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We study the transverse momentum dependent (TMD) evolution of the Collins azimuthal asymmetries in $e^+e^-$ annihilations and semi-inclusive hadron production in deep inelastic scattering (SIDIS) processes. All the relevant coefficients are…

High Energy Physics - Phenomenology · Physics 2016-01-20 Zhong-Bo Kang , Alexei Prokudin , Peng Sun , Feng Yuan

We present a summary of a recent workshop held at Duke University on Partonic Transverse Momentum in Hadrons: Quark Spin-Orbit Correlations and Quark-Gluon Interactions. The transverse momentum dependent parton distribution functions…

Differential measurements of the semi-inclusive deep inelastic scattering (SIDIS) process with polarized beams provide important information on the three-dimensional structure of hadrons. Among the various observables are azimuthal…

High Energy Physics - Phenomenology · Physics 2023-06-21 Markus A. Ebert , Anjie Gao , Iain W. Stewart

The transverse momentum flow inside jets is a sensitive measure of internal jet structure. For the current jets in deep inelastic scattering this jet shape measure is determined at order alpha_s^2, i.e. with up to three partons inside a…

High Energy Physics - Phenomenology · Physics 2014-11-17 N. Kauer , L. Reina , J. Repond , D. Zeppenfeld

We consider semi-inclusive deep inelastic scattering (SIDIS) and Drell-Yan events within transverse momentum dependent (TMD) factorization. Based on the simultaneous fit of multiple data points, we extract the unpolarized TMD distributions…

High Energy Physics - Phenomenology · Physics 2020-07-15 Ignazio Scimemi , Alexey Vladimirov

We explore the potential of jet observables in charged-current deep-inelastic scattering (CC DIS) events at the future Electron-Ion Collider (EIC). Tagging jets with a recoiling neutrino, which can be identified by the event's missing…

High Energy Physics - Phenomenology · Physics 2023-06-01 Miguel Arratia , Zhong-Bo Kang , Sebouh J. Paul , Alexei Prokudin , Felix Ringer , Fanyi Zhao

We calculate, in a model, the beam spin asymmetry in semi-inclusive jet production in deep inelastic scattering. This twist-3, $T$-odd observable is non-zero due to final state strong interactions. With reasonable choices for the…

High Energy Physics - Phenomenology · Physics 2014-11-18 Andrei V. Afanasev , Carl E. Carlson

We introduce the transverse momentum dependent fragmenting jet function (TMDFJF), which appears in factorization theorems for cross sections for jets with an identified hadron. These are functions of $z$, the hadron's longitudinal momentum…

High Energy Physics - Phenomenology · Physics 2017-06-09 Reggie Bain , Yiannis Makris , Thomas Mehen

Charged-current deep inelastic scattering plays a significant role in determining parton distribution functions with flavour separation.In this work, we present a systematic calculation of the charged-current semi-inclusive deep inelastic…

High Energy Physics - Phenomenology · Physics 2025-07-31 Weihua Yang , Jing Zhao , Zhe Zhang

A simple model for medium modification of the jet function can be used to extract the jet energy loss distribution through a parameterized form. We carry out a comprehensive Bayesian analysis of the world data on single inclusive jet…

High Energy Physics - Phenomenology · Physics 2023-10-06 Jordan Wu , Weiyao Ke , Xin-Nian Wang

We study the process dependence of the Sivers function by considering the impact of color-gauge invariant initial and final state interactions on transverse spin asymmetries in proton-proton reactions within the framework of the transverse…

High Energy Physics - Phenomenology · Physics 2011-10-27 Umberto D'Alesio , Leonard Gamberg , Zhong-Bo Kang , Francesco Murgia , Cristian Pisano

The cross section for semi-inclusive deep inelastic scattering can be decomposed in terms of 18 structure functions. At low transverse momentum of the detected hadron, the structure functions can be expressed in terms of…

High Energy Physics - Phenomenology · Physics 2008-11-26 Alessandro Bacchetta

We study the event shape variables, transverse energy energy correlation TEEC $(\cos \phi)$ and its asymmetry ATEEC $(\cos \phi)$ in deep inelastic scattering (DIS) at the electron-proton collider HERA, where $\phi$ is the angle between two…

High Energy Physics - Phenomenology · Physics 2020-12-30 Ahmed Ali , Gang Li , Wei Wang , Zhi-Peng Xing

A precision measurement of jet cross sections in neutral current deep-inelastic scattering for photon virtualities $5.5<Q^2<80\,{\rm GeV}^2$ and inelasticities $0.2<y<0.6$ is presented, using data taken with the H1 detector at HERA,…

High Energy Physics - Experiment · Physics 2021-06-16 The H1 collaboration

Hadronization, a nonperturbative process, cannot be calculated from first principles. It can be investigated either by using phenomenological models or by examining the behavior of produced hadrons or through fragmentation functions. These…

High Energy Physics - Phenomenology · Physics 2026-01-01 Weihua Yang , Xing-hua Yang , Zhe Zhang , Jing Zhao

This study is part of a project to investigate the transverse momentum dependence in parton distribution and fragmentation functions, analyzing (semi-)inclusive high-energy processes within a proper QCD framework. We calculate the…

High Energy Physics - Phenomenology · Physics 2014-09-26 Alessandro Bacchetta , Miguel G. Echevarria , Marco Radici , Andrea Signori

Semi-Inclusive Deep-Inelastic Scattering provides unique access to the three-dimensional momentum and spin structure of the proton, enabling precise studies of parton dynamics and hadronization in QCD. We present a transverse-momentum…

High Energy Physics - Phenomenology · Physics 2026-02-09 Jun Gao , Hai Tao Li , Hua Xing Zhu , Yu Jiao Zhu

In this paper, we explore the use of jet substructure as a way of probing phenomena which break the isotropic behavior of jets, such as jet propagation through an anisotropically flowing quark-gluon plasma or spin correlations. We introduce…

High Energy Physics - Phenomenology · Physics 2024-12-18 Weiyao Ke , John Terry , Ivan Vitev

The transverse broadening of jets produced in deep-inelastic scattering (DIS) off a large nucleus is studied in the collinear limit. A class of medium enhanced higher twist corrections are re-summed to calculate the transverse momentum…

Nuclear Theory · Physics 2008-11-26 A. Majumder , B. Müller

We provide a concise overview on transverse momentum dependent (TMD) parton distribution functions, their application to topical issues in high-energy physics phenomenology, and their theoretical connections with QCD resummation, evolution…