^-{\bar{\nu }}_{l} $$ Υ ( n S ) → B c l - ν ¯ l weak decays
Abstract Recently, the excess in the measurement of the branching fractions of $${\bar{B}} \rightarrow D^{(*)} \tau ^- {\bar{\nu }}_{\tau }$$ B ¯ → D ( ∗ ) τ - ν ¯ τ and $$B_c \rightarrow J/\varPsi \tau ^-{\bar{\nu }}_{\tau }$$ B c → J / Ψ τ - ν ¯ τ compared to the standard model expectation hints t...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-03-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14044-w |
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