Search for the H-Dibaryon in 3 He\(K - ,K + \)Hn
Search for the H-Dibaryon in 3 He\(K - ,K + \)Hn
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搜索 3 He(K - ,K )Hn 中的 H-二重子
DOI：
10.1103/physrevlett.78.3646
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发表时间：
1997
影响因子：
8.6
通讯作者：
R. Zybert
中科院分区：
文献类型：
--
作者：
R. Stotzer;T. Bürger;P. D. Barnes;B. Bassalleck;A. Berdoz;M. Burger;R. Chrien;C. Davis;G. Diebold;H. En’yo;H. Fischer;G. Franklin;J. Franz;L. Gan;D. Gill;T. Iijima;K. Imai;P. Korán;M. Landry;L. Lee;J. Lowe;R. Magahiz;A. Masaike;R. McCrady;F. Merrill;C. Meyer;J. Nelson;K. Okada;S. Page;P. Pile;B. Quinn;W. Ramsay;E. Rössle;A. Rusek;R. Sawafta;H. Schmitt;R. Schumacher;R. Stearns;I. Sukaton;R. Sutter;J. Szymanski;F. Takeutchi;W. Oers;D. Wolfe;Kazuhiro Yamamoto;M. Yosoi;V. Zeps;R. Zybert
在布鲁克海文交替梯度同步加速器（AGS）上，利用P K−= 1.8 GeV/c的反应H 3 e（K−，K+）Hn，进行了对奇异S=− 2 H二重子（uuddss）的高灵敏度搜索。灵敏度与H寿命和衰变方式无关。没有观察到H产生的证据。在低于2.231 GeV/c2的Λ Λ阈值的约50至380 MeV/c2的质量范围内，H产生截面的上限在0.058至0.021 μ B/sr的范围内，比理论计算低约1个数量级。
A high-sensitivity search for the strangeness S=− 2 H dibaryon (uuddss) was conducted at the Brookhaven Alternating Gradient Synchrotron (AGS) using the reaction H 3 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.