Precision measurement of the Ds*+-Ds+ mass difference

Precision measurement of the Ds*+-Ds+ mass difference

We have measured the vector-pseudoscalar mass splitting M(D*+s)-M(D+s)=144.22±0.47±0.37 MeV significantly more precisely than the previous world average. We minimize the systematic errors by also measuring the vector-pseudoscalar mass difference M(D*0)-M(D0) using the radiative decay D*0→D0γ, obtain...

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Bibliographic Details
Main Authors: BROWN, D.; et al., THULASIDAS, M.
Format: text
Language:English
Published: Institutional Knowledge at Singapore Management University 1994
Subjects:
Computer Engineering
Databases and Information Systems
Online Access:https://ink.library.smu.edu.sg/sis_research/5781
https://ink.library.smu.edu.sg/context/sis_research/article/6784/viewcontent/hep_ph9403327.pdf
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Institution: Singapore Management University
Language: English
Description
Summary:We have measured the vector-pseudoscalar mass splitting M(D*+s)-M(D+s)=144.22±0.47±0.37 MeV significantly more precisely than the previous world average. We minimize the systematic errors by also measuring the vector-pseudoscalar mass difference M(D*0)-M(D0) using the radiative decay D*0→D0γ, obtaining [M(D*+s)-M(D+s)]-[M(D*0)-M(D0)] =2.09±0.47±0.37 MeV. This is then combined with our previous high-precision measurement of M(D*0)-M(D0), which used the decay D*0→D0π0. We also measure the mass difference M(D+s)-M(D+)=99.5±0.6±0.3 MeV, using the φπ+ decay modes of the D+s and D+ mesons.

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