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Related papers: Collins-type Energy-Energy Correlators and Nucleon…

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We study particle correlations in high energy jets by comparing the measured energy-energy correlator (EEC) with that constructed from two individual energy flows with respect to the jet axis. This comparison demonstrates that genuine…

High Energy Physics - Phenomenology · Physics 2025-07-28 Wenbin Zhao , Volker Koch , Feng Yuan

The structure of nucleons is multidimensional and depends on the transverse momenta, spatial geometry, and polarization of the constituent partons. Such a structure can be studied using high-energy photons produced in ultraperipheral…

Nuclear Experiment · Physics 2023-09-07 CMS Collaboration

We investigate the nucleon tensor charge from current experiments by a combined analysis of the Collins asymmetries in two hadron production in $e^+e^-$ annihilations and semi-inclusive hadron production in deep inelastic scattering…

High Energy Physics - Phenomenology · Physics 2015-04-16 Zhong-Bo Kang , Alexei Prokudin , Peng Sun , Feng Yuan

We apply the transverse momentum dependent factorization formalism to investigate the transverse single spin dependent Collins asymmetry with a $\sin(\phi_h+\phi_s)$ modulation in the semi-inclusive production of Kaon meson in deep…

High Energy Physics - Phenomenology · Physics 2020-08-26 Shi-Chen Xue , Xiaoyu Wang , De-Min Li , Zhun Lu

We present an updated study of the Collins azimuthal asymmetries for pion-in-jet production in polarized $pp$ collisions. To this aim, we employ a recent extraction of the transversity and Collins fragmentation functions from semi-inclusive…

High Energy Physics - Phenomenology · Physics 2025-11-27 Umberto D'Alesio , Carlo Flore , Marco Zaccheddu

We investigate the collinear limit of the energy-energy correlator (EEC) in a heavy-ion context. First, we revisit the leading-logarithmic (LL) resummation of this observable in vacuum following a diagrammatic approach. We argue that this…

High Energy Physics - Phenomenology · Physics 2023-12-25 João Barata , Paul Caucal , Alba Soto-Ontoso , Robert Szafron

We present [1] the first simultaneous extraction of the transversity distribution and the Collins fragmentation function, obtained through a combined analysis of experimental data on azimuthal asymmetries in semi-inclusive deep inelastic…

High Energy Physics - Phenomenology · Physics 2007-07-10 M. Anselmino , M. Boglione , U. D'Alesio , A. Kotzinian , F. Murgia , A. Prokudin , C. Turk

We establish an approach to analyze the free hadron and transition (nonperturbative) regions of near-side energy-energy correlators (EECs) based on dihadron fragmentation functions (DiFFs). We introduce a (nonperturbative) function we call…

High Energy Physics - Phenomenology · Physics 2026-02-25 Zhong-Bo Kang , Andreas Metz , Daniel Pitonyak , Congyue Zhang

A generic jet-energy loss model that is coupled to state-of-the-art hydrodynamic fields and interpolates between a wide class of running coupling pQCD-based and AdS/CFT-inspired models is compared to recent data on the azimuthal and…

High Energy Physics - Phenomenology · Physics 2014-02-17 Barbara Betz , Miklos Gyulassy

Recent data on the azimuthal and transverse momentum dependence of high-pT>10 GeV pion nuclear modification factors in nuclear collisions at RHIC/BNL and LHC/CERN are analyzed in terms of a wide class of jet-energy loss models and a variety…

Nuclear Theory · Physics 2013-05-29 Barbara Betz , Miklos Gyulassy

Energy Correlators measure the energy deposited in multiple detectors as a function of the angles between the detectors. In this paper, we analytically compute the three particle correlator in the collinear limit in QCD for quark and gluon…

High Energy Physics - Phenomenology · Physics 2020-11-10 Hao Chen , Ming-Xing Luo , Ian Moult , Tong-Zhi Yang , Xiaoyuan Zhang , Hua Xing Zhu

We study the one-point energy correlator (OPEC) at both the back-to-back and collinear limits in electron-proton and electron-nucleus collisions. We provide the factorization formalism for the two types of OPEC and present phenomenological…

High Energy Physics - Phenomenology · Physics 2025-12-19 Yu Fu , Zhong-Bo Kang , Jani Penttala , Yiyu Zhou

We develop the theoretical framework needed to study the distribution of hadrons with general polarization inside jets, with and without transverse momentum measured with respect to the standard jet axis. The key development in this paper,…

High Energy Physics - Phenomenology · Physics 2020-09-14 Zhong-Bo Kang , Kyle Lee , Fanyi Zhao

The elastic energy loss encountered by jets produced in deep-inelastic scattering (DIS) off a large nucleus is studied in the collinear limit. In close analogy to the case of (non-radiative) transverse momentum broadening, which is…

Nuclear Theory · Physics 2009-11-06 A. Majumder

As a signal for the BFKL Pomeron in small-x deep inelastic $ep$ scattering, we calculate the azimuthal dependence of the inclusive cross section of forward jets relative to the outgoing electron. For not very large differences in rapidity…

High Energy Physics - Phenomenology · Physics 2014-11-17 J. Bartels , V. Del Duca , M. Wusthoff

The Collins function belongs to the class of the so-called time-reversal odd fragmentation functions. Being chiral-odd as well, it can serve as an important tool to observe the nucleon's transversity distribution in semi-inclusive DIS. Due…

High Energy Physics - Phenomenology · Physics 2009-11-07 A. Bacchetta , R. Kundu , A. Metz , P. J. Mulders

We use a new set of Collins functions to update a previous prediction on the azimuthal asymmetries of pion productions in semi-inclusive deep inelastic scattering (SIDIS) process on a transversely polarized nucleon target. We find that the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yang Huang , Jun She , Bo-Qiang Ma

It has been recently confirmed that the magnitude of the EMC effect measured in electron deep inelastic scattering is linearly related to the Short Range Correlation scaling factor obtained from electron inclusive scattering. By using a…

High Energy Physics - Phenomenology · Physics 2015-06-05 Carlos A. García Canal , Tatiana Tarutina , Vicente Vento

Predictions are made for single spin azimuthal asymmetries due to the Collins effect in pion production from semi-inclusive deeply inelastic scattering off transversely and longitudinally polarized targets for the HERMES and COMPASS…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. V. Efremov , K. Goeke , P. Schweitzer

In this letter we study the impact of the Electron-Ion Collider (EIC) on the phenomenological extraction of the tensor charge from a QCD global analysis of single transverse-spin asymmetries (SSAs). We generate EIC pseudo-data for the…

High Energy Physics - Phenomenology · Physics 2022-12-06 Leonard Gamberg , Zhong-Bo Kang , Daniel Pitonyak , Alexei Prokudin , Nobuo Sato , Ralf Seidl
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