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Title: Measurement of the forward-backward asymmetry of $$\Lambda$$ and $$\bar{\Lambda}$$ production in $$p \bar{p}$$ collisions

Journal Article · · Physical Review D
 [1]
  1. Joint Institute for Nuclear Research, Dubna (Russia). et al.
+ Show Author Affiliations

Here, we study $$\Lambda$$ and $$\bar{\Lambda}$$ production asymmetries in $$p \bar{p} \rightarrow \Lambda (\bar{\Lambda}) X$$, $$p \bar{p} \rightarrow J/\psi \Lambda (\bar{\Lambda}) X$$, and $$p \bar{p} \rightarrow \mu^\pm \Lambda (\bar{\Lambda}) X$$ events recorded by the D0 detector at the Fermilab Tevatron collider at $$\sqrt{s} = 1.96$$ TeV. We find an excess of $$\Lambda$$'s ($$\bar{\Lambda}$$'s) produced in the proton (antiproton) direction. This forward-backward asymmetry is measured as a function of rapidity. We confirm that the $$\bar{\Lambda}/\Lambda$$ 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.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
D0 Collaboration
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1247504
Alternate ID(s):
OSTI ID: 1237505
Report Number(s):
FERMILAB-PUB-15-496-E; arXiv:1511.05113; PRVDAQ; 1404885
Journal Information:
Physical Review D, Vol. 93, Issue 3; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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Cited By (1)

Measurement of the forward-backward asymmetries in the production of Ξ and Ω baryons in p p ¯ collisions journal June 2016

Linked Research (4)

Figures / Tables (14)

TABLE I(p. 3)table TABLE I
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