Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Improved measurement of the semileptonic decay Ds+→K0e+νe. / The BESIII Collaboration ; Николаев, Иван Борисович; Мучной, Николай Юрьевич.
в: Physical Review D, Том 110, № 5, 052012, 30.09.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Improved measurement of the semileptonic decay Ds+→K0e+νe
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. n.
AU - Adlarson, P.
AU - Afedulidis, O.
AU - Ai, X. c.
AU - Aliberti, R.
AU - Amoroso, A.
AU - An, Q.
AU - Bai, Y.
AU - Bakina, O.
AU - Balossino, I.
AU - Ban, Y.
AU - Bao, H.-R.
AU - Batozskaya, V.
AU - Begzsuren, K.
AU - Berger, N.
AU - Berlowski, M.
AU - Bertani, M.
AU - Bettoni, D.
AU - Bianchi, F.
AU - Bianco, E.
AU - Bortone, A.
AU - Briere, R. a.
AU - Brueggemann, A.
AU - Николаев, Иван Борисович
AU - Мучной, Николай Юрьевич
PY - 2024/9/30
Y1 - 2024/9/30
N2 - Analyzing e+e- collision data corresponding to an integrated luminosity of 7.33 fb-1 collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we measure the branching fraction of the semileptonic decay Ds+→K0e+νe to be (2.98±0.23stat±0.12syst)×10-3. Based on fit to the partial decay rates in various q2 intervals, the product value of Ds+→K0 hadronic form factor and Cabibbo-Kobayashi-Maskawa element is measured to be f+K0(0)|Vcd|=0.143±0.011stat±0.003syst. With |Vcd|=0.22486±0.00067 as an input, the hadronic form factor is evaluated to be f+K0(0)=0.636±0.049stat±0.013syst. The branching fraction and form factor measurements are factors of 1.6 and 1.7 more precise than the previous world averages, respectively.
AB - Analyzing e+e- collision data corresponding to an integrated luminosity of 7.33 fb-1 collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we measure the branching fraction of the semileptonic decay Ds+→K0e+νe to be (2.98±0.23stat±0.12syst)×10-3. Based on fit to the partial decay rates in various q2 intervals, the product value of Ds+→K0 hadronic form factor and Cabibbo-Kobayashi-Maskawa element is measured to be f+K0(0)|Vcd|=0.143±0.011stat±0.003syst. With |Vcd|=0.22486±0.00067 as an input, the hadronic form factor is evaluated to be f+K0(0)=0.636±0.049stat±0.013syst. The branching fraction and form factor measurements are factors of 1.6 and 1.7 more precise than the previous world averages, respectively.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85206307386&origin=inward&txGid=f9d6fc36ce939fef42c4ad0365487398
U2 - 10.1103/PhysRevD.110.052012
DO - 10.1103/PhysRevD.110.052012
M3 - Article
VL - 110
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 5
M1 - 052012
ER -
ID: 62704592