[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Wednesday, Sept. 5, 2018
1:00 p.m.
CEBAF Center, Room L102

Aurore Courtoy
UNAM

*Pion Nucleus Drell-Yan Process and Parton Transverse Momentum in the Pion*

I will present an analysis of unpolarized Drell–Yan (DY) pair production 
in pion–nucleus scattering in
which the pion TMDs are those obtained in the Nambu–Jona Lasinio (NJL) 
framework, with Pauli–Villars
regularization. The scale of the NJL model is determined with a 
minimization procedure comparing NLO
predictions based on NJL evolved pion distributions to rapidity 
differential DY cross sections data. The
resulting distributions are then used to describe, up to next-to-leading 
logarithmic accuracy, the transverse
momentum spectrum of dilepton pairs up to a transverse momentum of 2 
GeV. With no additional parameters,
fair agreement is found with available pion–nucleus data. We find 
sizable evolution effects on the shape of the
distributions and on the generated average transverse momentum of the 
dilepton pair. This talk is based on a
recent publication: Eur. Phys. J. C78 (2018) no.8, 644

Blue Jeans connection: https://bluejeans.com/321085255


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