/ nucl-ex arXiv:1310.6104

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

H. Sugimura\corref cor1 (JAEA, Ibaraki) ; Agnello, M. (INFN, Turin) ; Ahn, J.K. (Pusan Natl. U.) ; Ajimura, S. (Osaka U., Res. Ctr. Nucl. Phys.) ; Akazawa, Y. (Tohoku U.) ; Amano, N. (Kyoto U.) ; Aoki, K. (KEK, Tsukuba) ; Bhang, H.C. (Seoul Natl. U.) ; Chiga, N. (Tohoku U.) ; Endo, M. (Osaka U.) ; Evtoukhovitch, P. (Dubna, JINR) ; Feliciello, A. (INFN, Turin) ; Fujioka, H. (Kyoto U.) ; Fukuda, T. (Electro-Communication U., Osaka) ; Hasegawa, S. (JAEA, Ibaraki) ; Hayakawa, S. (Osaka U.) ; Honda, R. (Tohoku U.) ; Hosomi, K. (Tohoku U.) ; Hwang, S.H. (JAEA, Ibaraki) ; Ichikawa, Y. (JAEA, Ibaraki) ; Igarashi, Y. (KEK, Tsukuba) ; Imai, K. (JAEA, Ibaraki) ; Ishibashi, N. (Osaka U.) ; Iwasaki, R. (KEK, Tsukuba) ; Joo, C.W. (Seoul Natl. U.) ; Kiuchi, R. (JAEA, Ibaraki) ; Lee, J.K. (Pusan Natl. U.) ; Lee, J.Y. (Seoul Natl. U.) ; Matsuda, K. (Osaka U.) ; Matsumoto, Y. (Tohoku U.) ; Matsuoka, K. (Osaka U.) ; Miwa, K. (Tohoku U.) ; Mizoi, Y. (Electro-Communication U., Osaka) ; Moritsu, M. (Osaka U., Res. Ctr. Nucl. Phys.) ; Nagae, T. (Kyoto U.) ; Nagamiya, S. (JAEA, Ibaraki) ; Nakagawa, M. (Osaka U.) ; Naruki, M. (Kyoto U.) ; Noumi, H. (Osaka U., Res. Ctr. Nucl. Phys.) ; Ota, R. (Osaka U.) ; Roy, B.J. (Bhabha Atomic Res. Ctr.) ; Saha, P.K. (JAEA, Ibaraki) ; Sakaguchi, A. (Osaka U.) ; Sako, H. (JAEA, Ibaraki) ; Samanta, C. (Washington - Lee U.) ; Samoilov, V. (Dubna, JINR) ; Sasaki, Y. (Tohoku U.) ; Sato, S. (JAEA, Ibaraki) ; Sekimoto, M. (KEK, Tsukuba) ; Shimizu, Y. (Electro-Communication U., Osaka) ; Shiozaki, T. (Tohoku U.) ; Shirotori, K. (Osaka U., Res. Ctr. Nucl. Phys.) ; Soyama, T. (Osaka U.) ; Takahashi, T. (KEK, Tsukuba) ; Takahashi, T.N. (Wako, RIKEN) ; Tamura, H. (Tohoku U.) ; Tanabe, K. (Tohoku U.) ; Tanaka, T. (Osaka U.) ; Tanida, K. (Seoul Natl. U.) ; Tokiyasu, A.O. (Osaka U., Res. Ctr. Nucl. Phys.) ; Tsamalaidze, Z. (Dubna, JINR) ; Ukai, M. (Tohoku U.) ; Yamamoto, T.O. (Tohoku U.) ; Yamamoto, Y. (Tohoku U.) ; Yang, S.B. (Seoul Natl. U.) ; Yoshida, K. (Osaka U.)

Pages: 6

Abstract: 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.

Web-Page: http://inspirehep.net/record/1261937/files/CrossSectionSigmaNComp.png; http://inspirehep.net/record/1261937/files/ExcitationEnergy12CL_10.png; http://inspirehep.net/record/1261937/files/MissMassH6Lboth14.png; http://inspirehep.net/record/1261937/files/schematic_view6.png; http://inspirehep.net/record/1261937/files/soukan7.png; http://inspirehep.net/record/1261937/files/arXiv:1310.6104.pdf

Note: *Brief entry*; 6 pages, 5 figures, submitted to Physics Letters B

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