Testing Lepton Flavor Universality at the Electron-Ion Collider

Abstract

Measurements of $b\to c{\tau }^{-}{\bar{\nu }}_{\tau }$ transitions at colliders are highly motivated for testing lepton flavor universality (LFU), a cornerstone hypothesis of the Standard Model (SM). Potential observations of LFU violation could provide significant evidence for physics beyond the SM (BSM). The substantial production of $b$-hadrons at the Electron-Ion Collider (EIC) would highlight its potential to support LFU testing and complement studies conducted at other experimental facilities. In this paper, we study the production of $b$-hadrons in deep inelastic scattering processes at the EIC with $\sqrt{s}=100\mathrm{GeV}$. We estimate the $b$-hadron yields at the EIC to reach $\mathcal{O}(10^9)$ with an integrated luminosity of up to $10^3{\mathrm{fb}}^{-1}$. Furthermore, we perform a systematic study on various $b$-hadron decays, exploring the sensitivities of LFU-violating observables, including $R_{J/\psi }$, $R_{D_s^{(\ast )}}$ and $R_{{\Lambda }_c}$. Detailed strategies for track-based event reconstruction are investigated for these observables. We also include a discussion of the annihilation process $B_c^{+}\to {\tau }^{+}{\nu }_{\tau }$. Finally, we provide a theoretical interpretation of the projected sensitivities within the framework of low energy effective field theory (LEFT). Our analysis indicates that the EIC has the potential to constrain the relevant Wilson coefficients at $\mathcal{O}(0.1)$, offering complementary insights to other measurements.

v1: 26 pages, 11 figures, 13 tables; v2: 27 pages, 11 figures, 13 tables

References in corpus (39)

• emcee: The MCMC Hammer
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• Dimension-Six Terms in the Standard Model Lagrangian
• New parton distribution functions from a global analysis of quantum chromodynamics
• Low-Energy Effective Field Theory below the Electroweak Scale: Operators and Matching
• Rates for Inclusive Deep-Inelastic Electroproduction of Charm Quarks at HERA
• CEPC Technical Design Report -- Accelerator (v2)
• Finite-Mass Effects on Inclusive B-Meson Hadroproduction
• Semileptonic decays $B_c\to ({\eta }_c,J/\Psi )l\nu$ in the perturbative QCD approach
• Phenomenology of ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ using lattice QCD calculations
• Fermion Mass Hierarchies, Large Lepton Mixing and Residual Modular Symmetries
• Charged Lepton Flavor Violation at the EIC
• Anatomy of $b\to c\tau \nu$ anomalies
• Weak decays of $B_s$ mesons to $D_s$ mesons in the relativistic quark model
• ${\Lambda }_b\to ({\Lambda }_c,p)\tau \nu$ decays within standard model and beyond
• $B_s\to D_s\ell \nu$ Form Factors and the Fragmentation Fraction Ratio $f_s/f_d$
• Removing flat directions in SMEFT fits: how polarized electron-ion collider data can complement the LHC
• Lepton-Flavor-Violating ALPs at the Electron-Ion Collider: A Golden Opportunity
• Charm jets as a probe for strangeness at the future Electron-Ion Collider
• Electron-to-Tau Lepton Flavor Violation at the Electron-Ion Collider
• Probing the dark photon via polarized DIS scattering at the HERA and EIC
• Global fit to $b\to c\tau \nu$ anomalies as of Spring 2024
• Searching for the axion-like particle at the EIC
• Maximizing the Impact of New Physics in $b\to c\tau \nu$ Anomalies
• Jet Charge: A new tool to probe the anomalous $Zb\bar{b}$ couplings at the EIC
• Analysis of $B_c\to \tau {\nu }_{\tau }$ at CEPC
• Signature of Lepton flavor universality violation in $B_s\to D_s\tau \nu$ semileptonic decays
• The anomalous $Zb\bar{b}$ couplings at the HERA and EIC
• Semileptonic decays $B/B_s\to (D^{(\ast )},D_s^{(\ast )})l{\nu }_l$ in the PQCD approach with the lattice QCD input
• Neutral-Current Electroweak Physics and SMEFT Studies at the EIC
• Form factors and branching fraction calculations for $B_s\to D_s^{(\ast )}{\ell }^{+}{\nu }_{\ell }$ in view of LHCb observation
• Heavy Neutral Leptons at the Electron-Ion Collider
• Transverse spin asymmetries at the EIC as a probe of anomalous electric and magnetic dipole moments
• Prospects for $B_c^{+}$ and $B^{+}\to {\tau }^{+}{\nu }_{\tau }$ at FCC-ee
• $b\to s{\tau }^{+}{\tau }^{-}$ Physics at Future $Z$ Factories
• Displaced Signals of Hidden Vectors at the Electron-Ion Collider
• ${\Lambda }_b^0$-baryon production in pp collisions in the general-mass variable-flavour-number scheme and comparison with CMS and LHCb data
• The ratio $\mathcal{R}(D_s)$ for $B_s\to D_s\ell {\nu }_{\ell }$ by using the QCD light-cone sum rules within the framework of heavy quark effective field theory
• Exploration of hadronization through heavy flavor production at the future Electron-Ion Collider

Cited by in corpus (1)

• Probing top-quark electroweak couplings indirectly at the Electron-Ion Collider