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Seidl, R.*; 谷田 聖; Belle Collaboration*; 他136名*
Physical Review D, 101(9), p.092004_1 - 092004_13, 2020/05
被引用回数:5 パーセンタイル:37.47(Astronomy & Astrophysics)We report new measurements of the production cross sections of pairs of charged pions and kaons as a function of their fractional energies using various fractional-energy definitions. Two different fractional-energy definitions were used and compared to the conventional fractional-energy definition reported previously. The new variables aim at either identifying dihadron cross sections in terms of single-hadron fragmentation functions, or to provide a means of characterizing the transverse momentum created in the fragmentation process. The results were obtained applying the updated initial-state radiation correction used in other recent Belle publications on light-hadron production cross sections. In addition, production cross sections of single charged pions, kaons, and protons were also updated using this initial-state radiation correction. The cross sections are obtained from a 558 fb data sample collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider.