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Studies of the decay $$ {\textrm{D}}_{\textrm{s}}^{+}\to {\textrm{K}}^{+}{\textrm{K}}^{-}{\mu}^{+}{\nu}_{\mu } $$. / The BESIII Collaboration ; Мучной, Николай Юрьевич; Николаев, Иван Борисович.
в: Journal of High Energy Physics, Том 2023, № 12, 72, 12.12.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Studies of the decay $$ {\textrm{D}}_{\textrm{s}}^{+}\to {\textrm{K}}^{+}{\textrm{K}}^{-}{\mu}^{+}{\nu}_{\mu } $$
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. n.
AU - Мучной, Николай Юрьевич
AU - Николаев, Иван Борисович
PY - 2023/12/12
Y1 - 2023/12/12
N2 - The decay is studied based on 7.33 fb−1 of e+e− collision data collected with the BESIII detector at center-of-mass energies in the range from 4.128 to 4.226 GeV. The absolute branching fraction is measured as , the most precise measurement to date. Combining with the world average of , the ratio of the branching ractions obtained is , in agreement with lepton universality. By performing a partial wave analysis, the hadronic form factor ratios at q2 = 0 are extracted, finding and , where the first uncertainties are statistical and the second are systematic. No significant S-wave contribution from f0(980) → K+K− is found. The upper limit is set at 90% credibility level.
AB - The decay is studied based on 7.33 fb−1 of e+e− collision data collected with the BESIII detector at center-of-mass energies in the range from 4.128 to 4.226 GeV. The absolute branching fraction is measured as , the most precise measurement to date. Combining with the world average of , the ratio of the branching ractions obtained is , in agreement with lepton universality. By performing a partial wave analysis, the hadronic form factor ratios at q2 = 0 are extracted, finding and , where the first uncertainties are statistical and the second are systematic. No significant S-wave contribution from f0(980) → K+K− is found. The upper limit is set at 90% credibility level.
U2 - 10.1007/JHEP12(2023)072
DO - 10.1007/JHEP12(2023)072
M3 - Article
VL - 2023
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1029-8479
IS - 12
M1 - 72
ER -
ID: 68346893