Results 71 to 80 of about 22,575 (172)

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

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

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

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

The Strong Coupling Constant from Hadron Structure Phenomenology

, 2012
We present recent developments on the role of the running coupling constant at the intersection of perturbative and nonperturbative QCD. A number of experiments show a smooth transition from small to large scales given by the four-momentum transfer in ...
Courtoy, A., Liuti, Simonetta
core   +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

Phenomenology of IR-renormalons in inclusive processes

, 1997
We have compared the existing experimental data on the leading power corrections to the structure functions $F_2(x,Q^2), F_3(x,Q^2)$, and $F_L(x,Q^2)$ with the IR-renormalon model predictions for higher-twist contributions.
Mankiewicz, L., Maul, M., Schäfer, A., Stein, E.   +3 more
core   +1 more source

Non-perturbative effects in Higgs boson decays to electroweak vector bosons and photons

Journal of High Energy Physics
We estimate the magnitude of the leading non-perturbative QCD corrections to the decays of the Higgs boson to the γZ and γγ final states. These corrections originate from the light-quark contributions to such decays.
Alexander Khodjamirian, Kirill Melnikov, Arkady Vainshtein   +2 more
doaj   +1 more source

Nuclear Matter Properties of the Modified Quark Meson Coupling Model

, 1997
We explore in more detail the modified quark meson coupling (MQMC) model in nuclear matter. Based on previous studies two different functional forms for the density dependence of the bag constant are discussed.
Adami, Aguirre, Alkofer, Arneodo, Asakawa, B.K. Jennings, Blunden, Bodmer, Boguta, Brown, Brown, Brown, Ebert, Fleck, Furnstahl, Furnstahl, Furnstahl, Furnstahl, Guichon, Guichon, Guichon, H. Müller, Jin, Jin, Li, Lutz, Müller, Nambu, Nambu, Reinhard, Reinhard, Saito, Saito, Saito, Saito, Saito, Saito, Saito, Schechter, Sharma, Song, Soyeur, Thomas, Walecka   +43 more
core   +2 more sources

Progress in the Determination of the Partonic Structure of the Proton

, 2013
We review the current state of the art in the determination of the parton substructure of the nucleon, as expressed in terms of parton distribution functions (PDFs), and probed in high-energy lepton-hadron and hadron-hadron collisions, and we assess ...
Forte, Stefano, Watt, Graeme
core   +1 more source