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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Measurement of the forward-backward asymmetry of Λ and Λ¯ production in pp¯ collisions
AU - Bertram, Iain Alexander
AU - Fox, Harald
AU - Borissov, Guennadi
AU - Ratoff, Peter Neil
AU - Ross, Anthony
AU - Williams, Mark Richard James
AU - Price, Darren
AU - D0 Collaboration
PY - 2016/2/9
Y1 - 2016/2/9
N2 - We study Λ and Λ¯ production asymmetries in pp¯→Λ(Λ¯)X, pp¯→J/ψΛ(Λ¯)X, and pp¯→μ±Λ(Λ¯)X events recorded by the D0 detector at the Fermilab Tevatron collider at s√=1.96 TeV. We find an excess of Λ’s (Λ¯’s) produced in the proton (antiproton) direction. This forward-backward asymmetry is measured as a function of rapidity. We confirm that the Λ¯/Λ production ratio, measured by several experiments with various targets and a wide range of energies, is a universal function of “rapidity loss,” i.e., the rapidity difference of the beam proton and the lambda.
AB - We study Λ and Λ¯ production asymmetries in pp¯→Λ(Λ¯)X, pp¯→J/ψΛ(Λ¯)X, and pp¯→μ±Λ(Λ¯)X events recorded by the D0 detector at the Fermilab Tevatron collider at s√=1.96 TeV. We find an excess of Λ’s (Λ¯’s) produced in the proton (antiproton) direction. This forward-backward asymmetry is measured as a function of rapidity. We confirm that the Λ¯/Λ production ratio, measured by several experiments with various targets and a wide range of energies, is a universal function of “rapidity loss,” i.e., the rapidity difference of the beam proton and the lambda.
U2 - 10.1103/PhysRevD.93.032002
DO - 10.1103/PhysRevD.93.032002
M3 - Journal article
VL - 93
JO - Physical Review D
JF - Physical Review D
SN - 1550-7998
IS - 3
M1 - 032002
ER -