Search for the $H$ -Dibaryon in ${}^{3}H e (K^{-} {, K}^{+}) Hn$

Publisher Website

12 May 1997

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 78 (19) , 3646-3649
https://doi.org/10.1103/physrevlett.78.3646

Abstract

A high-sensitivity search for the strangeness

S = - 2

H

dibaryon

(uuddss)

was conducted at the Brookhaven Alternating Gradient Synchrotron (AGS) using the reaction

{}^{3}H e (K^{-} {, K}^{+}) Hn

at

P_{K^{-}} = 1.8 GeV / c

. The sensitivity was independent of

H

lifetime and decay modes. No evidence for

H

production was observed. In a mass range extending from about

50

to

380 MeV {/ c}^{2}

below the

Λ Λ

threshold of

2.231 GeV / c^{2}

, the resulting upper limits on the

H

-production cross section are in the range of

0.058

to

0.021 μ b / sr

, approximately 1 order of magnitude below a theoretical calculation.

Keywords

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