论文标题

稳定的Sexaquark:概述和发现策略

A Stable Sexaquark: Overview and Discovery Strategies

论文作者

Farrar, Glennys R.

论文摘要

中性的,风味的单线标量UDDDSS结合状态 - Sexaquark,S-可能具有足够低的质量,可以稳定或寿命长。在这里,我们回顾了质量估计和生产期望,并表明迄今为止实验室实验并不排除如此长的状态。质量低于2054 MEV的S是绝对稳定的,或者的寿命大于宇宙的年龄。在加速器实验中检测稳定的S非常具有挑战性。对实验文献的检查表明,这种有效稳定的状态将逃脱检测。长寿S的实验室限制最强的限制来自于在双重胜利的超核中的地层时间的较低限制。但是,这种约束不足以排除稳定的S。我们制定了发现它的策略。稳定的S将是一个有吸引力的暗物质候选者。简要审查了相关的天体物理和宇宙学观察结果,表明Sexaquark暗物质与所有当前知识一致。

The neutral, flavor singlet scalar uuddss bound state -- the sexaquark, S -- may have a low enough mass to be stable or extremely long-lived. Here we review mass estimates and production expectations and show that laboratory experiments to date do not rule out such a long-lived state. An S with mass below 2054 MeV is either absolutely stable or has a lifetime greater than the age of the Universe. Detection of a stable S in accelerator experiments is very challenging. An examination of the experimental literature shows that such an effectively stable state would have escaped detection. The strongest laboratory constraint on a long-lived S comes from the lower-bound on its formation time in a doubly-strange hypernucleus; this constraint is, however, not stringent enough to exclude a stable S. We develop strategies to discover it. A stable S would be an attractive dark matter candidate. Relevant astrophysical and cosmological observations, which show that sexaquark dark matter is consistent with all current knowledge, are briefly reviewed.

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