Measurement of the Pseudoscalar Decay Constant fDs Using Charm-Tagged Events in e+e- Collisions at s=10.58GeV
The BABAR Collaboration, B. Aubert
Abstract
Using 230.2 fb(-1) of e+e- annihilation data collected with the BABAR detector at and near the peak of the Y(4S) resonance, 489 +/- 55 events containing the pure leptonic decay Ds+ --> mu+ numu have been isolated in charm-tagged events. The ratio of partial widths Gamma(Ds+ --> mu+ numu)/Gamma(Ds+ --> phi pi+) is measured to be 0.143 +/- 0.018 +/- 0.006 allowing a determination of the pseudoscalar decay constant fDs = (283 +/- 17 +/- 7 +/- 14) MeV. The errors are statistical, systematic, and from the Ds+ --> phi pi+ branching ratio, respectively.
Create a lesson
Related papers
Accelerating Optical Photon Simulation in DUNE with Opticks
Ilker Parmaksiz, Aaron Higuera, Laura Paulucci et al.
Search for high-mass resonances in photon-jet final states using 140 fb-1 of pp collisions at s = 13 TeV with the ATLAS detector
ATLAS Collaboration
Efficient binned profile likelihood minimization for precision measurements with RABBIT
David Walter, Josh Bendavid, Kenneth Long
A Weighting Method for Incorporating Mass Resolution Effects in Amplitude Analysis
Benhou Xiang, Wenqian Zheng, Hongxun Yang et al.
A High Performance Partial Wave Analysis Framework for Hadron Spectroscopy
Benhou Xiang, Shuangshi Fang, Beijiang Liu
Measurement of tZq inclusive and differential cross-sections in pp collisions at s = 13~TeV with the ATLAS detector
ATLAS Collaboration