Results 91 to 100 of about 32,795 (203)

Local analytic sector subtraction for initial- and final-state radiation at NLO in massless QCD

Journal of High Energy Physics, 2022
Within the framework of local analytic sector subtraction, we present the subtraction of next-to-leading-order QCD singularities for processes featuring massless coloured particles in the initial as well as in the final state.
Gloria Bertolotti, Paolo Torrielli, Sandro Uccirati, Marco Zaro   +3 more
doaj   +1 more source

QCD at non-zero density and phenomenology

Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018), 2019
In the last few years, numerical simulations of QCD on the lattice have reached a new level of accuracy. A wide range of thermodynamic observables is now available in the continuum limit and for physical quark masses.
C. Ratti
semanticscholar   +1 more source

Non-factorisable contributions of strong-penguin operators in Λ b → Λℓ + ℓ − decays

Journal of High Energy Physics
We investigate for the first time a certain class of non-factorisable contributions of the four-quark operators O $$ \mathcal{O} $$ 3−6 in the weak effective Hamiltonian to the Λ b → Λℓ + ℓ − decay amplitude.
Thorsten Feldmann, Nico Gubernari
doaj   +1 more source

Complete collection of one-loop triple-collinear splitting operators for dimensionally-regulated QCD

Journal of High Energy Physics, 2022
We provide results for the one-loop triple-collinear color/spin-space splitting operators for the five possible processes, q → qq ′ q ¯ ′ $$ {qq}^{\prime }{\overline{q}}^{\prime } $$ , q → qq q ¯ $$ qq\overline{q} $$ , q → qgg, g → gq q ¯ $$ gq\overline ...
Michał Czakon, Sebastian Sapeta
doaj   +1 more source

High energy DVCS on a photon and related meson exclusive production [PDF]

, 2007
In this work we estimate the differential cross section for the high energy deeply virtual Compton scattering on a photon target within the QCD dipole-dipole scattering formalism.
Magno V. T. Machado, N. Timneanu, N. N. Nikolaev, V. P. Goncalves   +3 more
core   +1 more source

Possible Light U(1) Gauge Boson Coupled to Baryon Number

, 1994
We discuss the phenomenology of a light U(1) gauge boson, $\gamma_B$, that couples only to baryon number. We assume that the new U(1) gauge symmetry is spontaneously broken and that the $\gamma_B$ mass is smaller than $m_Z$.
Carone, Christopher D., Murayama, Hitoshi   +1 more
core   +1 more source

Measuring quantum discord at the LHC

Journal of High Energy Physics
There has been an increasing interest in exploring quantities associated with quantum information at colliders. We perform a detailed analysis describing how to measure the quantum discord in the top anti-top quantum state at the Large Hadron Collider ...
Tao Han, Matthew Low, Navin McGinnis, Shufang Su   +3 more
doaj   +1 more source

Reconciling the contour-improved and fixed-order approaches for τ hadronic spectral moments. Part I. Renormalon-free gluon condensate scheme

Journal of High Energy Physics, 2022
We propose a simple and easy-to-implement scheme for a renormalon-free gluon condensate (GC) matrix element, which is analogous to implementations of short-distance heavy-quark mass renormalization schemes existing in the literature already for a long ...
Miguel A. Benitez-Rathgeb, Diogo Boito, André H. Hoang, Matthias Jamin   +3 more
doaj   +1 more source

Local vs. nonlocal entanglement in top-quark pairs at the LHC

Journal of High Energy Physics
We show that the entanglement observed in top-antitop quark spin states at the LHC is local in the energy region close to the production threshold. In contrast, nonlocal entanglement is observed in the central boosted region defined by a top-quark pair ...
Marco Fabbrichesi, Roberto Floreanini, Luca Marzola   +2 more
doaj   +1 more source

Resummation of threshold logarithms in deeply-virtual Compton scattering

Journal of High Energy Physics, 2023
I derive an all-order resummation formula for the logarithmically enhanced contributions proportional to α s n x ± ξ $$ \frac{\alpha_s^n}{x\pm \xi } $$ log ξ ± x 2 ξ k $$ {\left(\frac{\xi \pm x}{2\xi}\right)}^k $$ in the quark coefficient function of ...
J. Schoenleber
doaj   +1 more source