arXiv subjects

Ta'el Coren

Publications and source records attributed to Ta'el Coren.

3 recordsLinked to original sources

arXiv2026

On Exclusive Coherent Production of Bosons in Electron-Proton Collisions

We study the exclusive electroproduction process $e+p\to e'+p'+X$, with $X$ a single-particle final state, in the forward-proton kinematics relevant for the future Electron-Ion Collider (EIC). We develop a unified $2\to 3$ framework that provides the full event kinematics and incorporates pseudoscalar and vector mesons, as well as axion-like particles and vector mediators such as dark photons. It is based on phenomenological amplitudes constrained by existing photo- and electroproduction data and constructed to admit systematic refinement as new measurements become available. To benchmark the framework, we compare its predictions to flux-factorized descriptions based on the equivalent-photon approximation, demonstrating close agreement for total rates and selected single-differential distributions in the near-real regime, while highlighting the role of finite-$Q^{2}$ correlations for multi-differential observables at larger photon virtualities. As a case study, we perform a detailed kinematic analysis of the missing-proton-energy signature, illustrating how the full $2\to 3$ treatment informs forward-proton acceptance and signal selection in realistic EIC configurations.

hep-ph↗

arXiv2025

Braking protons at the EIC: from invisible meson decay to new physics searches

We investigate the sensitivity of the Electron-Ion Collider~(EIC) to invisible final states in coherent exclusive electroproduction. The characteristic signal is a forward proton with reduced energy and little additional detector activity. Using the excellent particle detection capabilities and kinematics reconstruction at the EIC, we argue that backgrounds can be strongly suppressed. While our analysis applies to various states, we specifically focus on vector and pseudoscalar particles: (i)~neutral mesons ($P = \pi^0,\eta^{(\prime)}, V = \rho^{0},\omega,\phi$), whose invisible Standard Model decays are extremely suppressed, and (ii)~gluon-coupled axion-like particles~(ALPs) decaying invisibly to a dark sector. With the baseline detector and a conservative residual-background estimate, the EIC can improve the sensitivity to invisible $\eta$, $\eta'$, $\omega$, and $\phi$ decays by factors of about $4$-$40$ and probe invisible $\rho^0$ decays for the first time. With further background reduction and optimized detector performance, the projected sensitivity may reach branching fractions as small as $4\times10^{-11}$. In addition, under the same conditions, the EIC would directly probe invisibly decaying ALPs with the couplings up to $f_a\sim 10^5\,\GeV$ and masses in the range $0.1$-$2\,\GeV$.

hep-ph↗

arXiv2025

A covariant description of the interactions of axion-like particles and hadrons

We present a covariant framework for analyzing the interactions and decay rates of axion-like particles (ALPs) that couple to both gluons and quarks. We identify combinations of couplings that are invariant under quark-field redefinitions, and use them to obtain physical expressions for the prominent decay rates of such ALPs, which are compared with previous calculations for scenarios where ALPs couple exclusively to quarks or to gluons. Our framework can be used to obtain ALP decay rates for arbitrary ALP couplings to gluons and quarks across a broad range of ALP masses.

hep-ph↗