Inclusive $\bar{B} \to X_s \ell^+ \ell^-$ with a hadronic mass cut
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| Acceso en línea: | |
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| _version_ | 1866915089679908864 |
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| author | Huber, Tobias Hurth, Tobias Jenkins, Jack Lunghi, Enrico |
| author_facet | Huber, Tobias Hurth, Tobias Jenkins, Jack Lunghi, Enrico |
| contents | The hadronic mass spectrum of inclusive $\bar{B} \to X_s \ell^+ \ell^-$ is investigated at next to leading order in the heavy quark expansion. For mild cuts on the hadronic mass, the expansion, which applies when the cut is released, remains convergent. However, the cuts used at BaBar and Belle to reduce backgrounds from charged current semileptonic processes are too severe for a description in terms of matrix elements of local operators to apply. Strategies for interpolating between the two regions are discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_03134 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Inclusive $\bar{B} \to X_s \ell^+ \ell^-$ with a hadronic mass cut Huber, Tobias Hurth, Tobias Jenkins, Jack Lunghi, Enrico High Energy Physics - Phenomenology High Energy Physics - Experiment The hadronic mass spectrum of inclusive $\bar{B} \to X_s \ell^+ \ell^-$ is investigated at next to leading order in the heavy quark expansion. For mild cuts on the hadronic mass, the expansion, which applies when the cut is released, remains convergent. However, the cuts used at BaBar and Belle to reduce backgrounds from charged current semileptonic processes are too severe for a description in terms of matrix elements of local operators to apply. Strategies for interpolating between the two regions are discussed. |
| title | Inclusive $\bar{B} \to X_s \ell^+ \ell^-$ with a hadronic mass cut |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2306.03134 |