Results 51 to 60 of about 322,979 (191)

Measurement of the effective leptonic weak mixing angle

open access: yesJournal of High Energy Physics
Using pp collision data at s $$ \sqrt{s} $$ = 13 TeV, recorded by the LHCb experiment between 2016 and 2018 and corresponding to an integrated luminosity of 5.4 fb −1, the forward-backward asymmetry in the pp → Z/γ * → μ + μ − process is measured.
The LHCb collaboration   +1141 more
doaj   +1 more source

Non-perturbative effects of the electroweak interaction at the LHC

open access: yesEPJ Web of Conferences, 2017
Assuming an existence of the anomalous triple electro-weak bosons interaction being defined by coupling constant λ we calculate its contribution to interactions of the Higgs with pairs of heavy particles. Bearing in mind experimental restrictions -0.011 <
Arbuzov B.A.
doaj   +1 more source

Some recent results for SU(3) and octonions within the geometric algebra approach to the fundamental forces of nature

open access: yesMathematical Methods in the Applied Sciences, Volume 47, Issue 3, Page 1471-1491, February 2024.
Different ways of representing the group SU(3)$$ SU(3) $$ within a Geometric Algebra approach are explored. As part of this, we consider characteristic multivectors for SU(3)$$ SU(3) $$ and how these are linked with decomposition of generators into commuting bivectors. The setting for this work is within a 6d Euclidean Clifford Algebra.
Anthony Lasenby
wiley   +1 more source

Limits on Dark Photons, Scalars, and Axion‐Electromagnetodynamics with the ORGAN Experiment

open access: yesAnnalen der Physik, Volume 536, Issue 1, January 2024.
The nature of dark matter is one of the biggest mysteries in the Universe. ORGAN is an experiment which seeks to understand dark matter by figuring out what it is made of. In this article, the current sensitivity of ORGAN to various promising dark matter candidates is presented, and the future sensitivity is projected.
Ben T. McAllister   +6 more
wiley   +1 more source

Jets and Vector Bosons in Heavy Ion Collisions

open access: yesEPJ Web of Conferences, 2013
This paper reviews experimental results on jets and electroweak boson (photon,Wand Z) production in heavy-ion collisions, from the CMS and ATLAS detectors, using data collected during 2011 PbPb run and pp data collected at an equivalent energy.
de la Cruz Begoña
doaj   +1 more source

Primer on Axion Physics

open access: yesAnnalen 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

High-precision determination of the Ke3 radiative corrections

open access: yesPhysics Letters B, 2021
We report a high-precision calculation of the Standard Model electroweak radiative corrections in the K→πe+ν(γ) decay as a part of the combined theory effort to understand the existing anomaly in the determinations of Vus.
Chien-Yeah Seng   +3 more
doaj  

Measurement of the Z boson production cross-section in proton-lead collisions at s NN $$ \sqrt{s_{\textrm{NN}}} $$ = 8.16 TeV

open access: yesJournal of High Energy Physics, 2023
This article presents the first measurement of the differential Z-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector.
The LHCb collaboration   +1030 more
doaj   +1 more source

Higgs‐induced screening mechanisms in scalar‐tensor theories

open access: yesAnnals 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

Constraining the Natural MSSM through tunneling to color-breaking vacua at zero and non-zero temperature

open access: yesPhysics Letters B, 2014
We re-evaluate the constraints on the parameter space of the minimal supersymmetric standard model from tunneling to charge- and/or color-breaking minima, taking into account thermal corrections.
J.E. Camargo-Molina   +4 more
doaj   +1 more source

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