Results 91 to 100 of about 217,289 (236)

Impact of background effects on the inclusive V cb determination

open access: yesJournal of High Energy Physics, 2021
The determination of the CKM element V cb from inclusive semileptonic b → cℓ ν ¯ $$ \overline{\nu} $$ decays has reached a high precision thanks to a combination of theoretical and experimental efforts.
Thomas Mannel   +2 more
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

Joint two-dimensional resummation in q T and 0-jettiness at NNLL

open access: yesJournal of High Energy Physics, 2019
We consider Drell-Yan production pp → Z/γ ∗ → ℓ + ℓ − with the simultaneous measurement of the Z-boson transverse momentum q T and 0-jettiness T 0 $$ {\mathcal{T}}_0 $$ .
Gillian Lustermans   +3 more
doaj   +1 more source

High Energy QCD and the Large Nc Limit

open access: yes, 2002
We review recent progress in understanding QCD at high energies and the role played in it by the large Nc limit. We discuss unitarization of total hadronic cross sections and saturation of structure functions at high energies.Comment: 20 pages, 8 figures,
Kovchegov, Yuri V.
core   +2 more sources

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

Extraction of the strong coupling α s(mZ) from a combined NNLO analysis of inclusive electroweak boson cross sections at hadron colliders

open access: yesJournal of High Energy Physics, 2020
The inclusive cross sections of W+, W − , and Z boson production from 34 different measurements performed in proton-(anti)proton collisions at center-of-mass energies s $$ \sqrt{s} $$ = 1.8–13 TeV, are compared to perturbative QCD calculations at next-to-
David d’Enterria, Andres Poldaru
doaj   +1 more source

Supernova limits on QCD axionlike particles [PDF]

open access: yesPhysical Review D
In this paper, we explore the phenomenology of massive axionlike particles (ALPs) coupled to quarks and gluons, dubbed “QCD ALPs,” with an emphasis on the associated low-energy observables.
A. Lella   +3 more
semanticscholar   +1 more source

Role of Time‐Varying Magnetic Field on QGP Equation of State

open access: yesAdvances in High Energy Physics, Volume 2024, Issue 1, 2024.
The phase diagram of quantum chromodynamics (QCD) and its associated thermodynamic properties of quark‐gluon plasma (QGP) are studied in the presence of time‐dependent magnetic field. The study plays a pivotal role in the field of cosmology, astrophysics, and heavy‐ion collisions. In order to explore the structure of quark‐gluon plasma to deal with the
Yogesh Kumar   +6 more
wiley   +1 more source

On phase-space integrals with Heaviside functions

open access: yesJournal of High Energy Physics, 2022
We discuss peculiarities that arise in the computation of real-emission contributions to observables that contain Heaviside functions. A prominent example of such a case is the zero-jettiness soft function in SCET, whose calculation at next-to-next-to ...
Daniel Baranowski   +3 more
doaj   +1 more source

Phenomenology Of The Holographic Soft-Wall Model Of QCD With "Reversed" Dilaton

open access: yes, 2010
We study the phenomenology of the recently proposed modified version of the Soft-Wall model of holographic QCD with a negative dilaton profile. We investigate vector and scalar mesons, evaluating mass spectra, decay constants and two-point correlation ...
Nicotri, Stefano
core   +1 more source

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