TY - JOUR
T1 - On the use of the KMR unintegrated parton distribution functions
AU - Golec-Biernat, Krzysztof
AU - Staśto, Anna M.
N1 - Publisher Copyright:
© 2018 The Author(s)
PY - 2018/6/10
Y1 - 2018/6/10
N2 - We discuss the unintegrated parton distribution functions (UPDFs) introduced by Kimber, Martin and Ryskin (KMR), which are frequently used in phenomenological analyses of hard processes with transverse momenta of partons taken into account. We demonstrate numerically that the commonly used differential definition of the UPDFs leads to erroneous results for large transverse momenta. We identify the reason for that, being the use of the ordinary PDFs instead of the cutoff dependent distribution functions. We show that in phenomenological applications, the integral definition of the UPDFs with the ordinary PDFs can be used.
AB - We discuss the unintegrated parton distribution functions (UPDFs) introduced by Kimber, Martin and Ryskin (KMR), which are frequently used in phenomenological analyses of hard processes with transverse momenta of partons taken into account. We demonstrate numerically that the commonly used differential definition of the UPDFs leads to erroneous results for large transverse momenta. We identify the reason for that, being the use of the ordinary PDFs instead of the cutoff dependent distribution functions. We show that in phenomenological applications, the integral definition of the UPDFs with the ordinary PDFs can be used.
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U2 - 10.1016/j.physletb.2018.04.061
DO - 10.1016/j.physletb.2018.04.061
M3 - Article
AN - SCOPUS:85046628212
SN - 0370-2693
VL - 781
SP - 633
EP - 638
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -