Analysis of d+ -> (k)over-bar(0)e(+)nu(e) and d+ -> pi(0)e(+)nu(e) semileptonic decays
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,67; Ahmed, S.14; Ai, X. C.1; Ai, X. C.; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.52; Amoroso, A.57,59; An, F. F.1 |
| 刊名 | Physical review d
 |
| 出版日期 | 2017-07-24 |
| 卷号 | 96期号:1页码:15 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.96.012002 |
| 通讯作者 | Fang, y.(fangy@ihep.ac.cn) |
| 英文摘要 | Using 2.93 fb(-1) of data taken at 3.773 gev with the besiii detector operated at the bepcii collider, we study the semileptonic decays d+ -> (k) over bar (0)e(+)nu(e) and d+ -> pi(0)e(+)nu(e). we measure the absolute decay branching fractions b(d+ -> (k) over bar (0)e(+)nu(e)) = (8.60 +/- 0.06 +/- 0.15) x 10(-2) and b(d+ -> pi(0)e(+)nu(e)) = (3.63 +/- 0.08 +/- 0.05) x 10(-3), where the first uncertainties are statistical and the second systematic. we also measure the differential decay rates and study the form factors of these two decays. with the values of |v-cs| and |v-cd| from particle data group fits assuming cabibbo-kobayashi-maskawa (ckm) unitarity, we obtain the values of the form factors at q(2) = 0, f(+)(k)(0) = 0.725 +/- 0.004 +/- 0.012, and f(+)(pi)(0) = 0.622 +/- 0.012 +/- 0.003. taking input from recent lattice qcd calculations of these form factors, we determine values of the ckm matrix elements |v-cs| = 0.944 +/- 0.005 +/- 0.015 +/- 0.024 and |v-cd| = 0.210 +/- 0.004 +/- 0.001 +/- 0.009, where the third uncertainties are theoretical. |
| WOS关键词 | FORM-FACTORS ; E(+)E(-) ; HEAVY |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000406295500001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176862 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Fang, Y. |
| 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.Bochum Ruhr Univ, D-44780 Bochum, Germany 5.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 6.Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China 7.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China 8.COMSATS Inst Informat Technol, Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan 9.GI Budker Inst Nucl Phys SB RAS BINP, 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.,Ahmed, S.,et al. Analysis of d+ -> (k)over-bar(0)e(+)nu(e) and d+ -> pi(0)e(+)nu(e) semileptonic decays[J]. Physical review d,2017,96(1):15. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Ai, X. C..,Ai, X. C..,...&Zou, J. H..(2017).Analysis of d+ -> (k)over-bar(0)e(+)nu(e) and d+ -> pi(0)e(+)nu(e) semileptonic decays.Physical review d,96(1),15. |
| MLA | Ablikim, M.,et al."Analysis of d+ -> (k)over-bar(0)e(+)nu(e) and d+ -> pi(0)e(+)nu(e) semileptonic decays".Physical review d 96.1(2017):15. |
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