Asymmetry in Lambda(b) and (Lambda)over-bar(b) production

作者：Rosner Jonathan L^*

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2014, 90(1): 014023.

DOI：10.1103/PhysRevD.90.014023

In CMS data at the CERN Large Hadron Collider, the ratio sigma(pp -> (Lambda) over bar X-b)/sigma(pp -> Lambda X-b) appears to fall as the baryons become more forward. Mechanisms which could give rise to this effect are discussed. It is urged that the same physics be explored in data from the ATLAS and LHCb detectors at CERN and the Fermilab Tevatron proton-antiproton collider. In the latter, if such leading- baryon effects are present, one expects Lambda(b) to be preferentially produced in the direction of the proton and (Lambda) over bar (b) to be preferentially produced in the direction of the antiproton.

• 出版日期2014-7-15