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We compute the leading corrections to the differential cross section for top-pair production via gluon fusion due to dimension-six operators at leading order in QCD. The Standard Model fields are assumed to couple only weakly to the…

High Energy Physics - Phenomenology · Physics 2021-11-17 Christoph Müller

We present updated predictions for the total cross section for Higgs boson production by gluon--gluon fusion in hadron collisions. Our calculation includes the most advanced theoretical information available at present for this observable:…

High Energy Physics - Phenomenology · Physics 2009-11-19 D. de Florian , M. Grazzini

A strong laser field and the Coulomb field of a nucleus can produce e^{+}e^{-} pairs. It is shown for the first time that there is a large probability that electrons and positrons created in this process collide after one or several…

Atomic Physics · Physics 2008-11-26 M. Yu. Kuchiev

The search for charged Higgs bosons, which are predicted in supersymmetric theories, is difficult at hadron colliders if the mass is large. In this paper we present the theoretical set-up for the production of charged Higgs boson pairs at…

High Energy Physics - Phenomenology · Physics 2009-10-30 A. Krause , T. Plehn , M. Spira , P. M. Zerwas

We compute the production rate of lepton pair by static photons at finite temperature at two-loop order. We treat the infrared region of the gluon phase space carefully by using a hard thermal loop gluon propagator. The result is free of…

High Energy Physics - Phenomenology · Physics 2009-11-10 P. Aurenche , M. E. Carrington , N. Marchal

The STAR experiment at the Relativistic Heavy-Ion Collider has performed measurements of high transverse momentum particle production in ultra-relativistic heavy-ion collisions. High-pT hadrons are generated from hard parton scatterings…

Nuclear Experiment · Physics 2007-05-23 A. Mischke

We calculate the cross sections for the production of one and more electron-positron pairs due to the strong electromagnetic fields in relativistic heavy ion collisions. Using the generating functional of fermions in an external field we…

Nuclear Theory · Physics 2009-10-30 Adrian Alscher , Kai Hencken , Dirk Trautmann , Gerhard Baur

The Higgs boson is produced at the LHC through gluon fusion at roughly the Standard Model rate. New colored fermions, which can contribute to $gg\rightarrow h$, must have vector-like interactions in order not to be in conflict with the…

High Energy Physics - Phenomenology · Physics 2014-11-06 Chien-Yi Chen , S. Dawson , I. M. Lewis

We study the production of two electro-weak vector bosons in association with a jet via gluon fusion. In particular we consider the production of $\gamma Zg$, $ZZg$ and $W^{+}W^{-}g$ at hadron colliders and compute their cross-sections.…

High Energy Physics - Phenomenology · Physics 2013-05-30 Pankaj Agrawal , Ambresh Shivaji

At high center of mass energies, hadroproduction of heavy quarks can be expressed in terms of the same color dipole cross section as low Bjorken-x deep inelastic scattering. We show analytically that at leading order, the dipole formulation…

High Energy Physics - Phenomenology · Physics 2011-01-25 J. Raufeisen , J. -C. Peng

The conventional description of heavy-flavour hadron production in pp collisions is based on a factorisation approach, assuming universal fragmentation functions among collision systems. Recent results on heavy-flavour baryon measurements…

High Energy Physics - Experiment · Physics 2021-09-21 Mattia Faggin

We consider constraints on long-lived charged scalar leptons \tilde{l}^\pm in supersymmetric models, where gravitino is the lightest superparticle. We study the decay and hadronization processes of \tilde{l}^\pm. We also take into account…

High Energy Physics - Phenomenology · Physics 2008-11-26 Masahiro Kawasaki , Kazunori Kohri , Takeo Moroi

The formation of hadrons is a fundamental process in nature that can be investigated at particle colliders. As several recent findings demonstrate, with $\mathrm{e^+e^-}$ collisions as a "vacuum-like" reference at one extreme, and central…

High Energy Physics - Phenomenology · Physics 2025-01-13 J. Altmann , A. Dubla , V. Greco , A. Rossi , P. Skands

At $e^+e^-$ and $ep$ colliders, the large fluxes of almost on-shell photons accompanying the lepton beams lead to the photoproduction of jets. As the centre-of-mass energy is increased, regions of smaller $x$ in the parton densities are…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. M. Butterworth , J. R. Forshaw , M. H. Seymour , J. K. Storrow , R. Walker

In this paper we study the electroproduction of open heavy flavor $D$- and $B$-mesons in the kinematics of future $ep$ colliders, such as the Electron Ion Collider (EIC), the Large Hadron electron Collider (LHeC) and the Future Circular…

High Energy Physics - Phenomenology · Physics 2021-08-04 Marat Siddikov , Iván Schmidt

We study the photoproduction process of dileptons in heavy ion collision at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energys. The equivalent photon approximation, which equates the electromagnetic field of…

High Energy Physics - Phenomenology · Physics 2024-04-16 Gongming Yu , Xinyu Li , Xinghang Zhang , Zhongxia Zhao , Haitao Yang

The charged current production of long-lived heavy neutrinos at the LHC can use a prompt charged lepton for triggering the measurement of the process. However, in order to fully characterize the heavy neutrino interactions, it is necessary…

High Energy Physics - Phenomenology · Physics 2021-09-07 J. Jones-Pérez , J. Masias , J. D. Ruiz-Álvarez

We reevaluate electron-positron pair production from electromagnetic interactions of muons in transit through materials. Our approach, through the use of structure functions for inelastic and elastic scattering and including hadronic…

High Energy Physics - Phenomenology · Physics 2009-11-06 A. Bulmahn , M. H. Reno

We propose a holographic model for dilepton production in proton-proton collisions based on the exchange of vector mesons. The holographic hard wall model is used to describe the dynamics and interactions of vector mesons and baryons. We…

High Energy Physics - Theory · Physics 2011-07-06 C. A. Ballon Bayona , Henrique Boschi-Filho , Nelson R. F. Braga

We study the production of a charged Higgs boson in association with a W boson at the CERN Large Hadron Collider in the context of the minimal supersymmetric extension of the standard model. This production mechanism is particularly…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. A. Barrientos Bendezu , B. A. Kniehl