New Physics in inclusive $\bar{B} \to X_c \ell \barν$ decays
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866911608474697728 |
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| author | Carvunis, Alexandre Finauri, Gael Gambino, Paolo Jung, Martin Mächler, Sandro |
| author_facet | Carvunis, Alexandre Finauri, Gael Gambino, Paolo Jung, Martin Mächler, Sandro |
| contents | We present the first global phenomenological fit of inclusive $\bar B\to X_c\ell\barν$ observables to all available experimental data allowing for generic dimension-six New Physics interactions in the Weak Effective Theory. The fit includes both New Physics Wilson coefficients and non-perturbative QCD parameters. New Physics contributions are calculated including power corrections up to $\mathcal O(Λ_{\rm QCD}^3/m_b^3)$ and perturbative QCD corrections up to $\mathcal O(α_s)$. We find no significant preference for New Physics and obtain bounds on the size of the relevant Wilson Coefficients competitive with those coming from exclusive modes. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2604_18443 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | New Physics in inclusive $\bar{B} \to X_c \ell \barν$ decays Carvunis, Alexandre Finauri, Gael Gambino, Paolo Jung, Martin Mächler, Sandro High Energy Physics - Phenomenology We present the first global phenomenological fit of inclusive $\bar B\to X_c\ell\barν$ observables to all available experimental data allowing for generic dimension-six New Physics interactions in the Weak Effective Theory. The fit includes both New Physics Wilson coefficients and non-perturbative QCD parameters. New Physics contributions are calculated including power corrections up to $\mathcal O(Λ_{\rm QCD}^3/m_b^3)$ and perturbative QCD corrections up to $\mathcal O(α_s)$. We find no significant preference for New Physics and obtain bounds on the size of the relevant Wilson Coefficients competitive with those coming from exclusive modes. |
| title | New Physics in inclusive $\bar{B} \to X_c \ell \barν$ decays |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2604.18443 |