Results 111 to 120 of about 82,112 (257)

Mapping the SMEFT at high-energy colliders: from LEP and the (HL-)LHC to the FCC-ee

Journal of High Energy Physics
We present SMEFiT3.0, an updated global SMEFT analysis of Higgs, top quark, and diboson production data from the LHC complemented by electroweak precision observables (EWPOs) from LEP and SLD.
Eugenia Celada, Tommaso Giani, Jaco ter Hoeve, Luca Mantani, Juan Rojo, Alejo N. Rossia, Marion O. A. Thomas, Eleni Vryonidou   +7 more
doaj   +1 more source

Connecting electroweak-scale observables to BSM physics through EFT and Bayesian statistics

, 2021
Recognizing the potential of effective field theories to posit multiple beyond Standard Model (BSM) scenarios in a similar footing with a possibility to compare them, we inspect the effects of 11 single scalar-multiplet extensions of the SM on the ...
Anisha, S. Das Bakshi, J. Chakrabortty, S. Patra   +3 more
semanticscholar   +1 more source

Precision Electroweak Tests of the Standard Model

, 2004
The study of electron-positron collisions at LEP, together with additional measurements from other experiments, in particular those at SLC and at the Tevatron, has allowed for tests of the electroweak Standard Model with unprecedented accuracy. We review
Altarelli, Altarelli, Appelquist, Burkhardt, Chanowitz, Choudhury, Davidson, Guido Altarelli, Hambye, Martin W. Grünewald, Passarino, Passarino, Passarino   +12 more
core   +1 more source

Studies of Parity Violation in Atoms

Annalen der Physik, Volume 537, Issue 2, February 2025.
This article provides an overview of atomic parity violation (APV), emphasizing its role in testing the Standard Model and probing new physics. The review discusses manifestations of APV, including nuclear‐spin‐independent and dependent effects, and explores isotopic comparison as a method for precision measurements.
Stefanos Nanos, Iraklis Papigkiotis, Dionysios Antypas   +2 more
wiley   +1 more source

Oblique corrections in general dark U(1) models

Journal of High Energy Physics
We investigate the impact of dark Abelian gauge bosons on the electroweak precision measurements at the one-loop level. The dark gauge boson couples to the standard model fermions generally via two kinds of mixing with the electroweak gauge bosons: the ...
Cheng-Wei Chiang, Kazuki Enomoto
doaj   +1 more source

Precision measurements in electroweak physics and supersymmetry

Nuclear Physics B, 1990
Abstract In the minimal supersymmetric standard model we analyse the radiative corrections to M W , the p -parameter and the lepton asymmetries at the Z 0 pole. We show how the radiative corrections of the standard model with a light Higgs give a lower bound on the corrections in the supersymmetric model.
R. Barbieri, M. Frigeni, F. Giuliani, H.E. Haber   +3 more
openaire   +1 more source

Notes on Characterizations of 2d Rational SCFTs: Algebraicity, Mirror Symmetry, and Complex Multiplication

Fortschritte der Physik, Volume 73, Issue 1-2, February 2025.
Abstract S. Gukov and C. Vafa proposed a characterization of rational N=(1,1)$N=(1,1)$ superconformal field theories (SCFTs) in 1+1$1+1$ dimensions with Ricci‐flat Kähler target spaces in terms of the Hodge structure of the target space, extending an earlier observation by G. Moore.
Abhiram Kidambi, Masaki Okada, Taizan Watari   +2 more
wiley   +1 more source

A case study of SMEFT O 1 / Λ 4 $$ \mathcal{O}\left(1/{\Lambda}^4\right) $$ effects in diboson processes: pp → W ±(ℓ ± ν)γ

Journal of High Energy Physics
In this paper we explore pp → W ± (ℓ ± ν)γ to O 1 / Λ 4 $$ \mathcal{O}\left(1/{\Lambda}^4\right) $$ in the SMEFT expansion. Calculations to this order are necessary to properly capture SMEFT contributions that grow with energy, as the interference ...
Adam Martin
doaj   +1 more source

Complementary constraints on Zb b ¯ $$ Zb\overline{b} $$ couplings at the LHC

Journal of High Energy Physics, 2023
We propose a new strategy to probe the Z boson couplings to bottom and charm quarks at the LHC. In this work we mainly focus on the case of bottom quarks. Here, the Z boson is produced in association with two b-jets and decays to electrons or muons.
Fady Bishara, Zhuoni Qian
doaj   +1 more source

Electroweak precision tests in high-energy diboson processes [PDF]

, 2017
A bstractA promising avenue to perform precision tests of the SM at the LHC is to measure differential cross-sections at high invariant mass, exploiting in this way the growth with the energy of the corrections induced by heavy new physics.
R. Franceschini, G. Panico, A. Pomarol, F. Riva, A. Wulzer   +4 more
semanticscholar   +1 more source