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Forward Drell-Yan process at the LHC is a sensitive tool for investigating higher twist effects in QCD. The expansion of all Drell-Yan structure functions is performed assuming GBW saturation model and the saturation scale plays the role of…

High Energy Physics - Phenomenology · Physics 2015-06-23 Tomasz Stebel , Leszek Motyka , Mariusz Sadzikowski

Modified quark fragmentation functions in deeply inelastic $eA$ collisions and their QCD evolution equations are derived for the first time in the framework of multiple parton scattering. Induced radiation gives rise to additional terms in…

High Energy Physics - Phenomenology · Physics 2008-11-26 Xiaofeng Guo , Xin-Nian Wang

This is a review of the program we started in 1968 to understand and generalize Bjorken scaling and Feynman's parton model in a canonical quantum field theory. It is shown that the parton model proposed for deep inelastic electron…

High Energy Physics - Phenomenology · Physics 2015-06-22 Tung-Mow Yan , Sidney D. Drell

We present an extraction of unpolarized transverse-momentum-dependent parton distribution and fragmentation functions based on more than two thousands data points from several experiments for two different processes: semi-inclusive…

High Energy Physics - Phenomenology · Physics 2022-11-28 Alessandro Bacchetta , Valerio Bertone , Chiara Bissolotti , Giuseppe Bozzi , Matteo Cerutti , Fulvio Piacenza , Marco Radici , Andrea Signori

We investigate the information which could be obtained from Drell-Yan processes with sufficiently intense beams of charged kaons on isoscalar targets. It is found that combinations of $K^+$ and $K^-$ Drell-Yan measurements on isoscalar…

High Energy Physics - Phenomenology · Physics 2010-02-17 J. T. Londergan , G. Q. Liu , A. W. Thomas

We review ideas on the structure of the QCD vacuum which had served as motivation for the discussion of various non-standard QCD effects in high-energy reactions in articles from 1984 to 1995. These effects include, in particular,…

High Energy Physics - Phenomenology · Physics 2015-06-18 Otto Nachtmann

The off-shell behaviors of bound nucleons in deep inelastic lepton nucleus scattering are discussed in two scenarios with the basic constituents chosen to be baryon-mesons and quark-gluons respectively in light-cone formalism. It is found…

Nuclear Theory · Physics 2012-06-26 Bo-Qiang Ma

We consider the Drell-Yan processes $pp \to \ell \ell^{(\prime)}$ and $pp\to \ell \bar{\nu}$ at high-$p_T$ as probes of New Physics effects in semileptonic transitions. For this purpose, we describe the $2\to2$ scattering amplitudes in…

High Energy Physics - Phenomenology · Physics 2022-07-26 Darius A. Faroughy

We analyse polarised Drell-Yan process using the factorisation method and derive operator definitions for polarised parton distribution functions. We demonstrate that a factorisation analogous to that in the unpolarised Drell-Yan case holds…

High Energy Physics - Phenomenology · Physics 2015-06-25 Prakash Mathews , V. Ravindran

We present a detailed study of nuclear corrections in the deuteron (D) by performing an analysis of data from deep inelastic scattering off proton and D, dilepton pair production in $pp$ and pD interactions, and W^+- and Z boson production…

Nuclear Theory · Physics 2017-09-13 S. I. Alekhin , S. A. Kulagin , R. Petti

A parton-model description of high-energy hadronic interactions in the presence of Lorentz violation is presented. This approach is used to study lepton-hadron and hadron-hadron interactions at large momentum transfer. Cross sections for…

High Energy Physics - Phenomenology · Physics 2019-11-19 Nathan Sherrill

The deuteron-proton elastic scattering is studied in the multiple scattering expansion formalism. The contributions of the one-nucleon-exchange, single- and double scattering are taken into account. The Love and Franey parameterization of…

Nuclear Theory · Physics 2009-11-05 N. B. Ladygina

We present a thorough investigation of the sources of uncertainties to the Drell-Yan production using state-of-the-art predictions for both neutral and charged current channels, focusing on the low invariant mass region. Differential…

High Energy Physics - Phenomenology · Physics 2026-02-05 Ekta Chaubey , Claude Duhr , Rhorry Gauld , Pooja Mukherjee

Initial-state and final-state interactions, which are conventionally neglected in the parton model, have a profound effect in QCD hard-scattering reactions. These effects, which arise from gluon exchange between the active and spectator…

High Energy Physics - Phenomenology · Physics 2017-08-23 Stanley J. Brodsky

We study Drell-Yan (DY) dilepton production in proton(deuterium)-nucleus and in nucleus-nucleus collisions within the light-cone color dipole formalism. This approach is especially suitable for predicting nuclear effects in the DY cross…

High Energy Physics - Phenomenology · Physics 2008-11-26 B. Z. Kopeliovich , J. Raufeisen , A. V. Tarasov , M. B. Johnson

We derive the general structure of the hadronic tensor required to describe deep-inelastic scattering from an off-shell nucleon within a covariant formalism. Of the large number of possible off-shell structure functions we find that only…

Nuclear Theory · Physics 2009-09-25 W. Melnitchouk , A. W. Schreiber , A. W. Thomas

Rescattering of the struck quark in Deep Inelastic Scattering implies that measured parton distributions are not directly related to the Fock state probabilities of the target wave function. The production amplitudes acquire dynamical…

High Energy Physics - Phenomenology · Physics 2017-08-23 Paul Hoyer

We present a twist expansion of differential cross-sections of the forward Drell-Yan process at the high energies. The expansion of all invariant form-factors is performed assuming GBW saturation model and the saturation scale plays the…

High Energy Physics - Phenomenology · Physics 2016-02-22 Tomasz Stebel , Leszek Motyka , Mariusz Sadzikowski

Rescattering of the struck quark in Deep Inelastic Scattering implies that measured parton distributions are not directly related to the Fock state probabilities of the target wave function. The production amplitudes acquire dynamical…

High Energy Physics - Phenomenology · Physics 2007-05-23 Paul Hoyer

We consider the leading and sub-leading twist $T$-odd and even contributions to the $\cos 2\phi$ azimuthal asymmetry in unpolarized dilepton production in Drell-Yan Scattering. We estimate the contributions' effects at $500 {\rm GeV}$, $ 50…

High Energy Physics - Phenomenology · Physics 2009-11-10 Leonard P. Gamberg , Gary R. Goldstein , Karo A. Oganessyan