Improved measurements of D0 → K-l+νl and D+ → (K)over-bar0l+νl
Using 7.93 fb(-1) of e(+)e(-) collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we measure the absolute branching fractions of D-0 -> K(-)e(+)nu(e), D-0 -> K- mu(+)nu(mu), D+ -> (K) over bar (0) e(+)nu(e), and D+ -> (K) over bar (0) mu(+)nu(mu) to be (3.521 +/- 0.009(stat) +/- 0.016(syst))%, (3.419 +/- 0.011(stat) +/- 0.016(syst))%, (8.864 +/- 0.039(stat) +/- 0.082s(yst))%, and (8.665 +/- 0.046(stat) +/- 0.084(syst) )%, respectively. By performing a simultaneous fit to the partial decay rates of these four decays, the product of the hadronic form factor f(+)(K) (0) and the modulus of the c -> s Cabibbo-Kobayashi-Maskawa matrix element |V-cs| is determined to be f(+)(K) (0) |V-cs| = 0.7171 +/- 0.0011(stat) +/- 0.0013(syst). Taking the value of |V-cs| = 0.97349 +/- 0.00016 from the standard model global fit or that of f(+)(K) (0) = 0.7452 +/- 0.0031 from the lattice quantum chromodynamics calculation as input, we derive the results f(+)(K) (0) = 0.7366 +/- 0.0011(stat) +/- 0.0013(syst). and |V-cs| = 0.9623 +/- 0.0015(stat) +/- 0.0017(syst) +/- 0.0040LQCD.
WOS:001381818000002
Chinese Academy of Sciences
Budker Inst Nucl Phys SB RAS BINP
Uppsala University
Ruhr University Bochum
Zhengzhou University
Johannes Gutenberg University of Mainz
University of Turin
State Key Lab Particle Detect & Elect
Southeast University - China
Joint Institute for Nuclear Research - Russia
2024-12-04
11
112006
REVIEWED
EPFL
| Funder | Funding(s) | Grant Number | Grant URL |
National Key R&D Program of China | 2020YFA0406000;2023YFA1606400;2020YFA0406300 | ||
National Natural Science Foundation of China (NSFC) | 11635010;11735014;11935015;11935016;11935018;12025502;12035009;12035013;12061131003;12192260;12192261;12192262;12192263;12192264;12192265;12221005;12225509;12235017;12361141819 | ||
Chinese Academy of Sciences | |||
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