Institute for High Energy Physics

Earth as a transducer for ultralight bosonic dark-matter detection

Saarik Kalia, Ibrahim A. Sulai

Ultralight bosonic dark matter (UBDM) that couples to electromagnetism can generate an oscillating magnetic-field signal at the Earth's surface. This is referred to as the ``Earth…

Revising Indirect Dark Matter Constraints with Updated Astrophysical $J$ -Factor Priors

Giacomo D'Amico

Indirect searches for particle dark matter with gamma-ray experiments have produced a large number of constraints on the annihilation cross section (or decay lifetime) over a wide…

Phenomenology of a double dilaton soft-wall model: Alpha strong from Ricci flow and pion Form Factors at intermediate-energy region

Héctor Cancio, Pere Masjuan

Through a holographic model of QCD, we present a phenomenological approach to study the running of the strong coupling constant α_s in both non-perturbative and perturbative regime…

PDF at small $x$ in the non-perturbative region

M. L. Nekrasov

Parton distribution function (PDF) at small $x$ in a fast-moving proton is investigated within an upgraded parton model that includes parton splitting with branching cascades and p…

From QCD-Based Descriptions to Direct Fits: A Unified Study of Nucleon Electromagnetic Form Factors

Hossein Vaziri, Mohammad Reza Shojaei, Pere Masjuan

We present a detailed study of the nucleon electromagnetic form factors in the spacelike region by combining three complementary approaches: two GPD-based contributions and a vecto…

Neutral and charged pion Form Factors in the intermediate-energy region from double-dilaton HQCD model

Héctor Cancio, Pere Masjuan

We compute the Form Factors of both neutral and charged pion using a non-perturbative running of the strong coupling constant $α_{s}$ obtained using a double-dilaton Holographic QCD…

Assessing the role of threshold conditions in the determination of uncertainties in pole extractions using Padé approximants

Balma Duch, Pere Masjuan

In this letter, we discuss the determination of the $f_{0} (500)$ resonance by analytic continuation through Padé approximants of the $π π$ -scattering amplitude from the physical regio…

Weak Scale Triggers in the SMEFT

Pier Giuseppe Catinari, Raffaele Tito D'Agnolo, Pablo Sesma

There are no weak scale triggers in the SMEFT up to dimension six that can solve the hierarchy problem far above the weak scale. Our arguments can be used to show that the same is…

Towards the Direct Detection of Composite Ultraheavy Dark Matter in Quantum Sensor Arrays

Dorian W. P. Amaral, Erqian Cai, Andrew J. Long +2

Quantum sensor arrays have recently been proposed as a promising platform for the direct detection of ultraheavy dark matter, which is typically assumed to behave as a point-like p…

Dynamically generated tilt of isocurvature fluctuations

Saarik Kalia

Light scalar fields acquire isocurvature fluctuations during inflation. While these fluctuations could lead to interesting observable signatures at small scales, they are strongly…

Quantifying EFT Uncertainties in LHC Searches

Spencer Chang, Markus A. Luty, Teng Ma +2

Effective Field Theory (EFT) is a general framework to parametrize the low-energy approximation to a UV model that is widely used in model-independent searches for new physics. The…

Probing Fundamental Constant Oscillation in the Galactic Center with S-Star Spectroscopy

Zhaoyu Bai, Vitor Cardoso, Yifan Chen +4

Astrophysical spectroscopy provides a powerful probe of spacetime variations of fundamental constants, as atomic and ionic emission and absorption lines depend sensitively on the f…

Does the existence of $f_{0}$ meson enlarge the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay probability?

E. K. Karkaryan, V. F. Obraztsov, M. I. Vysotsky

We estimate a possible contribution of the two-pion system $f_{0} (500)$ wide resonance to the decay probability of the super rare decay $K^{+} \to 3 π^{0} e^{+} ν$ . We vary the width of the…

Model-independent unbinned analysis of $B \to K^{*} (\to K^{+} π^{-}) μ^{+} μ^{-}$ : zeroes, bounds, Wilson coefficients and symmetries

Bernat Capdevila, Joaquim Matias, Martín Novoa-Brunet +2

We present a model-independent method to study the four-body decay $B \to K^{*} (\to K^{+} π^{-}) μ^{+} μ^{-}$ , based on extracting continuous observables with a moments approach. The method allo…

Net-Baryon Number Probability Distribution As an Indicator of Phase Transition

R. N. Rogalyov, V. A. Goy

The net-baryon number probability distribution and the related pressure and density are studied in the Cluster Expansion Model (CEM) and the obtained results are extrapolated to th…

hep-ph2024★ 3 cited

On the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay

E. K. Karkaryan, K. V. Kiselev, V. F. Obraztsov +2

The OKA Collaboration has obtained a new upper limit on the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay probability which is 65 times lower than the one currently listed by PDG. However it is…

hep-ph2024★ 7 cited

Massive graviton dark matter searches with long-baseline atom interferometers

Diego Blas, John Carlton, Christopher McCabe

Atom interferometers offer exceptional sensitivity to ultra-light dark matter (ULDM) by precisely measuring effects on atomic systems. Previous studies have demonstrated their capa…

High-energy Coulomb scattering of spatially extended particles

M. L. Nekrasov

We analyze pure Coulomb high-energy elastic scattering of charged particles (hadrons or nuclei), discarding their strong interactions. We distinguish three scattering modes, determ…

The Equation of State and Multiparticle Production

R. N. Rogalyov

We discuss the distribution of fireballs produced in heavy-ion collisions in the net-baryon number and argue that neither the Free-Quark Model (FQM) nor the Hadron Resonance Gas (H…

hep-ph2024★ 12 cited

Isospin breaking corrections in $2 π$ production in tau decays and $e^{+} e^{-}$ annihilation: consequences for the muon $g - 2$ and CVC tests

Gabriel López Castro, Alejandro Miranda, Pablo Roig

We revisit the isospin-breaking corrections relating the $e^{+} e^{-}$ hadronic cross-section and the tau decay spectral function, focusing on the di-pion channel, that gives the domina…

hep-ph2024★ 13 cited

Why detect forward muons at a muon collider

Maximilian Ruhdorfer, Ennio Salvioni, Andrea Wulzer

We survey the opportunities offered by the detection of the forward muons that accompany the creation of neutral effective vector bosons at a muon collider, in different kinematic…