Search for $^6_\Lambda$H hypernucleus by the $^6$Li$(\pi^-,K^+)$ reaction at $p_{\pi^-}$ = 1.2 GeV/$c$

arxiv: 1310.6104 · v2 · pith:ZZV4GGCZnew · submitted 2013-10-23 · ⚛️ nucl-ex

Search for ⁶_ΛH hypernucleus by the ⁶Li(π^-,K^+) reaction at p_{π^-} = 1.2 GeV/c

H.Sugimura , M.Agnello , J.K.Ahn , S.Ajimura , Y.Akazawa , N.Amano , K.Aoki , H.C.Bhang

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N.Chiga M.Endo P.Evtoukhovitch A.Feliciello H.Fujioka T.Fukuda S.Hasegawa S.Hayakawa R.Honda K.Hosomi S.H.Hwang Y.Ichikawa Y.Igarashi K.Imai N.Ishibashi R.Iwasaki C.W.Joo R.Kiuchi J.K.Lee J.Y.Lee K.Matsuda Y.Matsumoto K.Matsuoka K.Miwa Y.Mizoi M.Moritsu T.Nagae S.Nagamiya M.Nakagawa M.Naruki H.Noumi R.Ota B.J.Roy P.K.Saha A.Sakaguchi H.Sako C.Samanta V.Samoilov Y.Sasaki S.Sato M.Sekimoto Y.Shimizu T.Shiozaki K.Shirotori T.Soyama T.Takahashi T.N.Takahashi H.Tamura K.Tanabe T.Tanaka K.Tanida A.O.Tokiyasu Z.Tsamalaidze M.Ukai T.O.Yamamoto Y.Yamamoto S.B.Yang K.Yoshida

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keywords lambdahypernucleusestimatedreactionsearchabovebelowbound

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We have carried out an experiment to search for a neutron-rich hypernucleus, $^6_{\Lambda}$H, by the $^6$Li($\pi^-,K^+$) reaction at $p_{\pi^-}$ =1.2 GeV/$c$. The obtained missing mass spectrum with an estimated energy resolution of 3.2 MeV (FWHM) showed no peak structure corresponding to the $^6_{\Lambda}$H hypernucleus neither below nor above the $^4_{\Lambda}$H$+2n$ particle decay threshold. An upper limit of the production cross section for the bound $^6_{\Lambda}$H hypernucleus was estimated to be 1.2 nb/sr at 90% confidence level.

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Search for ⁶_ΛH hypernucleus by the ⁶Li(π^-,K^+) reaction at p_{π^-} = 1.2 GeV/c

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