Results 41 to 50 of about 39,597 (170)

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst   +2 more
wiley   +1 more source

A procedure g5anchor to anchor γ 5 in Feynman diagrams for the Standard Model

Journal of High Energy Physics
We present a procedure g5anchor to anchor γ 5 in the definition of a Dirac trace with γ 5 in Dimensional Regularization (DR) in Feynman diagrams for the Standard Model, based on a recent revision of the works by Kreimer, Gottlieb and Donohue.
Long Chen
doaj   +1 more source

Atomic Parity Nonconservation: Electroweak Parameters and Nuclear Structure

, 1992
There have been suggestions to measure atomic parity nonconservation (PNC) along an isotopic chain, by taking ratios of observables in order to cancel complicated atomic structure effects.
A. Krasznahorkay, A. M. Martensson Pendrill, B. D. Serot, B. Zeidmann, C. Bouchiat, C. de Jager, C. J. Batty, C. Monroe, C. Olmer, D. B. Kaplan, D. C. Kennedy, D. London, E. D. Commins, E. N. Fortson, E. N. Fortson, E. N. Fortson, E. N. Fortson, F. Garcias, G. Feinberg, G. R. Satchler, G. W. Hoffmann, J. Achtzehnter, J. Ashman, J. D. Walecka, J. Dechargé, J. F. Donnoghue, J. F. Donnoghue, J. Friedrich, L. Ray, L. Ray, L. Wilets, L. Wilets, M. A. Bouchiat, M. A. Bouchiat, M. A. Bouchiat, M. A. Bouchiat, M. A. Bouchiat, M. Beiner, M. C. Noecker, M. M. Sharma, M. Peskin, P. Aufmuth, P. G. Reinhard, P. Quentin, P. Sandars, R. C. Thompson, R. L. Jaffe, S. A. Blundell, S. J. Pollock, S. Weinberg, T. T. S. Kuo, T. W. Donnelly, V. A. Dzuba, V. A. Dzuba, W. D. Meyers, W. Marciano   +55 more
core   +2 more sources

Simulation of a Three‐Nucleons System Transition on Quantum Circuits

Advanced Quantum Technologies, Volume 8, Issue 5, May 2025.
A general procedure is presented to calculate the transition probability for two nuclear states and a transition operator. The ground state is approximated through the variational quantum eigensolver and the first excited one using more sophisticated variational algorithms.
Luca Nigro, Carlo Barbieri, Enrico Prati
wiley   +1 more source

Mixed QCD-EW corrections to the neutral-current Drell-Yan process

Journal of High Energy Physics
We report on the complete computation of the mixed QCD-electroweak corrections to the neutral-current Drell-Yan process. Our calculation holds in the entire range of dilepton invariant masses.
Tommaso Armadillo, Roberto Bonciani, Luca Buonocore, Simone Devoto, Massimiliano Grazzini, Stefan Kallweit, Narayan Rana, Alessandro Vicini   +7 more
doaj   +1 more source

Multiple photon corrections to the neutral-current Drell-Yan process

, 2005
Precision studies of single W and Z production processes at hadron colliders require progress in the calculation of electroweak radiative corrections.
C.M. Carloni Calame, Carlo Michel Carloni Calame, DØ collaboration, E.A. Kuraev, F. A. Berends, G. Altarelli, Guido Montagna, J. Huston, J. Pumplin ., Michele Treccani, Oreste Nicrosini, R. Brock ., S. Frixione, S. Haywood ., U. Baur, W.T. Giele   +15 more
core   +2 more sources

Separating Electroweak and Strong interactions in Drell-Yan processes at LHC: leptons angular distributions and reference frames [PDF]

, 2016
Among the physics goals of LHC experiments, precision tests of the Standard Model in the Strong and Electroweak sectors play an important role. Because of nature of the proton-proton processes, observables based on the measurement of the direction and ...
Richter-Was, E., Was, Z.
core   +2 more sources

Dark Dimension With (Little) Strings Attached

Fortschritte der Physik, Volume 73, Issue 4, April 2025.
Abstract A relation between dark energy and the scale of new physics in weakly coupled string theory is motivated. This mixing between infrared and ultraviolet physics leads to a unique corner for real‐world phenomenology: barring fine‐tunings, the authors are naturally led to the “dark dimension” scenario, a single mesoscopic extra dimension of micron
Ivano Basile, Dieter Lüst
wiley   +1 more source

Two-loop mixed QCD-electroweak amplitudes for Z+jet production at the LHC: bosonic corrections

Journal of High Energy Physics
We present a calculation of the bosonic contribution to the two-loop mixed QCD-electroweak scattering amplitudes for Z-boson production in association with one hard jet at hadron colliders.
Piotr Bargieła, Fabrizio Caola, Herschel Chawdhry, Xiao Liu   +3 more
doaj   +1 more source

Feynman integrals from positivity constraints

Journal of High Energy Physics, 2023
We explore inequality constraints as a new tool for numerically evaluating Feynman integrals. A convergent Feynman integral is non-negative if the integrand is non-negative in either loop momentum space or Feynman parameter space.
Mao Zeng
doaj   +1 more source