Probing lepton flavor violation in meson decays with LHC data

Journal Article · Mon Aug 28 00:00:00 EDT 2023 · European Physical Journal. C, Particles and Fields (Online)

DOI:https://doi.org/10.1140/epjc/s10052-023-11860-w· OSTI ID:1997035

Descotes-Genon, S.; Faroughy, D. A.; Plakias, I.; Sumensari, O.

Abstract

In this letter, we use LHC data from the Drell–Yan processes $$$$pp\rightarrow \ell _i\ell _j$$$$ $pp\to {\ell }_i{\ell }_j$ (with $$$$i\ne j$$$$ $i\ne j$ ) to derive model-independent upper limits on lepton-flavor-violating meson decays. Our analysis is based on an Effective Field Theory (EFT) approach and it does not require a specific assumption regarding the basis of effective operators. We find that current LHC data (140  $$$$\textrm{fb}^{-1}$$$$ ${\text{fb}}^{-1}$ ) already provides competitive limits on $$$${\mathcal {B}}(B\rightarrow \pi e \tau )$$$$ $B(B\to \pi e\tau )$ and $$$${\mathcal {B}}(B\rightarrow \pi \mu \tau )$$$$ $B(B\to \pi \mu \tau )$ with respect to the ones obtained through experimental searches at the B -factories. Moreover, we derive upper limits on several decays that have not been searched for experimentally yet, such as $$$$D^0\rightarrow e\tau $$$$ $D^0\to e\tau$ in the charm sector, and various semileptonic decays such as $$$$B\rightarrow \rho \mu \tau $$$$ $B\to \rho \mu \tau$ , $$$$B_s\rightarrow K \mu \tau $$$$ $B_s\to K\mu \tau$ and $$$$B_s\rightarrow \phi \mu \tau $$$$ $B_s\to \varphi \mu \tau$ . Lastly, we discuss the validity of the EFT description of LHC data and the impact of loop corrections in our analysis.

• Sponsoring Organization: USDOE
• OSTI ID: 1997035
• Journal Information: European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 8 Vol. 83; ISSN 1434-6052
• Publisher: Springer Science + Business Media
• Country of Publication: Germany
• Language: English