Search for d-0 -> gamma gamma and improved measurement of the branching fraction for d-0 -> pi(0)pi(0)
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,59; Ai, X. C.1; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.48; Amoroso, A.52,54; An, F. F.1; An, Q.49; Bai, J. Z.1 |
| 刊名 | Physical review d
 |
| 出版日期 | 2015-06-26 |
| 卷号 | 91期号:11页码:10 |
| ISSN号 | 1550-7998 |
| DOI | 10.1103/physrevd.91.112015 |
| 英文摘要 | Using 2.92 fb(-1) of electron-positron annihilation data collected at root s = 3.773 gev with the besiii detector, we report the results of a search for the flavor-changing neutral current process d-0 -> gamma gamma using a double-tag technique. we find no signal and set an upper limit at 90% confidence level for the branching fraction of b(d-0 -> gamma gamma < 3.8 x 10(-6). we also investigate d-0-meson decay into two neutral pions, obtaining a branching fraction of b(d-0 -> pi(0)pi(0)) = (8.24 +/- 0.21(stat) +/- 0.30(syst)) x 10(-4), the most precise measurement to date and consistent with the current world average. |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000356928900002 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/1639615 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Ablikim, M. |
| 作者单位 | 1.Inst High Energy Phys, Beijing 100049, Peoples R China 2.Beihang Univ, Beijing 100191, Peoples R China 3.Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China 4.Ruhr Univ Bochum, D-44780 Bochum, Germany 5.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 6.Cent China Normal Univ, Wuhan 430079, Peoples R China 7.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China 8.COMSATS Inst Informat Technol, Lahore 54000, Pakistan 9.RAS, GI Budker Inst Nucl Phys, SB, Novosibirsk 630090, Russia 10.GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany |
| 推荐引用方式 GB/T 7714 | Ablikim, M.,Achasov, M. N.,Ai, X. C.,et al. Search for d-0 -> gamma gamma and improved measurement of the branching fraction for d-0 -> pi(0)pi(0)[J]. Physical review d,2015,91(11):10. |
| APA | Ablikim, M..,Achasov, M. N..,Ai, X. C..,Albayrak, O..,Albrecht, M..,...&Zou, J. H..(2015).Search for d-0 -> gamma gamma and improved measurement of the branching fraction for d-0 -> pi(0)pi(0).Physical review d,91(11),10. |
| MLA | Ablikim, M.,et al."Search for d-0 -> gamma gamma and improved measurement of the branching fraction for d-0 -> pi(0)pi(0)".Physical review d 91.11(2015):10. |
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来源：高能物理研究所
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