Evidence for B¯ s 0 → Λ c + Λ¯ π -

Journal Article · Tue Oct 01 04:00:00 EDT 2013 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2013.08.057· OSTI ID:1337737

Solovieva, E.; Chistov, R.; Adachi, I.; Asner, David M.; Aushev, T.; Bakich, A. M.; Bala, Anu; Bhardwaj, V.; Bhuyan, Bipul; Bischofberger, M.; Bondar, A.; Bonvicini, Giovanni; Bozek, A.; Bracko, Marko; Browder, Thomas E.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, K. ; Chobanova, V.; Choi, Y.; Cinabro, David A.; Dalseno, J.; Danilov, M.; Dolezal, Z.; Drasal, Z.; Drutskoy, A.; Dutta, Deepanwita; Eidelman, S.; Epifanov, D.; Farhat, H.; Fast, James E.; Ferber, T.; Gaur, Vipin; Ganguly, Sudeshna; Gillard, R.; Goh, Y. M.; Golob, B.; Haba, J.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Huschle, Matthias J.; Hyun, H. J.; Iijima, T.; Ishikawa, A.; Itoh, R.; Iwasaki, T.; Julius, T.; Kah, D. H.; Kang, J. H.; Kawasaki, T.; Kiesling, C.; Kim, D. Y.; Kim, H. O.; Kim, J. B.; Kim, K. T.; Kim, M. J.; Kim, Y. J.; Kinoshita, Kay; Klucar, Jure; Ko, Byeong Rok; Kodys, P.; Korpar, S.; Kouzes, Richard T.; Krizan, P.; Krokovny, Pavel; Kuhr, Thomas; Kumar, R.; Kumita, T.; Kuzmin, A.; Kwon, Y. J.; Lange, J. S.; Lee, S. H.; Li, J.; Li, Y.; Liventsev, Dmitri; Lukin, P.; Matvienko, D.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Mussa, R.; Nakano, E.; Nakao, Mikihiko; Nedelkovska, E.; Nisar, N. K.; Nishida, Shohei; Nitoh, O.; Ogawa, S.; Okuno, S.; Olsen, Stephen L.; Pakhlov, P.; Pakhlova, Galina; Park, H.; Park, H. K.; Pedlar, Todd K.; Pestotnik, Rok; Petric, Marko; Piilonen, Leo E.; Prothmann, K.; Ritter, M.; Rohrken, M.; Rostomyan, A.; Ryu, S.; Sahoo, Himansu B.; Saito, Tomoyuki; Sakai, Y.; Sandilya, Saurabh; Santel, Daniel; Santelj, L.; Sanuki, T.; Savinov, Vladimir; Schneider, O.; Schnell, G.; Schwanda, C.; Senyo, K.; Sevior, ME; Shapkin, M.; Shen, C. P.; Shibata, TA; Shiu, Jing-Ge; Shwartz, B.; Sibidanov, A.; Singh, J. B.; Smerkol, P.; Sohn, Y. S.; Sokolov, A.; Stanic, S.; Staric, M.; Sumihama, M.; Tamponi, Umberto; Tanaka, Satoru; Tanida, K.; Tatishvili, Gocha; Teramoto, Y.; Tikhomirov, I.; Tsuboyama, T.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Yuji; Uno, S.; Urquijo, P.; Usov, Y.; Van Hulse, C.; Varner, Gary; Varvell, K. E.; Vinokurova, A.; Wagner, M. N.; Wang, C. H.; Wang, M. Z.; Wang, P.; Watanabe, M.; Watanabe, Y.; Williams, K. M.; Won, Eun Il; Yabsley, B. D.; Yamashita, Y.; Yashchenko, S.; Yook, Youngmin; Zhang, Z. P.; Zhilich, V.; Zupanc, A.

Using 121.4 fb^-1 of data collected with the Belle detector at the Υ(5S) resonance at the KEKB asymmetric-energy e⁺e^- collider, we report evidence for the $$\bar{B}$$⁰_s → Λ$$+\atop{c}$$$$\bar{Λ}$$π^- source decay mode with a measured branching fraction (3.6±1.1[stat] $$+0.3\atop{-0.5}$$± 0.9 [Λ$$+\atop{c}$$] ±0.7[N_{$$\bar{B}$$⁰s}]) x 10^-4 and a significance of 4.4 standard deviations. This is the first evidence for a baryonic $$\bar{B}$$⁰_s decay.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1337737
• Report Number(s): PNNL-SA--99783; KA2201020
• Journal Information: Physics Letters B, Journal Name: Physics Letters B Journal Issue: 1-3 Vol. 726; ISSN 0370-2693
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

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