hep-ph papers | Gist.Science

Pion and $\rho$ meson's unpolarized quark distribution functions from $q\bar{q}$ and all Fock-states within Dyson--Schwinger equations

This paper utilizes the Dyson-Schwinger equations within the rainbow-ladder truncation to compute the unpolarized quark parton distribution functions for the pion and $\rho$ meson, deriving a new correlation matrix for spin-1 hadrons that reveals a significant tensor-polarized PDF and demonstrates substantial deviations from leading Fock-state approximations due to the inclusion of higher Fock-state and gluonic contributions.

Chao Shi, Liming Lu, Wenbao JiaTue, 10 Ma⚛️ hep-ph

Update analysis of $\psi(3686)\to p\bar{p}$

This paper presents an updated analysis of the $\psi(3686) \to p\bar{p}$ decay angular distribution incorporating transverse beam polarization, confirming a slope parameter $\alpha \approx 1.00$ while identifying small but non-negligible two-photon interference effects and predicting a significant $\sin(2\phi)$ azimuthal modulation that motivates future two-dimensional angular studies.

Zhi Gao, Ronggang Ping, Minggang ZhaoTue, 10 Ma⚛️ hep-ph

Probing the Scalar Sector: Discovery Reach for Heavy Higgs Pairs at a $\sqrt{s} = 6$ TeV Muon Collider in the 2HDM Alignment Limit

This study demonstrates that a 6 TeV Muon Collider operating in the 2HDM Type-I alignment limit can achieve unprecedented discovery reach for heavy Higgs pairs through distinctive high-multiplicity jet signatures that effectively suppress Standard Model backgrounds, yielding statistical significances as high as 104,000 for charged pairs at 10 ab $^{-1}$ luminosity.

Ijaz Ahmed, M. Umar Farooq, Farzana Ahmad, Jamil MuhammadTue, 10 Ma⚛️ hep-ph

Two body nonleptonic decays of $\Omega_{b}\rightarrow \Omega_{c}$ beyond tree level

This paper investigates the two-body nonleptonic decays of $\Omega_{b}$ into $\Omega_{c}$ accompanied by pseudoscalar or vector mesons using the naive factorization approach, calculating decay amplitudes across various topologies to determine rates and branching ratios for comparison with other theoretical predictions and experimental data.

Z. Neishabouri, K. Azizi, H. R. MoshfeghTue, 10 Ma⚛️ hep-ph

Precision Higgs Boson Probe of Type-II Seesaw Models

This paper demonstrates that future subpercent-level precision measurements of the Standard Model Higgs diphoton signal strength can indirectly probe and decisively constrain the parameter space of Type-II Seesaw models that currently evades direct LHC searches due to cascade decays.

Saiyad Ashanujjaman, P. S. Bhupal Dev, Jihong Huang, Shun ZhouTue, 10 Ma⚛️ hep-ph

Double Bangs at IceCube as a Window to the Neutrino Mass Origin

This paper demonstrates that renormalization group running of the PMNS matrix, enhanced by light neutrinophilic new particles in low-scale neutrino mass models, can significantly increase the rate of high-energy "double bang" events at IceCube, making these signatures comparable to standard model predictions and offering a potential window into the origin of neutrino mass.

Samiur R. Mir, Carlos A. Argüelles, K. S. Babu, Vedran BrdarTue, 10 Ma⚛️ hep-ph

Flavored QCD axion and Modular invariance

This paper proposes a string-derived supergravity model combining the Standard Model with gauged $U(1)_X$ and modular $SL(2,\mathbb{Z})$ symmetry, where anomaly cancellation conditions uniquely determine flavor structures and axion properties, predicting a specific axion mass and coupling while suppressing flavor-violating interactions and reproducing observed neutrino data.

Yang Hwan AhnTue, 10 Ma⚛️ hep-ph

Constraining $A\to ZH$ with $H\to t\bar t$ in the Low-Mass Region

This paper constrains the $A\to ZH$ process with $H\to t\bar t$ in the low-mass region by recasting Standard Model $t\bar tZ$ measurements, establishing cross-section limits between 0.12 and 0.62 pb while identifying a notable preference for a new physics signal around $m_A \approx 450$ GeV and $m_H \approx 290$ GeV that can be accommodated within a top-philic two-Higgs-doublet model.

Saiyad Ashanujjaman, Guglielmo Coloretti, Andreas Crivellin, Siddharth P. Maharathy, Bruce MelladoTue, 10 Ma⚛️ hep-ph

Muon trident process at far-forward LHC detectors

This paper investigates the feasibility of observing the muon trident process, including the first potential detection of electromagnetic $\tau^+\tau^-$ pair production and QED bound states, at the LHC's far-forward FASER $\nu$ and FASER $\nu$ 2 detectors through $\mu$ -tungsten collisions.

Reinaldo Francener, Victor P. Goncalves, Gabriel Rabelo-SoaresTue, 10 Ma⚛️ hep-ph

Scattering of non-relativistic finite-size particles and puffy dark matter direct detection

This paper investigates the scattering of non-relativistic finite-size particles using the partial wave method to demonstrate how particle size significantly alters interaction potentials and cross sections, revealing non-perturbative effects in puffy dark matter direct detection that depend on the size-to-range ratio and offering stability-based constraints for nugget-type dark matter.

Wu-Long Xu, Jin Min Yang, Jun ZhaoTue, 10 Ma⚛️ hep-ph

Exploring vector-like $B$ -quark pair production at CLIC in fully hadronic final states

This paper demonstrates that the 3 TeV Compact Linear Collider (CLIC) can discover singlet vector-like bottom partners with masses up to approximately 1.5 TeV in the fully hadronic $B\bar{B} \to tW\,tW$ final state by utilizing optimized large-radius jet reconstruction and a cut-based analysis with 5 ab $^{-1}$ of integrated luminosity.

Baoxia Wang, Shuo Yang, Pengxuan ZhuTue, 10 Ma⚛️ hep-ph

Tribute to Henry Primakoff: Chiral Perturbation Theory Tests via Primakoff Reactions

This paper honors Henry Primakoff by reviewing his legacy and recent experimental tests of Chiral Perturbation Theory via Primakoff reactions at CERN and Jefferson Laboratory, which confirm two-flavor predictions while highlighting the need for future measurements with kaons and eta mesons to validate three-flavor theories involving strange quarks.

Murray MoinesterTue, 10 Ma⚛️ hep-ph

On CP-violation and quark masses: reducing the number of free parameters

This paper demonstrates that imposing the CP-violation constraint, specifically the Jarlskog invariant, on a nearly democratic quark mass matrix ansatz reduces the number of free parameters from six to five, thereby establishing an explicit interdependence among the six up- and down-quark mass eigenvalues.

A. KleppeTue, 10 Ma⚛️ hep-ph

Charged lepton flavor violating decays with a pair of light dark matter and muonium invisible decay

This paper investigates charged lepton flavor violating interactions with a pair of light dark matter particles within an effective field theory framework, deriving kinematic distributions to distinguish operator structures and dark matter masses, establishing stringent limits from current experimental data, and demonstrating that future observations of muonium invisible decays could serve as a compelling signature for these flavored dark matter interactions.

Sahabub Jahedi, Yi Liao, Xiao-Dong MaTue, 10 Ma⚛️ hep-ph

Compositness and wave function of shallow bound states in relation to scattering observables

This paper investigates the relationship between the compositeness of shallow bound states and scattering observables using a coupled-channel potential model that incorporates both quark and hadron degrees of freedom, with a specific focus on applying this framework to analyze the internal structure of exotic hadrons such as the $X(3872)$ , $T_{cc}(3875)$ , $D_{s0}(2317)$ , and $D_{s1}(2460)$ .

Ibuki Terashima, Tetsuo HyodoTue, 10 Ma⚛️ hep-ph

Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist

This report reviews recent progress in fixed-order computations, essential ingredients like parton distribution functions and subtraction methods, and identifies necessary higher-order corrections for Standard Model processes to match anticipated LHC experimental precision, continuing the biennial Les Houches tradition.

Alexander Huss, Joey Huston, Stephen Jones, Mathieu Pellen, Raoul RöntschTue, 10 Ma⚛️ hep-ph

Extended IDM theory with low scale seesaw mechanisms

This paper proposes an extended Inert Doublet Model that generates neutrino and charged fermion masses through multi-loop radiative seesaw mechanisms, explains CP violation and multi-component dark matter via discrete symmetries, and simultaneously addresses the 95 GeV diphoton excess and charged lepton flavor violation within current experimental limits.

D. T. Huong, A. E. Cárcamo Hernández, H. T. Hung, T. T. Hieu, Nicolás A. Pérez-Julve, N. T. DuyTue, 10 Ma⚛️ hep-ph

Confront a dilaton model with the LHC measurements

This paper investigates a geometry-derived dilaton model within the metric affine theory framework to identify parameter spaces where the 125 GeV Higgs boson is dilaton-dominant, demonstrating that High Luminosity LHC measurements of Higgs pair production can confirm or rule out this scenario.

J. E. Wu, Q. S. YanTue, 10 Ma⚛️ hep-ph

Catani's generalization of collinear factorization breaking

This paper generalizes soft and collinear factorization in perturbative QCD to multi-collinear configurations, demonstrating how generalized splitting amplitudes encode the breaking of strict collinear factorization in space-like limits and the failure of naive multiplicative factorization in simultaneous soft-collinear regimes.

Leandro Cieri, Prasanna K. Dhani, Germán RodrigoTue, 10 Ma⚛️ hep-ph

Multimessenger Characterization of High-Energy Neutrino Emission from the Brightest Neutrino-Active Galactic Nuclei

This paper utilizes multimessenger data from the five brightest neutrino-active galaxies, combining measured neutrino spectra with sub-GeV gamma-ray observations to constrain neutrino emission models from AGN coronae and assess the contribution of jet-quiet AGNs to the isotropic neutrino background.

Jose Alonso Carpio, Ali Kheirandish, Kohta MuraseTue, 10 Ma⚛️ hep-ph

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hep-ph

Pion and ρ\rhoρ meson's unpolarized quark distribution functions from qqˉq\bar{q}qqˉ​ and all Fock-states within Dyson--Schwinger equations

Update analysis of ψ(3686)→ppˉ\psi(3686)\to p\bar{p}ψ(3686)→ppˉ​

Probing the Scalar Sector: Discovery Reach for Heavy Higgs Pairs at a s=6\sqrt{s} = 6s​=6 TeV Muon Collider in the 2HDM Alignment Limit

Two body nonleptonic decays of Ωb→Ωc\Omega_{b}\rightarrow \Omega_{c}Ωb​→Ωc​ beyond tree level