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Bottom-Flavored Mono-Tau Tails at the LHC

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arxiv 2008.07541 v2 pith:HNBQFXV2 submitted 2020-08-17 hep-ph hep-ex

David Marzocca , Ui Min , Minho Son This is my paper · ORCID
classification hep-phhep-ex
keywords analysislimitsoperatorsb-taggingdimension-sixeffectiveflavorimprovement
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We study the effective field theory sensitivity of an LHC analysis for the $\tau \nu$ final state with an associated b-jet. To illustrate the improvement due to the b-tagging, we first recast the recent CMS analysis in the $\tau\nu$ channel, using an integrated luminosity of 35.9 fb$^{-1}$ at $\sqrt{s}=13$ TeV, and provide limits on all the dimension-six effective operators which contribute to the process. The expected limits from the b-tagged analysis are then derived and compared. We find an improvement of approximately $\sim 30\%$ in the bounds for operators with a b quark. We also discuss in detail possible angular observables to be used as a discriminator between dimension-six operators with different Lorentz structure. Finally, we study the impact of these limits on some simplified scenarios aimed at addressing the observed deviations from the Standard Model in lepton flavor universality ratios of semileptonic B-meson decays. In particular, we compare the collider limits on those scenarios set by our analysis either with or without the b-tagging, assuming an integrated luminosity of 300 fb$^{-1}$, with relevant low-energy flavor measurements.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Flavor Violations in $B$-Mesons within Non-Minimal SU(5)

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A non-minimal SU(5) model with R2 leptoquark and S6 diquark is fitted to B-decay anomalies in b→cτν, B→Kπ, and B→Kνν, but the benchmark B→Kνν rate rises only about 3.5% above the Standard Model.

  2. On the EFT validity for Drell-Yan tails at the LHC

    hep-ph 2024-12 conditional novelty 6.0 of 10

    For t-channel mediators such as the U1 leptoquark, Drell-Yan EFT bounds are accurate at the 10% level for masses above about 1.5 TeV when the series is truncated at amplitude level, while s-channel mediators need E mu...

  3. New Physics at the Muon (Synchrotron) Ion Collider: MuSIC for several scales

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A TeV-scale muon-ion collider (MuSIC) could probe new physics in four BSM scenarios with reach surpassing the HL-LHC and other future facilities.

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