Applications of pT-xR Variables in Describing Inclusive Cross Sections at the LHC
Name
universe-07-00196.pdf
Size
4.99 MB
Format
Adobe PDF
Checksum (MD5)
6beabcdd1d9db3c5401ff9508bb770bc
Author(s)
Taylor, Frank E.
Date Issued
June 9, 2021
Publisher
Multidisciplinary Digital Publishing Institute
Citation
Universe 7 (6): 196 (2021)
Version
Final published version
Abstract
Invariant inclusive single-particle/jet cross sections in p–p collisions can be factorized in terms of two separable dependences, a [pT−s] sector and an [xR−pT−s] sector. Here, we extend our earlier work by analyzing more extensive data to explore various s-dependent attributes and other systematics of inclusive jet, photon and single particle reactions. Approximate power laws in s,pT and xR are found. Physical arguments are given which relate observations to the underlying physics of parton–parton hard scattering and the parton distribution functions in the proton. We show that the A(s,pT) function, introduced in our earlier publication to describe the pT dependence of the inclusive cross section, is directly related to the underlying hard parton–parton scattering for jet production, with little influence from soft physics. In addition to the A-function, we introduce another function, the F(s,xR) function that obeys radial scaling for inclusive jets and offers another test of the underlying parton physics. An application to heavy ion physics is given, where we use our variables to determine the transparency of cold nuclear matter to penetrating heavy mesons through the lead nucleus.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.3390/universe7060196
