Measurement of the D∗ (2010)+-D+ Mass Difference

(BaBar Collaboration)

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We measure the mass difference, Δm+, between the D∗(2010)+ and the D+ using the decay chain D∗(2010)+→D+π0 with D+→K-π+π+. The data were recorded with the BABAR detector at center-of-mass energies at and near the I(4S) resonance, and correspond to an integrated luminosity of approximately 468 fb-1. We measure Δm+=(140 601.0±6.8[stat]±12.9[syst]) keV. We combine this result with a previous BABAR measurement of Δm0≡m(D∗(2010)+)-m(D0) to obtain ΔmD=m(D+)-m(D0)=(4824.9±6.8[stat]±12.9[syst]) keV. These results are compatible with and approximately five times more precise than the Particle Data Group averages.

Original languageEnglish
Article number202003
JournalPhysical Review Letters
Volume119
Issue number20
DOIs
StatePublished - 14 Nov 2017

Funding

FundersFunder number
CNRS-IN2P3
Marie Curie EIF
NFR
NSERC (Canada), CEA
USA-Israel
National Science Foundation1404070, 1505719
U.S. Department of Energy
Alfred P. Sloan Foundation
Science and Technology Facilities CouncilST/N000420/1
British Skin Foundation
European Commission
Deutsche Forschungsgemeinschaft
Stichting voor Fundamenteel Onderzoek der Materie
Bundesministerium für Bildung und Forschung
Ministerio de Economía y Competitividad
Instituto Nazionale di Fisica Nucleare
Ministry of Education and Science

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