Antideuteron yield at the AGS and coalescence implications

T A Armstrong; K N Barish; S Batsouli; S J Bennett; M Bertaina; A Chikanian; S D Coe; T M Cormier; R Davies; C B Dover; P Fachini; B Fadem; L E Finch; N K George; S V Greene; P Haridas; J C Hill; A S Hirsch; R Hoversten; H Z Huang; H Jaradat; B S Kumar; T Lainis; J G Lajoie; Q Li; B Libby; R D Majka; T E Miller; M G Munhoz; J L Nagle; I A Pless; J K Pope; N T Porile; C A Pruneau; MSZ Rabin; J D Reid; A Rimai; A Rose; F S Rotondo; J Sandweiss; R P Scharenberg; A J Slaughter; G A Smith; M L Tincknell; W S Toothacker; G Van Buren; F K Wohn; Z Xu

doi:10.1103/PhysRevLett.85.2685

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Antideuteron yield at the AGS and coalescence implications

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Antideuteron yield at the AGS and coalescence implications

T A Armstrong, K N Barish, S Batsouli, S J Bennett, M Bertaina, A Chikanian, S D Coe, T M Cormier, R Davies, C B Dover, …

Physical review letters, Vol.85(13), pp.2685-2688

09/25/2000

DOI: https://doi.org/10.1103/PhysRevLett.85.2685

PMID: 10991208

Abstract

Physics, Multidisciplinary

Science & Technology

Physical Sciences

Physics

We present Experiment 864's measurement of invariant antideuteron yields in 11.5A GeV/c Au + Pt collisions. The analysis includes 250 X 10(6) triggers representing 14 X 10(9) 10% central interactions sampled for events with high mass candidates. We find (1/2 pi p(t))d(2)N/dyd(Pt) = 3.5 +/- 1.5(stat)(-0.5)(+0.9) (syst) X 10(-8) GeV-2 c(2) for 1.8 < y < 2.2, [p(t)] = 0.35 GeV/e (y(c.m.) = 1.6) and 3.7 +/- 2.7(stat)(-1.5)(+1.4)(syst) X 10(-8) GeV-2 c(2) for 1.4 < y < 1.8, [p(t)] = 0.26 GeV/c, and a coalescence parameter (B) over bar(2) of 4.1 +/- 2.9(stat)(-2.4)(+2.3)(syst) X 10(-3) CeV(2)c(-3). Implications for coalescence and antimatter annihilation are discussed.

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Title: Antideuteron yield at the AGS and coalescence implications
Author/Creator: T A Armstrong - Pennsylvania State University
K N Barish - Yale University
S Batsouli - Yale University
S J Bennett - Wayne State University
M Bertaina - Massachusetts Institute of Technology
A Chikanian - Yale University
S D Coe - Yale University
T M Cormier - Wayne State University
R Davies - University of Denver
C B Dover - Brookhaven National Laboratory
P Fachini - Wayne State University
B Fadem - Iowa State University
L E Finch - Yale University
N K George - Yale University
S V Greene - Vanderbilt University
P Haridas - Massachusetts Institute of Technology
J C Hill - Iowa State University
A S Hirsch - Purdue University West Lafayette
R Hoversten - Iowa State University
H Z Huang - University of California, Los Angeles
H Jaradat - Yale University
B S Kumar - University of New Haven
T Lainis - Iowa State University
J G Lajoie - University of New Haven
Q Li - Vanderbilt University
B Libby - Brookhaven National Laboratory
R D Majka - Purdue University West Lafayette
T E Miller - Vanderbilt University
M G Munhoz - Wayne State University
J L Nagle - University of New Haven
I A Pless - Yale University
J K Pope - University of New Haven
N T Porile - Purdue University West Lafayette
C A Pruneau - Wayne State University
MSZ Rabin
J D Reid - Pennsylvania State University
A Rimai - Institut de Physique
A Rose - Vanderbilt University
F S Rotondo - University of New Haven
J Sandweiss - Iowa State University
R P Scharenberg - Purdue University West Lafayette
A J Slaughter - University of New Haven
G A Smith - Pennsylvania State University
M L Tincknell - Purdue University West Lafayette
W S Toothacker - Pennsylvania State University
G Van Buren - Vanderbilt University
F K Wohn - Iowa State University
Z Xu - University of New Haven
Publication Details: Physical review letters, Vol.85(13), pp.2685-2688
Publisher: Amer Physical Soc
Number of pages: 4
Academic Unit: Physics
Language: English
Resource Type: Journal article
Record Identifier: 991015178399103691

Antideuteron yield at the AGS and coalescence implications

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