Results 31 to 40 of about 393 (139)

Maximum Mass Limit of Generalized MIT Compact Star: A Theoretical Study of Thin Shell Dynamics and Gravitational Lensing

Fortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract In this study, the properties, equilibrium, and stability of compact objects within the framework of teleparallel gravity with the generalized MIT bag model are investigated. By incorporating the modified field equations, the influence of the generalized bag constant on the structure and physical characteristics of quark stars and neutron ...
Sayantan Ghosh, Sneha Pradhan, Pradyumn Kumar Sahoo   +2 more
wiley   +1 more source

Event generation with exponential scaling in multiplicity using AmpliCol

Journal of High Energy Physics
Efficient generation of LHC events is hindered by the rapidly rising cost of evaluating QCD matrix elements with increasing multiplicity. We build on a recently proposed two-step strategy in which unweighted events are first generated using the leading ...
Rikkert Frederix, Timea Vitos
doaj   +1 more source

Transverse Λ polarization in e + e − processes within a TMD factorization approach and the polarizing fragmentation function

Journal of High Energy Physics, 2022
We perform a re-analysis of Belle data for the transverse Λ and Λ ¯ $$ \overline{\Lambda} $$ polarization in e + e − annihilation processes within a transverse momentum dependent (TMD) factorization approach.
Umberto D’Alesio, Leonard Gamberg, Francesco Murgia, Marco Zaccheddu   +3 more
doaj   +1 more source

Visible GeV ALP from TeV Vector‐Like Leptons

Fortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi, Marta Fuentes Zamoro, Luca Merlo   +2 more
wiley   +1 more source

Measuring the Quantum State of Dark Matter

Annalen der Physik, Volume 536, Issue 1, January 2024.
It is demonstrated how the time series obtained from searches for ultralight bosonic dark matter, such as the axion, can be used to determine whether it is in a coherent or incoherent quantum state. Abstract It is shown how the time series obtained from searches for ultralight bosonic dark matter (DM), such as the axion, can be used to determine ...
David J. E. Marsh
wiley   +1 more source

Polarised cross sections for vector boson production with Sherpa

Journal of High Energy Physics
Measurements of vector boson polarisation in vector boson production processes offer a powerful probe of the electroweak symmetry breaking mechanism, scrutinising the Standard Model and new physics scenarios alike. Since massive vector bosons can only be
Mareen Hoppe, Marek Schönherr, Frank Siegert   +2 more
doaj   +1 more source

Full treatment of the thrust distribution in single inclusive e + e − → h X processes

Journal of High Energy Physics, 2023
Extending the transverse momentum dependent factorization to thrust dependent observables entails a series of difficulties, ultimately associated to the behavior of soft radiation.
M. Boglione, A. Simonelli
doaj   +1 more source

Primer on Axion Physics

Annalen der Physik, Volume 536, Issue 1, January 2024.
A primer on axion physics, emphasizing an intuitive understanding of why the axion solves the strong CP problem. Abstract The canonical axion potential is reviewed, with an emphasis on the field theory underlying radial and angular modes of complex scalar fields.
Felix Yu
wiley   +1 more source

NNPDFpol2.0: a global determination of polarised PDFs and their uncertainties at next-to-next-to-leading order

Journal of High Energy Physics
We present NNPDFpol2.0, a new set of collinear helicity parton distribution functions (PDFs) of the proton based on legacy measurements of structure functions in inclusive neutral-current longitudinally polarised deep-inelastic scattering (DIS), and of W
Juan Cruz-Martinez, Toon Hasenack, Felix Hekhorn, Giacomo Magni, Emanuele R. Nocera, Tanjona R. Rabemananjara, Juan Rojo, Tanishq Sharma, Gijs van Seeventer   +8 more
doaj   +1 more source

Higgs‐induced screening mechanisms in scalar‐tensor theories

Annals of the New York Academy of Sciences, Volume 1531, Issue 1, Page 95-103, January 2024.
Abstract We consider the theory of a light conformally coupled scalar field, that is, one that is coupled directly to the Ricci scalar of the gravitational sector. This theory can be written equivalently as one of a light scalar that is coupled to the Standard Model of particle physics with a particular combination of Higgs‐portal couplings.
Clare Burrage, Peter Millington
wiley   +1 more source