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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.11574 |
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| _version_ | 1866911588875763712 |
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| author | Arata, Carolina Corredoira, Imanol Lightbody, Alisha Winn, Michael |
| author_facet | Arata, Carolina Corredoira, Imanol Lightbody, Alisha Winn, Michael |
| contents | A method for selecting and/or rejecting leptons from charm semileptonic decays based on the tagging of the secondary vertex using a hadron track is introduced. The method is developed for dimuon Drell-Yan measurements in LHCb using full simulations in proton-proton collisions at $\sqrt{s}=13.6$ TeV. We focus on the invariant mass range between 2.9 and 5 GeV/$c^2$ with single muon transverse momentum larger than 1 GeV/$c$. A novel strategy is detailed for background rejection, achieving an improvement of the signal over background of a factor $\sim 4$ at an efficiency of 81% with minimal bias on the Drell-Yan signal properties. Moreover, a second approach is presented for the construction of unbiased background-pure samples of single muons from charm decays, achieving a charm efficiency of 21.4% at a Drell-Yan efficiency of 1.1%. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_11574 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | SemiCharmTag: a tool for Semileptonic Charm tagging Arata, Carolina Corredoira, Imanol Lightbody, Alisha Winn, Michael High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment A method for selecting and/or rejecting leptons from charm semileptonic decays based on the tagging of the secondary vertex using a hadron track is introduced. The method is developed for dimuon Drell-Yan measurements in LHCb using full simulations in proton-proton collisions at $\sqrt{s}=13.6$ TeV. We focus on the invariant mass range between 2.9 and 5 GeV/$c^2$ with single muon transverse momentum larger than 1 GeV/$c$. A novel strategy is detailed for background rejection, achieving an improvement of the signal over background of a factor $\sim 4$ at an efficiency of 81% with minimal bias on the Drell-Yan signal properties. Moreover, a second approach is presented for the construction of unbiased background-pure samples of single muons from charm decays, achieving a charm efficiency of 21.4% at a Drell-Yan efficiency of 1.1%. |
| title | SemiCharmTag: a tool for Semileptonic Charm tagging |
| topic | High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment |
| url | https://arxiv.org/abs/2604.11574 |