scholarly journals Aspects of Lattice QCD Calculations of Transverse Momentum-Dependent Parton Distributions

2016 ◽  
Author(s):  
Michael Engelhardt ◽  
Bernhard Musch ◽  
Tanmoy Bhattacharya ◽  
Jeremy R. Green ◽  
Rajan Gupta ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Lattice Qcd ◽  
Parton Distributions ◽  
Transverse Momentum Dependent

scholarly journals Lattice QCD calculations of transverse momentum-dependent parton distributions (TMDs)

2016 ◽  
Vol 112 ◽  
pp. 01008 ◽  
Author(s):  
M. Engelhardt ◽  
B. Musch ◽  
T. Bhattacharya ◽  
J. R. Green ◽  
R. Gupta ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Lattice Qcd ◽  
Parton Distributions ◽  
Transverse Momentum Dependent

scholarly journals The Boer-Mulders Transverse Momentum Distribution in the Pion and its Evolution in Lattice QCD

2015 ◽  
Vol 37 ◽  
pp. 1560034 ◽  
Author(s):  
M. Engelhardt ◽  
B. Musch ◽  
P. Hägler ◽  
A. Schäfer ◽  
J. Negele
Keyword(s):  
Transverse Momentum ◽  
Lattice Qcd ◽  
Momentum Distribution ◽  
Transverse Momentum Distribution ◽  
Matrix Elements ◽  
Parton Distributions ◽  
Transverse Momentum Dependent ◽  
Gauge Link ◽  
Definition Of ◽  
Type Parameter

Starting from a definition of transverse momentum-dependent parton distributions (TMDs) in terms of hadronic matrix elements of a quark bilocal operator containing a staple-shaped gauge link, selected TMD observables can be evaluated within Lattice QCD. A TMD ratio describing the Boer-Mulders effect in the pion is investigated, with a particular emphasis on its evolution as a function of a Collins-Soper-type parameter which quantifies the proximity of the staple-shaped gauge links to the light cone.

TRANSVERSE MOMENTUM-DEPENDENT PARTON DISTRIBUTIONS FROM LATTICE QCD

2012 ◽  
Vol 20 ◽  
pp. 153-161
Author(s):  
M. ENGELHARDT ◽  
B. MUSCH ◽  
P. HÄGLER ◽  
J. NEGELE ◽  
A. SCHÄFER
Keyword(s):  
Transverse Momentum ◽  
Inelastic Scattering ◽  
Lattice Qcd ◽  
Lorentz Frame ◽  
Matrix Elements ◽  
Lattice Calculation ◽  
Parton Distributions ◽  
Transverse Momentum Dependent ◽  
Calculation Results ◽  
Definition Of

Starting from a definition of transverse momentum-dependent parton distributions for semi-inclusive deep inelastic scattering and the Drell-Yan process, given in terms of matrix elements of a quark bilocal operator containing a staple-shaped Wilson connection, a scheme to determine such observables in lattice QCD is developed and explored. Parametrizing the aforementioned matrix elements in terms of invariant amplitudes permits a simple transformation of the problem to a Lorentz frame suited for the lattice calculation. Results for the Sivers and Boer-Mulders transverse momentum shifts are presented, focusing in particular on their dependence on the staple extent and the Collins-Soper evolution parameter.

scholarly journals Nucleon transverse momentum-dependent parton distributions in lattice QCD: Renormalization patterns and discretization effects

2017 ◽  
Vol 96 (9) ◽  
Author(s):  
Boram Yoon ◽  
Michael Engelhardt ◽  
Rajan Gupta ◽  
Tanmoy Bhattacharya ◽  
Jeremy R. Green ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Lattice Qcd ◽  
Parton Distributions ◽  
Transverse Momentum Dependent

scholarly journals Determination of the Collins-Soper Kernel from Lattice QCD

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Maximilian Schlemmer ◽  
Alexey Vladimirov ◽  
Christian Zimmermann ◽  
Michael Engelhardt ◽  
Andreas Schäfer
Keyword(s):  
Transverse Momentum ◽  
Lattice Qcd ◽  
Energy Dependence ◽  
Parton Distributions ◽  
Transverse Momentum Dependent ◽  
Good Agreement

Abstract We present lattice results for the non-perturbative Collins-Soper (CS) kernel, which describes the energy-dependence of transverse momentum-dependent parton distributions (TMDs). The CS kernel is extracted from the ratios of first Mellin moments of quasi-TMDs evaluated at different nucleon momenta. The analysis is done with dynamical Nf = 2 + 1 clover fermions for the CLS ensemble H101 (a = 0.0854 fm, mπ = mK = 422 MeV). The computed CS kernel is in good agreement with experimental extractions and previous lattice studies.

scholarly journals Lattice QCD calculations of nucleon transverse momentum-dependent parton distributions (TMDs) at 170 MeV pion mass

2016 ◽  
Author(s):  
Michael Engelhardt ◽  
Bernhard Musch ◽  
Tanmoy Bhattacharya ◽  
Rajan Gupta ◽  
Philipp Haegler ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Lattice Qcd ◽  
Pion Mass ◽  
Parton Distributions ◽  
Transverse Momentum Dependent

scholarly journals Lattice QCD investigation of nucleon transverse momentum-dependent parton distributions

2013 ◽  
Author(s):  
Michael Engelhardt ◽  
Bernhard Musch ◽  
Philipp Haegler ◽  
John Negele ◽  
Andreas Schafer
Keyword(s):  
Transverse Momentum ◽  
Lattice Qcd ◽  
Parton Distributions ◽  
Transverse Momentum Dependent

scholarly journals Transverse-momentum-dependent parton distributions up to N3LL from Drell-Yan data

2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
Alessandro Bacchetta ◽  
Valerio Bertone ◽  
Chiara Bissolotti ◽  
Giuseppe Bozzi ◽  
Filippo Delcarro ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Parton Distributions ◽  
Transverse Momentum Dependent

scholarly journals Nucleon transverse momentum-dependent parton distributions from domain wall fermion calculations at 297 MeV pion mass

2015 ◽  
Author(s):  
Michael Engelhardt ◽  
Bernhard Musch ◽  
Tanmoy Bhattacharya ◽  
Rajan Gupta ◽  
Ph. Hagler ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Domain Wall ◽  
Pion Mass ◽  
Parton Distributions ◽  
Transverse Momentum Dependent ◽  
Domain Wall Fermion
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