Measurement of the forward-backward asymmetry of Λ and Λ ¯ production in p p ¯ collisions

(D0 Collaboration)

doi:10.1103/PhysRevD.93.032002

Measurement of the forward-backward asymmetry of Λ and Λ ¯ production in p p ¯ collisions

(D0 Collaboration)

Joint Institute for Nuclear Research, Dubna
University of Oklahoma
Tata Institute of Fundamental Research, Mumbai
University of Illinois at Chicago
Florida State University
University of Manchester
Petersburg Nuclear Physics Institute (PNPI)
University of Michigan, Ann Arbor
Augustana College
Louisiana Tech University
Czech Technical University in Prague
Universidad de Los Andes, Colombia
Université Blaise Pascal
Fermi National Accelerator Laboratory
University of Virginia
Northeastern University
University of Kansas
Institut Pierre Simon Laplace, CNRS and CEA
Rua São Francisco de Xavier
Panjab University
Universités Paris VI and VII
University of Freiburg
Lancaster University
Imperial College London
University of Mississippi
Northern Illinois University
University of Nebraska-Lincoln
Stony Brook University
Moscow State University
National University of Kyiv
Institute of Nuclear Research, National Academy of Sciences in Ukraine
University of Texas at Arlington
Georg-August-Universität Göttingen
Michigan State University
Johannes Gutenberg University
University of Liverpool
Uppsala University
CINVESTAV-IPN
University of Notre Dame
Rice University
Korea University
University of Delhi
Visitor from American Association for the Advancement of Science
Aix-Marseille Université
Women and Infants Hospital of Rhode Island-Warren Alpert Medical School of Brown University
Southern Methodist University
Science Park 105
Radboud University
University of Rochester
Kurchatov Institute
c/o DESY
University of California, Riverside
Indiana University Bloomington
Institute for Theoretical and Experimental Physics
Rutgers University–New Brunswick
Université de Strasbourg
IGFL, Université de Lyon, Université Lyon 1
Laboratoire de l'Accélérateur Linéaire
University College Dublin
Oklahoma State University
University of Science and Technology of China
Iowa State University
RWTH Aachen University
Centro Brasileiro de Pesquisas Fisicas
Consejo Nacional de Ciencia y Tecnología
University College London
Universidad San Francisco de Quito
University at Buffalo, The State University of New York
University of Maryland, College Park
University of Arizona
Purdue University
The Barcelona Institute of Science and Technology
Institute of Physics of the Czech Academy of Sciences
Instituto Politécnico Nacional
Federal University of ABC (UFABC)
Institute of Meteorology and Climate Research
Universität München
Purdue University Northwest
Stanford Linear Accelerator Center
Brookhaven National Laboratory
U.S. Department of Energy
Laboratoire de Physique Subatomique et de Cosmologie de Grenoble
São Paulo State University
Northwestern University
Oregon State University
Langston University
Charles University
Princeton University
University of Washington
European Organization for Nuclear Research

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

4 Citations (Scopus)

Résumé

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.

langue originale	Anglais
Numéro d'article	032002
journal	Physical Review D
Volume	93
Numéro de publication	3
Les DOIs	https://doi.org/10.1103/PhysRevD.93.032002
état	Publié - 9 févr. 2016
Modification externe	Oui

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10.1103/PhysRevD.93.032002

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@article{c5f2f0165499480599ea92d3f752779e,

title = "Measurement of the forward-backward asymmetry of Λ and Λ ¯ production in p p ¯ collisions",

abstract = "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.",

author = "\{(D0 Collaboration)\} and Abazov, \{V. M.\} and B. Abbott and Acharya, \{B. S.\} and M. Adams and T. Adams and Agnew, \{J. P.\} and Alexeev, \{G. D.\} and G. Alkhazov and A. Alton and A. Askew and S. Atkins and K. Augsten and C. Avila and F. Badaud and L. Bagby and B. Baldin and Bandurin, \{D. V.\} and S. Banerjee and E. Barberis and P. Baringer and Bartlett, \{J. F.\} and U. Bassler and V. Bazterra and A. Bean and M. Begalli and L. Bellantoni and Beri, \{S. B.\} and G. Bernardi and R. Bernhard and I. Bertram and M. Besan{\c c}on and R. Beuselinck and Bhat, \{P. C.\} and S. Bhatia and V. Bhatnagar and G. Blazey and S. Blessing and K. Bloom and A. Boehnlein and D. Boline and Boos, \{E. E.\} and G. Borissov and M. Borysova and A. Brandt and O. Brandt and R. Brock and A. Bross and D. Brown and Bu, \{X. B.\} and M. Buehler",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = feb,

day = "9",

doi = "10.1103/PhysRevD.93.032002",

language = "English",

volume = "93",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Measurement of the forward-backward asymmetry of Λ and Λ ¯ production in p p ¯ collisions

AU - (D0 Collaboration)

AU - Abazov, V. M.

AU - Abbott, B.

AU - Acharya, B. S.

AU - Adams, M.

AU - Adams, T.

AU - Agnew, J. P.

AU - Alexeev, G. D.

AU - Alkhazov, G.

AU - Alton, A.

AU - Askew, A.

AU - Atkins, S.

AU - Augsten, K.

AU - Avila, C.

AU - Badaud, F.

AU - Bagby, L.

AU - Baldin, B.

AU - Bandurin, D. V.

AU - Banerjee, S.

AU - Barberis, E.

AU - Baringer, P.

AU - Bartlett, J. F.

AU - Bassler, U.

AU - Bazterra, V.

AU - Bean, A.

AU - Begalli, M.

AU - Bellantoni, L.

AU - Beri, S. B.

AU - Bernardi, G.

AU - Bernhard, R.

AU - Bertram, I.

AU - Besançon, M.

AU - Beuselinck, R.

AU - Bhat, P. C.

AU - Bhatia, S.

AU - Bhatnagar, V.

AU - Blazey, G.

AU - Blessing, S.

AU - Bloom, K.

AU - Boehnlein, A.

AU - Boline, D.

AU - Boos, E. E.

AU - Borissov, G.

AU - Borysova, M.

AU - Brandt, A.

AU - Brandt, O.

AU - Brock, R.

AU - Bross, A.

AU - Brown, D.

AU - Bu, X. B.

AU - Buehler, M.

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.

UR - https://www.scopus.com/pages/publications/84959558971

U2 - 10.1103/PhysRevD.93.032002

DO - 10.1103/PhysRevD.93.032002

M3 - Article

AN - SCOPUS:84959558971

SN - 2470-0010

VL - 93

JO - Physical Review D

JF - Physical Review D

IS - 3

M1 - 032002

ER -

Measurement of the forward-backward asymmetry of Λ and Λ ¯ production in p p ¯ collisions

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