Zobrazeno 1 - 10
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pro vyhledávání: '"hard scattering"'
We study high-energy scattering at fixed angle in the planar limit of non-Abelian gauge field theories from type IIB superstring theory scattering amplitudes. Firstly, we consider four-glueball scattering described in terms of the four-dilaton string
Externí odkaz:
http://arxiv.org/abs/2412.08425
The conventional wisdom in dealing with electromagnetic transition between heavy quarkonia is the multipole expansion, when the emitted photon has a typical energy of order quarkonium binding energy. Nevertheless, in the case when the energy carried
Externí odkaz:
http://arxiv.org/abs/2402.19413
Akademický článek
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We consider the radiation of a soft gluon ($g$) and a soft quark-antiquark ($q{\bar q}$) pair in QCD hard scattering. In the soft limit the scattering amplitude has a singular behaviour that is factorized and controlled by a soft current, which has a
Externí odkaz:
http://arxiv.org/abs/2210.09397
Collisions of small systems at RHIC exhibit a significant suppression of the nuclear modification factor $R_{xA}$ of jets and high momentum neutral pions in events with large event activity. This suppression is accompanied by an enhancement of $R_{xA
Externí odkaz:
http://arxiv.org/abs/2212.09425
Autor:
Colferai, Dimitri
We consider the radiation of three soft gluons in a generic process for multiparton hard scattering in QCD. In the soft limit the corresponding scattering amplitude has a singular behaviour that is factorized and controlled by a colorful soft current
Externí odkaz:
http://arxiv.org/abs/2207.01717
Autor:
Boubendir, Yassine, Ecevit, Fatih
We consider the two-dimensional high-frequency plane wave scattering problem in the exterior of a finite collection of disjoint, compact, smooth, strictly convex obstacles with Neumann boundary conditions. Using integral equation formulations, we det
Externí odkaz:
http://arxiv.org/abs/2208.06257
Autor:
Saragnese, Marco
With the increasing experimental precision available at colliders, higher-order perturbative calculations are required to reduce the theory uncertainty in order to extract crucial QCD parameters, such as the strong coupling constant, to the required
Externí odkaz:
http://arxiv.org/abs/2208.06145
Deep neural networks have rightfully won the place of one of the most accurate analysis tools in high energy physics. In this paper we will cover several methods of improving the performance of a deep neural network in a classification task in an ins
Externí odkaz:
http://arxiv.org/abs/2109.08520
Autor:
Moch, S., Van Thurenhout, S.
Publikováno v:
Nucl.Phys. B971 (2021) 115536
We calculate non-singlet quark operator matrix elements of deep-inelastic scattering in the chiral limit including operators with total derivatives. This extends previous calculations with zero-momentum transfer through the operator vertex which prov
Externí odkaz:
http://arxiv.org/abs/2107.02470