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The impact of Next-to-Leading Order (NLO) QCD corrections to the differential distributions of J/psi and Upsilon mesons produced inclusively in gamma-gamma collisions is discussed for the kinematical conditions of LEP II for DELPHI and at…

High Energy Physics - Phenomenology · Physics 2023-12-08 Yelyzaveta Yedelkina , Jean-Philippe Lansberg , Maxim Nefedov

STAR has measured a variety of strange particle species in p + p collisions at $\sqrt{s}$ = 200 GeV. These high statistics data are ideal for comparing to existing leading- and next-to-leading order perturbative QCD (pQCD) models.…

High Energy Physics - Experiment · Physics 2019-08-13 Mark Heinz

We investigate the next-to-next-to-leading order (NNLO) QCD radiative corrections to the pion electromagnetic form factor with large momentum transfer. We explicitly verify the validity of the collinear factorization to two-loop order for…

High Energy Physics - Phenomenology · Physics 2024-08-01 Long-Bin Chen , Wen Chen , Feng Feng , Yu Jia

The leading-order perturbative QCD (pQCD) predictions to nucleon electromagnetic form factors were first made in late 70s. In this Letter for the first time we accomplish the calculation of the next-to-leading-order (NLO) QCD corrections to…

High Energy Physics - Phenomenology · Physics 2025-09-03 Long-Bin Chen , Wen Chen , Feng Feng , Siwei Hu , Yu Jia

The precision frontier in collider physics is being pushed at impressive speed, from both the experimental and the theoretical side. The aim of this review is to give an overview of recent developments in precision calculations within the…

High Energy Physics - Phenomenology · Physics 2021-06-14 Gudrun Heinrich

The next generation of $e^+e^-$-colliders will offer a possibility of clean testing of QCD dynamics in the Regge limit. Recent progress in the theoretical description of exclusive processes permits for many of them a consistent use of the…

High Energy Physics - Phenomenology · Physics 2016-09-06 B. Pire , L. Szymanowski , S. Wallon

Radiative effects in semi-inclusive hadron leptoproduction of unpolarized particles are calculated within the leading order approximation. The contributions of the infrared-free sum of the effects of real and virtual photon emission as well…

High Energy Physics - Phenomenology · Physics 2024-04-30 Igor Akushevich , Alexander Ilyichev , Stanislav Srednyak

Within a class of models in which lepton flavor violation is induced dominantly by scalar particle exchanges, we estimate the $\mu \to e$ conversion rate in several nuclei. We include next-to-leading order (NLO) terms in the one- and…

High Energy Physics - Phenomenology · Physics 2022-05-26 Vincenzo Cirigliano , Kaori Fuyuto , Michael J. Ramsey-Musolf , Evan Rule

Soft and collinear radiation in collider processes can be described in a universal way, that is independent of the underlying process. Recent years have seen a number of approaches for probing whether radiation beyond the leading soft…

High Energy Physics - Phenomenology · Physics 2023-08-25 Melissa van Beekveld , Abhinava Danish , Eric Laenen , Sourav Pal , Anurag Tripathi , Chris D. White

This paper is the first attempt to build CGC/saturation model based on the next-to-leading order corrections to linear and non-linear evolution in QCD. We assume that the renormalization scale is the saturation momentum and found that the…

High Energy Physics - Phenomenology · Physics 2016-12-28 Carlos Contreras , Eugene Levin , Rodrigo Meneses , Irina Potashnikova

We have calculated the leading-twist next-to-leading order (NLO), i.e., O(alpha_s), correction to the light-cone sum-rules prediction for the electromagnetic form factors of the nucleon. We have used the Ioffe nucleon interpolation current…

High Energy Physics - Phenomenology · Physics 2009-02-19 K. Passek-Kumericki , G. Peters

Within the Color Glass Condensate effective theory, we reconsider the next-to-leading order (NLO) calculation of the single inclusive particle production at forward rapidities in proton-nucleus collisions at high energy. Focusing on quark…

High Energy Physics - Phenomenology · Physics 2017-02-01 E. Iancu , A. H. Mueller , D. N. Triantafyllopoulos

The Standard Model prediction for muon-electron scattering beyond leading order requires the inclusion of QCD contributions which cannot be computed perturbatively. At next-to- and next-to-next-to-leading order, they arise from one- and…

High Energy Physics - Phenomenology · Physics 2019-05-29 Matteo Fael , Massimo Passera

Exclusive production of light vector mesons in deep inelastic scattering is calculated at next-to-leading order in the dipole picture in the limit of high photon virtuality. The resulting expression is free of any divergences and suitable…

High Energy Physics - Phenomenology · Physics 2022-09-20 Heikki Mäntysaari , Jani Penttala

We evaluate the next-to-next-to-leading order corrections to the hard-scattering amplitude of the photon-to-pion transition form factor. Our approach is based on the predictive power of the conformal operator product expansion, which is…

High Energy Physics - Phenomenology · Physics 2009-11-07 B. Melic , D. Müller , K. Passek-Kumericki

We propose a new criterium for saturation of the density of partons both in nucleons and nuclei. It is applicable to any multiple scattering model which would be used to compute the number of strings exchanged in $ep$ and $eA$ collisions.…

High Energy Physics - Phenomenology · Physics 2009-10-31 N. Armesto , C. A. Salgado

We discuss recent developments towards next-to-leading order (NLO) accuracy in the dipole picture. We review recent NLO results for exclusive vector meson production and diffractive structure functions, and discuss how it is becoming…

High Energy Physics - Phenomenology · Physics 2023-03-29 Heikki Mäntysaari

Nuclear saturation and the symmetry energy are key properties of low-energy nuclear physics that depend on fine details of the nuclear interaction. The equation-of-state around saturation is also an important anchor for extrapolations to…

Nuclear Theory · Physics 2024-06-18 W. G. Jiang , C. Forssén , T. Djärv , G. Hagen

The exclusive vector meson production cross section is one of the most promising observables to probe the high energy regime of the QCD dynamics. In particular, the squared momentum transfer ($t$) distributions are an important source of…

High Energy Physics - Phenomenology · Physics 2017-04-05 V. P. Goncalves , F. S. Navarra , D. Spiering

The initial conditions in high energy nucleus-nucleus collisions are determined by the small momentum fraction part of the nuclear wavefunction. This is the regime of gluon saturation and the most direct way to experimentally study it would…

High Energy Physics - Phenomenology · Physics 2009-11-18 T. Lappi