Measurement of inclusive Ds, D0, and J/psi rates and determination of the Bs()Bs() production fraction in bb Events at the Upsilon(5S) resonance.

Drutskoy A,Abe K,Adachi I,Aihara H,Anipko D,Arinstein K, Aulchenko V,Aushev T,Banerjee S, Barberio E,Barbero M, Bedny I,Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A,Bozek A, Bracko M, Brodzicka J, Browder T E,Chang P,Chao Y,Chen A,Chen K-F,Chen W T, Cheon B G,Chistov R,Choi Y,Choi Y K, Chuvikov A,Cole S,Dalseno J, Danilov M,Dash M, Dragic J,Eidelman S,Epifanov D, Fratina S, Gabyshev N, Gershon T,Go A, Gokhroo G, Goldenzweig P, Golob B,Ha H,Haba J, Hara T, Hayasaka K,Hayashii H,Hazumi M,Heffernan D, Higuchi T,Hoshi Y,Hou S,Hou W-S,Hsiung Y B, Iijima T, Imoto A,Inami K, Ishikawa A,Itoh R,Iwasaki M,Iwasaki Y, Kang J H,Katayama N,Kawai H, Kawasaki T,Khan H R,Kichimi H, Kim S K,Kim Y J,Kinoshita K,Korpar S, Krizan P,Krokovny P,Kulasiri R,Kumar R, Kuo C C,Kuzmin A,Kwon Y-J, Lange J S,Leder G,Lee J,Lee M J,Lesiak T,Li J, Limosani A,Lin S-W,Liventsev D,Macnaughton J, Majumder G, Mandl F,Matsumoto T, Matyja A, McOnie S,Mitaroff W,Miyabayashi K,Miyake H,Miyata H, Miyazaki Y, Mizuk R, Moloney G R,Nagamine T, Nagasaka Y, Nakano E,Nakao M,Natkaniec Z,Nishida S,Nitoh O,Nozaki T,Ogawa S,Ohshima T, Okuno S,Olsen S L,Onuki Y,Pakhlov P,Pakhlova G,Park H,Park K S, Pestotnik R,Piilonen L E,Poluektov A,Sakai Y, Satoyama N,Schietinger T,Schneider O, Schwanda C,Schwartz A J,Seidl R,Senyo K, Sevior M E,Shapkin M,Shibuya H,Shwartz B, Sidorov V,Singh J B,Sokolov A, Somov A, Stanic S, Staric M, Stoeck H,Sumisawa K, Sumiyoshi T,Suzuki S,Suzuki S Y, Takasaki F,Tamai K,Tamura N,Tanaka M, Taylor G N,Teramoto Y,Tian X C,Trabelsi K, Tsukamoto T, Uehara S,Uglov T,Ueno K, Unno Y,Uno S, Urquijo P,Usov Y, Varner G,Villa S,Wang C C,Wang C H,Watanabe Y, Wiechczynski J,Won E, Xie Q L, Yabsley B D,Yamaguchi A,Yamashita Y,Yamauchi M,Yusa Y, Zhang L M,Zhang Z P, Zhilich V, Zupanc A, Null Null

Physical review letters（2007）

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摘要

The inclusive production of D(s), D(0), and J/psi mesons is studied using a 1.86 fb(-1) data sample collected on the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The number of bb events in this Upsilon(5S) data sample is determined. We measure the branching fractions B(Upsilon(5S)-->D(s)X)/2=(23.6+/-1.2+/-3.6)%, B(Upsilon(5S)-->D(0)X)/2=(53.8+/-2.0+/-3.4)%, and B(Upsilon(5S)-->J/psiX)/2=(1.030+/-0.080+/-0.067)%. From the D(s) and D(0) inclusive branching fractions the ratio f(s)=(18.0+/-1.3+/-3.2)% of B(s)(*)B(s)(*) to the total bb quark pair production at the Upsilon(5S) energy is obtained in a model-dependent way.

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Measurement of inclusive Ds, D0, and J/psi rates and determination of the Bs(*)Bs(*) production fraction in bb Events at the Upsilon(5S) resonance.

Measurement of inclusive Ds, D0, and J/psi rates and determination of the Bs()Bs() production fraction in bb Events at the Upsilon(5S) resonance.