Department
Physics
Document Type
Article
Publication Date
8-2017
Embargo Period
7-3-2018
Abstract
The inclusive cross sections for dihadrons of charged pions and kaons (e+e−→hhX) in electron-positron annihilation are reported. They are obtained as a function of the total fractional energy and invariant mass for any di-hadron combination in the same hemisphere as defined by the thrust event-shape variable and its axis. Since same-hemisphere dihadrons can be assumed to originate predominantly from the same initial parton, di-hadron fragmentation functions are probed. These di-hadron fragmentation functions are needed as an unpolarized baseline in order to quantitatively understand related spin-dependent measurements in other processes and to apply them to the extraction of quark transversity distribution functions in the nucleon. The di-hadron cross sections are obtained from a 655 fb−1 data sample collected at or near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider.
Journal
Physical Review D
Journal ISSN
2470-0010
Volume
96
Issue
3
Digital Object Identifier (DOI)
10.1103/PhysRevD.96.032005
Recommended Citation
et al., R. Seidl; Joffe, D.; and Kulasiri, Ratnappuli L., "Invariant-mass and fractional-energy dependence of inclusive production of dihadrons in e + e − annihilation at √ s = 10.58 GeV" (2017). Faculty Publications. 4200.
https://digitalcommons.kennesaw.edu/facpubs/4200
Comments
Preprint.