Results 61 to 70 of about 7,425,422 (182)

Two body non-leptonic D 0 decays from LCSR and implications for $${\Delta a}_{{\text{CP}}}^{{\text{dir}}}$$

Journal of High Energy Physics
Motivated by the recent measurements of CP violating effects in singly Cabibbo suppressed D 0 decays, we revisit the theoretical predictions of these channels. Using up-to-date values for the decay constants and form factors, we find already within naive
Alexander Lenz, Maria Laura Piscopo, Aleksey V. Rusov   +2 more
doaj   +1 more source

Full treatment of the thrust distribution in single inclusive e + e − → h X processes

Journal of High Energy Physics, 2023
Extending the transverse momentum dependent factorization to thrust dependent observables entails a series of difficulties, ultimately associated to the behavior of soft radiation.
M. Boglione, A. Simonelli
doaj   +1 more source

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

Advances 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, Poonam Jain, Pargin Bangotra, Vinod Kumar, D. V. Singh, S. K. Rajouria, Bhartendu K. Singh   +6 more
wiley   +1 more source

Baryon wave functions from lattice QCD [PDF]

, 2011
We describe an ongoing project by the QCDSF collaboration to calculate baryon wave functions at small inter-quark separation using lattice QCD. Preliminary results are presented for the wave functions at the origin and momentum fractions carried by the ...
QCDSF Collaboration, P. Wein, Zanotti, James M., Wein, P., Schäfer, Andreas, Stüben, Hirnnerk, Nakamura, Yoshifumi, Rakow, Paul E. L, D. Pleiter, J. M. Zanotti, H. Stüben, M. Göckeler, Pleiter, Dirk, Schiel, R., QCDSF, Colaboration, R. Horsley, A. Schäfer, V. M. Braun, P. E. L. Rakow, Braun, Vladimir M., Y. Nakamura, R. Schiel, G. Schierholz, Göckeler, Meinulf, Horsley, Roger, Schierholz, Gerrit   +25 more
core   +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

Top Quark Flavor Changing Couplings at a Muon Collider

Advances in High Energy Physics, Volume 2024, Issue 1, 2024.
There is growing interest in the development of a muon collider that would make it possible to produce lepton collisions at energies of several TeV. Among others, there can be significant contributions to electroweak gauge boson, Higgs boson, and top quark physics.
Daniel Ake, Antonio O. Bouzas, F. Larios, Roelof Bijker   +3 more
wiley   +1 more source

Parton distributions confront LHC Run II data: a quantitative appraisal

Journal of High Energy Physics
We present a systematic comparison of theoretical predictions and various high-precision experimental measurements, specifically of differential cross sections performed by the LHC run II for Drell-Yan gauge boson, top-quark pair, single-inclusive jet ...
Amedeo Chiefa, Mark N. Costantini, Juan Cruz-Martinez, Emanuele R. Nocera, Tanjona R. Rabemananjara, Juan Rojo, Tanishq Sharma, Roy Stegeman, Maria Ubiali   +8 more
doaj   +1 more source

q‐Deformed Glueball Spectrum in AdS/QCD Correspondence

Advances in High Energy Physics, Volume 2024, Issue 1, 2024.
This work presents the application of the q‐algebra in the glueball spectrum. This algebra is implemented through Jackson’s derivatives in a Schrödinger‐like equation resulting from the gravity fluctuations around the braneworld scenario in five dimensions.
Fabiano F. Santos, F. A. Brito, Shi Hai Dong   +2 more
wiley   +1 more source

Hyperoptimisation algorithm for the next generation of PDF determinations: ensemble regression with an unbiased selection model

Journal of High Energy Physics
We present a new automated procedure for selecting fitting methodologies in the determination of parton distribution functions (PDFs), based on a hyperoptimisation algorithm using ensemble regression.
Juan M. Cruz-Martinez, Tommaso Giani, Tanjona R. Rabemananjara   +2 more
doaj   +1 more source

Schwinger-Dyson equations in QED and QCD the calculation of fermion-antifermion condensates [PDF]

, 2007
We present non-perturbative solutions for the fermion and boson propagators of QED in both three- and four-dimensions, and QCD. In doing so, we solve the coupled system of Schwinger-Dyson equations numerically in Euclidean space, investigating ...
Williams, Richard
core