Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Jet Mass Dependence of Fragmentation in Positron-Proton Collisions   We propose the characterization of fragmentation functions by the energy
fraction x, a hadron takes away from the energy of the jet measured in the
frame co-moving with the jet. Besides, we propose the usage of the jet mass as
the fragmentation scale Q. We show that these two Lorentz-invariant variables
emerge naturally in a microcanonical ensemble with conserved fourmomentum.
Then, we construct a statistical hadronisation model, in which, two features of
the hadronic final states in various high-energy reactions (power law spectra
and negative-binomial multiplicity distributions) can be connected simply.
Finally, we analyse the scale dependence of the parameters of the model (power
of the spectrum and mean energy per hadron) in the phi^3 theory. Fitting
fragmentation functions in diffractive positron-proton collisions, we obtain a
prediction for the jet mass dependence of the hadron multiplicity distribution
inside jets.

15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph