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DOE OSTI · 2278752

Number Density Interpretation of Dihadron Fragmentation Functions

Pitonyak, D. (ORCID:0000000188221323)·Cocuzza, C.·Metz, A. (ORCID:0000000202235618)·Prokudin, A.·Sato, N.
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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 demonstrate 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 equations. Within this new framework, DiFFs extracted from experimental measurements will have a clear physical meaning. Published by the American Physical Society 2024

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSfragmentation functionsquantum chromodynamics

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Pitonyak, D. (ORCID:0000000188221323), Cocuzza, C., Metz, A. (ORCID:0000000202235618), Prokudin, A., Sato, N.. 2024-01-04. Number Density Interpretation of Dihadron Fragmentation Functions. https://doi.org/10.1103/physrevlett.132.011902

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