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  4. Improved measurements of <i>D</i><SUP>0</SUP> → <i>K</i><SUP>-</SUP><i>l</i><SUP>+</SUP>ν<i><sub>l</sub></i> and <i>D</i><SUP>+</SUP> → (<i>K</i>)over-bar<SUP>0</SUP><i>l</i><SUP>+</SUP>ν<i><sub>l</sub></i>
 
research article

Improved measurements of D0 → K-l+νl and D+ → (K)over-bar0l+νl

Ablikim, M.
•
Achasov, M. N.
•
Adlarson, P.
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December 4, 2024
Physical Review D

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.

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Type
research article
DOI
10.1103/PhysRevD.110.112006
Web of Science ID

WOS:001381818000002

Author(s)
Ablikim, M.

Chinese Academy of Sciences

Achasov, M. N.

Budker Inst Nucl Phys SB RAS BINP

Adlarson, P.

Uppsala University

Afedulidis, O.

Ruhr University Bochum

Ai, X. C.

Zhengzhou University

Aliberti, R.

Johannes Gutenberg University of Mainz

Amoroso, A.

University of Turin

An, Q.

State Key Lab Particle Detect & Elect

Bai, Y.

Southeast University - China

Bakina, O.

Joint Institute for Nuclear Research - Russia

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Corporate authors
BESIII Collaboration
Date Issued

2024-12-04

Publisher

American Physical Society

Published in
Physical Review D
Issue

11

Article Number

112006

Subjects

CS-VERTICAL-BAR

•

FORM-FACTORS

•

DECAY-RATES

•

EXTRACTION

•

TOF

•

PI

•

Science & Technology

•

Physical Sciences

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPHE-LS  
FunderFunding(s)Grant NumberGrant 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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Available on Infoscience
January 28, 2025
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/245543
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