scholarly journals Sivers function in a spectator model with axial-vector diquarks

2004 ◽  
Vol 578 (1-2) ◽  
pp. 109-118 ◽  
Author(s):  
Alessandro Bacchetta ◽  
Andreas Schäfer ◽  
Jian-Jun Yang
Keyword(s):  
Axial Vector ◽  
Sivers Function ◽  
Spectator Model

scholarly journals Quark Angular Momentum and Gravitational Form Factors

2016 ◽  
Vol 40 ◽  
pp. 1660054 ◽  
Author(s):  
Tianbo Liu ◽  
Bo-Qiang Ma
Keyword(s):  
Angular Momentum ◽  
Gauge Field ◽  
Light Cone ◽  
Total Angular Momentum ◽  
Field Model ◽  
Axial Vector ◽  
Form Factors ◽  
Momentum Fraction ◽  
Sum Rule ◽  
Spectator Model

We investigate the quark angular momentum in a light-cone spectator model. The canonical angular momentum sum rule is satisfied in both the scalar and the axial-vector cases. Then we perform a calculation of the gravitational form factors which are expected to be related to the angular momentum of each constituent in this no gauge field model. We find this relation is satisfied for the total angular momentum as a direct conclusion of the momentum fraction sum rule and the anomalous gravitomagnetic moment sum rule, but for each constituent it is violated.

BRST quantization of vector and axial-vector gauge theory

1993 ◽  
Vol 48 (10) ◽  
pp. 4916-4918
Author(s):  
Dae Sung Hwang ◽  
Chang-Yeong Lee
Keyword(s):  
Gauge Theory ◽  
Brst Quantization ◽  
Axial Vector ◽  
Vector Gauge

scholarly journals Gluon Sivers function and transverse single spin asymmetries in e+p↑→γ+X

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Siddhesh Padval ◽  
Rohini M. Godbole ◽  
Abhiram Kaushik ◽  
Anuradha Misra ◽  
Vaibhav S. Rawoot
Keyword(s):  
Spin Asymmetries ◽  
Single Spin ◽  
Single Spin Asymmetries ◽  
Sivers Function

scholarly journals Reweighting the Sivers function with jet data from STAR

2021 ◽  
Vol 815 ◽  
pp. 136135
Author(s):  
M. Boglione ◽  
U. D'Alesio ◽  
C. Flore ◽  
J.O. Gonzalez-Hernandez ◽  
F. Murgia ◽  
...  
Keyword(s):  
Sivers Function

scholarly journals Constraints on New Physics in Electron g−2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector

2021 ◽  
Vol 126 (21) ◽  
Author(s):  
Yu. M. Andreev ◽  
D. Banerjee ◽  
J. Bernhard ◽  
V. E. Burtsev ◽  
A. G. Chumakov ◽  
...  
Keyword(s):  
Axial Vector ◽  
New Physics ◽  
Invisible Decays

scholarly journals The fermionic universal one-loop effective action

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Sebastian A. R. Ellis ◽  
Jérémie Quevillon ◽  
Pham Ngoc Hoa Vuong ◽  
Tevong You ◽  
Zhengkang Zhang
Keyword(s):  
Path Integral ◽  
Effective Action ◽  
Covariant Derivative ◽  
Heavy Fermion ◽  
Axial Vector ◽  
Derivative Expansion ◽  
Universal Structure ◽  
Pseudo Scalar ◽  
Matching Techniques ◽  
Analytical Expressions

Abstract Recent development of path integral matching techniques based on the covariant derivative expansion has made manifest a universal structure of one-loop effective Lagrangians. The universal terms can be computed once and for all to serve as a reference for one-loop matching calculations and to ease their automation. Here we present the fermionic universal one-loop effective action (UOLEA), resulting from integrating out heavy fermions (Dirac or Majorana) with scalar, pseudo-scalar, vector and axial-vector couplings. We also clarify the relation of the new terms computed here to terms previously computed in the literature and those that remain to complete the UOLEA. Our results can be readily used to efficiently obtain analytical expressions for effective operators arising from heavy fermion loops [13].

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