Observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370).

Li J,Aihara H,Arinstein K,Aulchenko V,Aushev T,Aziz T,Bakich A M,Balagura V,Barberio E,Belous K,Bhardwaj V,Bhuyan B,Bozek A,Bračko M,Brovchenko O,Browder T E,Chang P,Chen A,Chen P,Cheon B G,Chiang C-C,Chistov R,Cho I-S,Cho K,Choi S-K,Choi Y,Dalseno J,Doležal Z,Drutskoy A,Eidelman S,Esen S,Feindt M,Gaur V,Gabyshev N,Garmash A,Golob B,Ha H,Haba J,Hara T,Hayashii H,Horii Y,Hoshi Y,Hou W-S,Hsiung Y B,Hyun H J,Iijima T,Ishikawa A,Itoh R,Iwasaki Y,Iwashita T,Julius T,Kang J H,Kapusta P,Katayama N,Kawasaki T,Kichimi H,Kiesling C,Kim H J,Kim H O,Kim M J,Kim S K,Kim Y J,Kinoshita K,Ko B R,Kobayashi N,Korpar S,Križan P,Kuhr T, Kumar R,Kumita T,Kuzmin A,Kwon Y-J,Lange J S,Lee M J,Lee S-H,Lim C-L,Liu C,Liventsev D,Louvot R,MacNaughton J,Matyja A,McOnie S,Miyabayashi K,Miyata H,Miyazaki Y,Mohanty G B,Moll A,Nakano E,Nakao M,Nakazawa H,Natkaniec Z,Neubauer S,Nishida S,Nishimura K,Nitoh O,Nozaki T,Ohshima T,Okuno S,Olsen S L,Pakhlov P,Pakhlova G,Park C W,Park H,Park H K,Pestotnik R,Petrič M,Piilonen L E,Poluektov A,Prim M,Prothmann K,Röhrken M,Rozanska M,Ryu S,Sahoo H,Sakai Y,Schneider O,Schwanda C,Schwartz A J,Seidl R,Senyo K,Sevior M E,Shapkin M,Shebalin V,Shen C P,Shiu J-G,Shwartz B,Simon F,Singh J B,Smerkol P,Sohn Y-S,Sokolov A,Solovieva E,Stanič S,Starič M,Stypula J,Sumihama M,Sumiyoshi T,Suzuki S,Tanaka S,Teramoto Y,Trabelsi K,Uchida M,Uehara S,Unno Y,Uno S,Ushiroda Y,Usov Y,Vahsen S E,Varner G,Vinokurova A,Vossen A,Wang C H,Wang M-Z,Watanabe M,Watanabe Y,Wicht J,Williams K M,Won E,Yabsley B D,Yamashita Y,Zander D,Zhang C C,Zhang Z P,Zhilich V,Zhou P,Zhulanov V,Zupanc A, Null Null

Physical review letters（2011）

Cited 22|Views10

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Abstract

We report the observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370), which are CP eigenstate decay modes. These results are obtained from 121.4 fb⁻¹ of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e(+)e⁻ collider. We measure the branching fractions B(B(s)⁰→J/ψf₀(980); f₀(980)→π(+)π⁻)=(1.16(-0.19)(+0.31)(stat)(-0.17)(+0.15)(syst)(-0.18)(+0.26)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 8.4σ, and B(B(s)⁰→J/ψf₀(1370); f₀(1370)→π(+)π⁻)=(0.34(-0.14)(+0.11)(stat)(-0.02)(+0.03)(syst)(-0.05)(+0.08)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 4.2σ. The last error listed is due to uncertainty in the number of produced B(s)((*))B(s)((*)) pairs.

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