A Measurement of xF_3(nu)-xF_3(anti-nu) and R with the CCFR Detector

TL;DR

This paper presents measurements of neutrino and antineutrino differential cross sections, extracting Delta xF_3 and R, and compares results with QCD models, providing new insights into nucleon structure and charm production.

Contribution

First measurement of the Q^2 dependence of R for x<0.1 and detailed comparison of Delta xF_3 with NLO QCD models.

Findings

Delta xF_3 measured and compared to models

Q^2 dependence of R at low x observed for the first time

Differential cross sections over a wide energy range obtained

Abstract

We report on a measurement of the neutrino-nucleon and antineutrino-nucleon differential cross sections in the CCFR detector. The measurement of the differential cross sections over a wide range of energies allows Delta xF_3 = xF_3(nu)-xF_3(anti-nu) and R to be extracted. Delta xF_3 is related to the difference between the contributions of the strange and charm seas in the nucleon to production of massive charm quark. The results for Delta xF_3 are compared to various massive charm NLO QCD models. The Q^2 dependence of R for x<0.1 has been measured for the first time.