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 ϒð4SÞ resonance with the Belle detector at the KEKB asymmetric-energy eþe collider.

Язык оригиналаанглийский
Номер статьи032005
Число страниц21
ЖурналPhysical Review D
Номер выпуска3
СостояниеОпубликовано - 31 авг. 2017


Подробные сведения о темах исследования «Invariant-mass and fractional-energy dependence of inclusive production of dihadrons in e + e annihilation at √s = 10.58 GeV». Вместе они формируют уникальный семантический отпечаток (fingerprint).