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Title Number density interpretation of dihadron fragmentation functions
Authors D. Pitonyak, Christopher Cocuzza, Andreas Metz, Alexei Prokudin, Nobuo Sato
JLAB number JLAB-THY-23-3826
LANL number arXiv:2305.11995
Other number DOE/OR/23177-6204
Document Type(s) (Journal Article) 
Associated with EIC: No
Supported by Jefferson Lab LDRD Funding: No
Funding Source: Nuclear Physics (NP)

Compiled for Physical Review Letters
Volume 132
Page(s) 011902
Publication Abstract: We present a new quantum field-theoretic definition of fully unintegrated dihadron fragmentation functions (DiFFs) as well as a generalized version for n-hadron fragmentation functions. We demon- strate that this definition allows certain sum rules to be satisfied, making it consistent with a number density interpretation. Moreover, we show how our corresponding so-called extended DiFFs that enter existing phenomenological studies are number densities and also derive their evolution equa- tions. Within this new framework, DiFFs extracted from experimental measurements will have a clear physical meaning.
Experiment Numbers:
Document: pdf
Accepted Manuscript: PhysRevLett.132.011902.pdf
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