48 citations · 250 across the 21 of their papers we have counts for
21 papers · 1 filter
On Exclusive Coherent Production of Bosons in Electron-Proton Collisions
Reuven Balkin, Ta'el Coren, Alexander Jentsch +4
We study the exclusive electroproduction process , with a single-particle final state, in the forward-proton kinematics relevant for the future Electron-Ion Col…
The COSMIC WISPers White Paper: The physics case for Weakly Interacting Slim Particles
Ariel Arza, Deniz Aybas, Shyam Balaji +124
Axions and other very weakly interacting slim particles (WISPs), with masses below 1 GeV, arise naturally in many extensions of the Standard Model of particle physics. In particula…
Braking protons at the EIC: from invisible meson decay to new physics searches
Reuven Balkin, Ta'el Coren, Alexander Jentsch +4
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 w…
Sweeping the pion chimney for axion-like particles with KOTO
Reuven Balkin, Stefania Gori, Dean J. Robinson +1
We demonstrate that novel limits on prompt axion-like particles (ALPs) in the hard-to-probe mass range near the neutral pion - the so-called pion chimney - may be obtained from rec…
Probing CP and flavor violation in neutral kaon decays with ALPs
Reuven Balkin, Stefania Gori, Christiane Scherb
We analyze the three-body decays of the long-lived neutral kaon , where is an axion-like particle (ALP), and compare them to the two-body decay . Wh…
A covariant description of the interactions of axion-like particles and hadrons
Reuven Balkin, Ta'el Coren, Yotam Soreq +1
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 co…
Flavor at FASER: Discovering Light Scalars Beyond Minimal Flavor Violation
Reuven Balkin, Noam Burger, Jonathan L. Feng +1
We study a simple class of flavored scalar models, in which the couplings of a new light scalar to standard-model fermions are controlled by the flavor symmetry responsible for fer…
Probing axion-like particles at the Electron-Ion Collider
Reuven Balkin, Or Hen, Wenliang Li +4
The Electron-Ion Collider~(EIC), a forthcoming powerful high-luminosity facility, represents an exciting opportunity to explore new physics. In this article, we study the potential…
Heavy neutron stars from light scalars
Reuven Balkin, Javi Serra, Konstantin Springmann +2
We study how light scalar fields can change the stellar landscape by triggering a new phase of nuclear matter. Scalars coupled to nucleons can develop a non-trivial expectation val…
Hunting muonic forces at emulsion detectors
Akitaka Ariga, Reuven Balkin, Iftah Galon +2
Only two types of Standard Model particles are able to propagate the meters separating the ATLAS interaction point and FASER: neutrinos and muons. Furthermore, muons are cop…
White dwarfs as a probe of exceptionally light QCD axions
Reuven Balkin, Javi Serra, Konstantin Springmann +2
We study the effects of exceptionally light QCD axions on the stellar configuration of white dwarfs. At finite baryon density, the non-derivative coupling of the axion to nucleons…
On the implications of positive W mass shift
Reuven Balkin, Eric Madge, Tony Menzo +3
We investigate the phenomenological implications of the recent mass measurement by the CDF collaboration, which exhibits tension with the standard model (SM) electroweak fit. P…
On-shell Higgsing for EFTs
Reuven Balkin, Gauthier Durieux, Teppei Kitahara +2
We study the on-shell version of the Higgs mechanism in effective theories (EFTs) containing particles of different spins, focusing on contact terms as a simple starting point. We…
Runaway Relaxion from Finite Density
Reuven Balkin, Javi Serra, Konstantin Springmann +2
Finite density effects can destabilize the metastable vacua in relaxion models. Focusing on stars as nucleation seeds, we derive the conditions that lead to the formation and runaw…
Probing ALPs at the CERN Gamma Factory
Reuven Balkin, Mieczyslaw W. Krasny, Teng Ma +2
The aim of the proposed CERN Gamma Factory is to produce photons per second with energies up to 400 MeV. The photon beam intensity is expected to be a factor of $\ma…
Density Induced Vacuum Instability
Reuven Balkin, Javi Serra, Konstantin Springmann +2
We consider matter density effects in theories with a false ground state. Large and dense systems, such as stars, can destabilize a metastable minimum and allow for the formation o…
A Custodial Symmetry for Muon g-2
Reuven Balkin, Cedric Delaunay, Michael Geller +4
We discuss the recent results on the muon anomalous magnetic moment in the context of new physics models with light scalars. We propose a model in which the one-loop contributions…
The QCD Axion at Finite Density
Reuven Balkin, Javi Serra, Konstantin Springmann +1
We show how the properties of the QCD axion change in systems at finite baryonic density, such as neutron stars. At nuclear saturation densities, where corrections can be reliably…
Dark matter shifts away from direct detection
Reuven Balkin, Maximilian Ruhdorfer, Ennio Salvioni +1
Dark matter could emerge along with the Higgs as a composite pseudo-Nambu-Goldstone boson with decay constant . This type of WIMP is especially compelling b…
Little composite dark matter
Reuven Balkin, Gilad Perez, Andreas Weiler
We examine the dark matter phenomenology of a composite electroweak singlet state. This singlet belongs to the Goldstone sector of a well-motivated extension of the Littlest Higgs…
Charged Composite Scalar Dark Matter
Reuven Balkin, Maximilian Ruhdorfer, Ennio Salvioni +1
We consider a composite model where both the Higgs and a complex scalar , which is the dark matter (DM) candidate, arise as light pseudo Nambu-Goldstone bosons (pNGBs) from a st…