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.
作者信息
Drutskoy A, Abe K, 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
机构信息
University of Cincinnati, Cincinnati, Ohio 45221, USA.
出版信息
Phys Rev Lett. 2007 Feb 2;98(5):052001. doi: 10.1103/PhysRevLett.98.052001. Epub 2007 Jan 29.
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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