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Spectral analysis of gluonic pole matrix elements for fragmentation

DSpace at IIT Bombay

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Title Spectral analysis of gluonic pole matrix elements for fragmentation
 
Creator GAMBERG, LP
MUKHERJEE, A
MULDERS, PJ
 
Subject transverse-spin asymmetries
deep-inelastic scattering
final-state interactions
odd parton distributions
drell-yan process
chiral-odd
single-spin
spectator model
gauge
 
Description The nonvanishing of gluonic pole matrix elements can explain the appearance of single spin asymmetries in high-energy scattering processes. We use a spectator framework approach to investigate the spectral properties of quark-quark-gluon correlators and use this to study gluonic pole matrix elements. Such matrix elements appear in principle both for distribution functions such as the Sivers function and fragmentation functions such as the Collins function. We find that for a specific class of spectator models, the contribution of the gluonic pole matrix element in fragmentation functions vanishes. This outcome is important in the study of universality for fragmentation functions and confirms findings using a different approach.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-16T23:52:33Z
2011-12-26T12:50:01Z
2011-12-27T05:35:56Z
2011-07-16T23:52:33Z
2011-12-26T12:50:01Z
2011-12-27T05:35:56Z
2008
 
Type Article
 
Identifier PHYSICAL REVIEW D, 77(11), -
1550-7998
http://dx.doi.org/10.1103/PhysRevD.77.114026
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4564
http://hdl.handle.net/10054/4564
 
Language en