scholarly journals Next-to-next-to-leading orderO(αs4)results for heavy quark pair production in quark-antiquark collisions: The one-loop squared contributions

2008 ◽  
Vol 77 (9) ◽  
Author(s):  
J. G. Körner ◽  
Z. Merebashvili ◽  
M. Rogal
Keyword(s):  
Pair Production ◽  
Heavy Quark ◽  
Heavy Quark Pair ◽  
The One

scholarly journals How to measure the linear polarization of gluons in unpolarized proton using the heavy-quark pair production

2019 ◽  
Vol 204 ◽  
pp. 02006 ◽  
Author(s):  
N. Ya. Ivanov ◽  
A. V. Efremov ◽  
O. V. Teryaev
Keyword(s):  
Pair Production ◽  
Heavy Quark ◽  
Linear Polarization ◽  
Heavy Quark Production ◽  
Production Plane ◽  
Linearly Polarized ◽  
Quark Production ◽  
Mulders Function ◽  
Heavy Quark Pair ◽  
Azimuthal Asymmetries

In recent papers [1, 2], two new ways have been proposed to probe the linear polarization of gluons in unpolarized proton: using the azimuthal asymmetries and Callan-Gross ratio in heavy-quark pair leptoproduction, lN → l′QQ̅X. In this talk, we discuss in details the sensitivity of the QCD predictions for the azimuthal cos φ and cos 2φ asymmetries to the contribution of linearly polarized gluons inside unpolarized proton, where the azimuth φ is the angle between the lepton scattering plane (l, l′) and the heavy quark production plane (N, Q). Our analysis shows that the azimuthal distributions under consideration vary from 0 to 1 depending on the value of the gluonic counterpart of the Boer- Mulders function, $h_{1}^{ \bot g}$. We conclude that the cos φ and cos 2φ asymmetries in heavy-quark pair production in DIS processes are predicted to be large in wide kinematic ranges and sensitive to the contribution of linearly polarized gluons.

scholarly journals Exclusive heavy quark-pair production in ultraperipheral collisions

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Mateus Reinke Pelicer ◽  
Emmanuel Gräve de Oliveira ◽  
Roman Pasechnik
Keyword(s):  
Pair Production ◽  
Heavy Quark ◽  
Heavy Quark Pair

scholarly journals The two-loop soft function for heavy quark pair production at future linear colliders

2015 ◽  
Vol 92 (4) ◽  
Author(s):  
Andreas von Manteuffel ◽  
Robert M. Schabinger ◽  
Hua Xing Zhu
Keyword(s):  
Pair Production ◽  
Heavy Quark ◽  
Soft Function ◽  
Linear Colliders ◽  
Heavy Quark Pair

scholarly journals Low transverse momentum heavy quark pair production to probe gluon tomography

2013 ◽  
Vol 727 (4-5) ◽  
pp. 474-479 ◽  
Author(s):  
Ruilin Zhu ◽  
Peng Sun ◽  
Feng Yuan
Keyword(s):  
Transverse Momentum ◽  
Pair Production ◽  
Heavy Quark ◽  
Heavy Quark Pair

scholarly journals Two-loop fermionic corrections to heavy-quark pair production: the quark-antiquark channel

2008 ◽  
Vol 2008 (07) ◽  
pp. 129-129 ◽  
Author(s):  
R Bonciani ◽  
A Ferroglia ◽  
T Gehrmann ◽  
D Maître ◽  
C Studerus
Keyword(s):  
Pair Production ◽  
Heavy Quark ◽  
Heavy Quark Pair
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