Lambda(+)(c)/Lambda(-)(c) and Lambda(0)(b)/(Lambda)over-bar(b)(0) production asymmetry at the LHC from heavy quark recombination

作者：Lai W K^*; Leibovich A K

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2015, 91(5): 054022.

DOI：10.1103/PhysRevD.91.054022

The asymmetries in the forward region production cross section of Lambda(+)(c)/Lambda(-)(c) and Lambda(0)(b)/(Lambda) over bar (0)(b) are predicted b using the heavy quark recombination mechanism for pp collisions at 7 TeV and 14 TeV. Using nonperturbative parameters determined from various previous experiments, we find that A(p) (Lambda(+)(c)/Lambda(-)(c)) similar to 1-2% in the region 2 < y < 5 and 2 GeV < p(T) < 20 GeV and A(p) (Lambda(0)(d)/(Lambda) over bar (0)(b)) similar to 1-3% in the region 2 < y < 5 and 5 GeV < p(T) < 20 GeV. The differential distributions of A(p) are significant at the high-rapidity and low- p(T) ends (similar to 2-15%). Sensitivity of the integrated A(p) on the upper rapidity cut and lower p(T) cut is discussed.

• 出版日期2015-3-18