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Extensive experimental measurements of spin and azimuthal asymmetries in various processes have stimulated theoretical interest and progress in studies of the nucleon structure. Interpretation of experimental data in terms of parton…

High Energy Physics - Experiment · Physics 2019-10-01 Harut Avakian , Bakur Parsamyan , Alexey Prokudin

We present a lattice QCD calculation of the transversity isovector- and isoscalar-quark parton distribution functions (PDFs) of the proton utilizing a perturbative matching at next-to-leading-order (NLO) accuracy. Additionally, we determine…

High Energy Physics - Lattice · Physics 2024-03-25 Xiang Gao , Andrew D. Hanlon , Swagato Mukherjee , Peter Petreczky , Qi Shi , Sergey Syritsyn , Yong Zhao

Electron Ion Collider is a future high energy facility for studies of the structure of the nucleon. Three-dimensional parton structure is one of the main goals of EIC. In momentum space Transverse Momentum Dependent Distributions (TMDs) are…

High Energy Physics - Phenomenology · Physics 2011-08-19 Alexei Prokudin

The SoLid collaboration operates since 2018 a 1.6 ton neutrino detector at the Belgian BR2 reactor, with as main goal the search for the oscillation of electron anti-neutrinos to a sterile state. The highly segmented SoLid detector employs…

Instrumentation and Detectors · Physics 2021-05-28 Noë Roy

The SoLid experiment aims to resolve the reactor neutrino anomaly by searching for electron-to-sterile anti-neutrino oscillations. The search will be performed between 5.5 and 10 m from the highly enriched uranium core of the BR2 reactor at…

High Energy Physics - Experiment · Physics 2019-08-13 Nick Ryder

Like the axial vector charges, defined from the forward nucleon matrix element of the axial vector current on the light cone, the nucleon tensor charge, defined from the corresponding matrix element of the tensor current, is essential for…

High Energy Physics - Phenomenology · Physics 2007-05-23 Leonard Gamberg , Gary R. Goldstein

We report a state-of-the-art lattice QCD calculation of the isovector quark transversity distribution of the proton in the continuum and physical mass limit using large-momentum effective theory. The calculation is done at four lattice…

Over the past decade measurements of unpolarized structure functions at Jefferson Lab with unprecedented precision have significantly advanced our knowledge of nucleon structure. These have for the first time allowed quantitative tests of…

Nuclear Experiment · Physics 2015-05-27 M. E. Christy , W. Melnitchouk

The aim of this Thesis is to contribute to the understanding of the nucleon structure through the study of two observables accessible in Semi-Inclusive Deep Inelastic Scattering (SIDIS) of high energy leptons off unpolarized protons: the…

High Energy Physics - Experiment · Physics 2021-09-20 Andrea Moretti

The SoLid collaboration is currently operating a 1.6 tons neutrino detector near the Belgian BR2 reactor, with main goal the observation of the oscillation of electron antineutrinos to previously undetected flavor states. The highly…

Instrumentation and Detectors · Physics 2019-10-29 Luis Manzanillas

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

This paper presents a comprehensive optimisation study to maximise the light collection efficiency of scintillating cube elements used in the SoLid detector. Very short baseline reactor experiments, like SoLid, look for active to sterile…

Future energy-frontier electron-positron colliders will be capable of high-precision studies of top quark properties. The measurement of the top-pair production cross section around the threshold provides access to the mass of the top quark…

High Energy Physics - Experiment · Physics 2016-11-11 Frank Simon

Jefferson Lab (JLab) is starting a wide experimental program aimed at studying the neutron's structure, with a great emphasis on the extraction of the parton transverse-momentum distributions (TMDs). To this end, Semi-inclusive…

Nuclear Theory · Physics 2017-02-01 Alessio Del Dotto , Leonid Kaptari , Emanuele Pace , Giovanni Salmè , Sergio Scopetta

The high-$x$ data from the ZEUS Collaboration are used to extract parton density distributions of the proton deep in the perturbative regime of QCD. The data primarily constrain the up-quark valence distribution and new results are…

High Energy Physics - Phenomenology · Physics 2023-04-19 Ritu Aggarwal , Michiel Botje , Allen Caldwell , Francesca Capel , Oliver Schulz

We perform the first global quantum chromodynamics (QCD) analysis of dihadron production for a comprehensive set of data in electron-positron annihilation, semi-inclusive deep-inelastic scattering, and proton-proton collisions, from which…

High Energy Physics - Phenomenology · Physics 2024-03-01 C. Cocuzza , A. Metz , D. Pitonyak , A. Prokudin , N. Sato , R. Seidl

The project to upgrade the CEBAF accelerator at Jefferson Lab to 12 GeV is presented. Most of the research program supporting that upgrade, will require a highly polarized beam, as will be illustrated by a few selected examples. To carry…

Nuclear Experiment · Physics 2014-11-18 Kees de Jager

We present results on the quark unpolarized, helicity and transversity parton distributions functions of the nucleon. We use the quasi-parton distribution approach within the lattice QCD framework and perform the computation using an…

High Energy Physics - Lattice · Physics 2021-09-22 Constantia Alexandrou , Martha Constantinou , Kyriakos Hadjiyiannakou , Karl Jansen , Floriano Manigrasso

Recent experimental and theoretical ideas are laying the ground for a new era in the knowledge of the parton structure of nuclei. We report on two promising directions beyond inclusive deep inelastic scattering experiments, aimed at, among…

Nuclear Experiment · Physics 2016-07-20 R. Dupré , S. Scopetta

We present the principles of the measurement of the quark transversity distributions in semi-inclusive deep inelastic electron scattering, which form the basis of HELP and one of the ELFE proposals. A string model for Collins-type asymmetry…

High Energy Physics - Phenomenology · Physics 2007-05-23 X. Artru