Measurements of branching fractions of leptonic and hadronic Ds+ meson decays and extraction of the Ds+ meson decay constant

被引：0

作者：

Zupanc, A. ^{[24
]}

Adachi, I. ^{[14
]}

Aihara, H. ^{[59
]}

Arinstein, K. ^{[3
,4
]}

Asner, D. M. ^{[46
]}

Aushev, T. ^{[21
]}

Bakich, A. M. ^{[53
]}

Bala, A. ^{[47
,54
]}

Bhuyan, B. ^{[16
]}

Bonvicini, G. ^{[65
]}

Bozek, A. ^{[42
]}

Bracko, M. ^{[22
,31
]}

Brodzicka, J. ^{[42
]}

Browder, T. E. ^{[13
]}

Chang, M. -C. ^{[9
]}

Chang, P. ^{[41
]}

Chekelian, V. ^{[32
]}

Chen, A. ^{[39
]}

Chen, P. ^{[41
]}

Cheon, B. G. ^{[12
]}

Chilikin, K. ^{[21
]}

Chistov, R. ^{[21
]}

Cho, K. ^{[25
]}

Chobanova, V. ^{[32
]}

Choi, S. -K. ^{[11
]}

Choi, Y. ^{[52
]}

Cinabro, D. ^{[65
]}

Dalseno, J. ^{[32
,55
]}

Danilov, M. ^{[13
,34
]}

Dolezal, Z. ^{[5
]}

Drasal, Z. ^{[5
]}

Dutta, D. ^{[16
]}

Eidelman, S. ^{[3
,4
]}

Farhat, H. ^{[65
]}

Fast, J. E. ^{[46
]}

Ferber, T. ^{[8
]}

Gaur, V. ^{[54
]}

Gabyshev, N. ^{[3
,4
]}

Ganguly, S. ^{[65
]}

Gillard, R. ^{[65
]}

Goh, Y. M. ^{[12
]}

Golob, B. ^{[22
,29
]}

Haba, J. ^{[14
]}

Hara, T. ^{[14
]}

Hayasaka, K. ^{[37
]}

Hayashii, H. ^{[38
]}

Horii, Y. ^{[37
]}

Hoshi, Y. ^{[57
]}

Hou, W. -S. ^{[41
]}

Hsiung, Y. B. ^{[41
]}

机构：

[1] Univ Basque Country UPV EHU, Bilbao 48080, Spain

[2] Beihang Univ, Beijing 100191, Peoples R China

[3] Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia

[4] Novosibirsk State Univ, Novosibirsk 630090, Russia

[5] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic

[6] Chiba Univ, Chiba 2638522, Japan

[7] Univ Cincinnati, Cincinnati, OH 45221 USA

[8] DESY, D-22607 Hamburg, Germany

[9] Fu Jen Catholic Univ, Dept Phys, Taipei 24205, Taiwan

[10] Univ Giessen, D-35392 Giessen, Germany

[11] Gyeongsang Natl Univ, Chinju 660701, South Korea

[12] Hanyang Univ, Seoul 133791, South Korea

[13] Univ Hawaii, Honolulu, HI 96822 USA

[14] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[15] Ikerbasque, Bilbao 48011, Spain

[16] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India

[17] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[18] Inst High Energy Phys, Protvino 142281, Russia

[19] Inst High Energy Phys, A-1050 Vienna, Austria

[20] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[21] Inst Theoret & Expt Phys, Moscow 117218, Russia

[22] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[23] Kanagawa Univ, Yokohama, Kanagawa 2218686, Japan

[24] Karlsruher Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany

[25] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea

[26] Korea Univ, Seoul 136713, South Korea

[27] Kyungpook Natl Univ, Taegu 702701, South Korea

[28] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[29] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[30] Luther Coll, Decorah, IA 52101 USA

[31] Univ Maribor, SLO-2000 Maribor, Slovenia

[32] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[33] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[34] Moscow Engn Phys Inst, Moscow 115409, Russia

[35] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

[36] Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648602, Japan

[37] Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi 4648602, Japan

[38] Nara Womens Univ, Nara 6308506, Japan

[39] Natl Cent Univ, Chungli 32054, Taiwan

[40] Natl United Univ, Miaoli 36003, Taiwan

[41] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[42] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[43] Nippon Dent Univ, Niigata 9518580, Japan

[44] Niigata Univ, Niigata 9502181, Japan

[45] Osaka City Univ, Osaka 5588585, Japan

[46] Pacific NW Natl Lab, Richland, WA 99352 USA

[47] Panjab Univ, Chandigarh 160014, India

[48] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[49] Univ Sci & Technol China, Hefei 230026, Peoples R China

[50] Seoul Natl Univ, Seoul 151742, South Korea

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 09期

基金：

中国国家自然科学基金; 澳大利亚研究理事会; 日本学术振兴会; 新加坡国家研究基金会; 奥地利科学基金会; 美国国家科学基金会; 瑞士国家科学基金会;

关键词：

e plus -e- Experiments; Charm physics; Branching fraction; Flavor physics; Rare decay;

D O I：

10.1007/JHEP09(2013)139

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present measurements of absolute branching fractions of hadronic and leptonic D-s(+) decays to K-K+pi(+), ($) over bar (0) ($) over bar (+), eta pi(+), mu(+)nu(mu) and tau(+)nu(tau) and report a search for the leptonic D-s(+) -> e(+) nu(e) decays. The results are obtained from a data sample of 913 fb(-1) collected at or near the gamma (4S) and gamma (5S) resonances with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. The branching fractions of hadronic decays are measured to be B(D-s(+) -> K-K+pi(+)) = (5.06 +/- 0: 15 +/- 0.21)%, B(D-s(+) -> ($) over bar (0) ($) over bar (+)) = (2.95 +/- 0.11 +/- 0.09)%, B(D-s(+) -> eta pi(+)) = (1.82 +/- 0.14 +/- 0.07)%, where the fi rst and second uncertainties are statistical and systematic, respectively. The branching fractions of leptonic decays are measured to be B(D-s(+) -> mu(+)nu(mu)) = (0.531 +/- 0.028 +/- 0.020)%, B(D-s(+) -> tau(+)nu(tau)) = (5.70 +/- 0.21(-0.30)(+0.31))%, which are combined to determine the D-s(+) meson decay constant fD(s) = (255.5 +/- 4.2 +/- 5.1) MeV. We find no significant signal for D-s(+) -> e(+)nu(e) decays and set an upper limit of B(D-s(+) -> e(+)nu(e)) < 1.0(0.83) +/- 10(-4) at 95% (90%) con fi dence level.

引用

页数：35

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