Determination of the Strong Phase in D0→K+π- Using Quantum-Correlated Measurements
Creators
- Rosner, J. L.1
- Alexander, J. P.2
- Cassel, D. G.2
- Duboscq, J. E.2
- Ehrlich, R.2
- Fields, L.2
- Gibbons, L.2
- Gray, R.2
- Gray, S. W.2
- Hartill, D. L.2
- Heltsley, B. K.2
- Hertz, D.2
- Jones, C. D.2
- Kandaswamy, J.2
- Kreinick, D. L.2
- Kuznetsov, V. E.2
- Mahlke-Krueger, H.2
- Mohapatra, D.2
- Onyisi, P. U. E.2
- Patterson, J. R.2
- and others
- CLEO Collaboration
- 1. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
- 2. Cornell University, Ithaca, New York 14853 (United States)
Description
We exploit the quantum coherence between pair-produced D0 and D0 in ψ(3770) decays to study charm mixing, which is characterized by the parameters x and y, and to make a first determination of the relative strong phase δ between D0→K+π- and D0→K+π-. Using 281 pb-1 of e+e- collision data collected with the CLEO-c detector at Ecm=3.77 GeV, as well as branching fraction input and time-integrated measurements of RM≡(x2+y2)/2 and RWS≡Γ(D0→K+π-)/Γ(D0→K+π-) from other experiments, we find cosδ=1.03-0.17+0.31±0.06, where the uncertainties are statistical and systematic, respectively. By further including other mixing parameter measurements, we obtain an alternate measurement of cosδ=1.10±0.35±0.07, as well as xsinδ=(4.4-1.8+2.7±2.9)x10-3 and δ=(22-12-11+11+9) deg
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.100.221801;
- arXiv
- arXiv:0802.2264v2;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 100
- Journal Issue
- 22
- Journal Page Range
- p. 221801-221801.6
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40013602
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BRANCHING RATIO; CESR STORAGE RING; D NEUTRAL MESONS; ELECTRON-POSITRON COLLISIONS; MULTIPARTICLE SPECTROMETERS; PAIR PRODUCTION; PARTICLE DECAY; PARTICLE IDENTIFICATION; PIONS MINUS; PSI-3770 MESONS
- Descriptors DEC
- BOSONS; CHARM PARTICLES; CHARMED MESONS; CHARMONIUM; COLLISIONS; D MESONS; DECAY; DIMENSIONLESS NUMBERS; ELECTRON COLLISIONS; ELEMENTARY PARTICLES; HADRONS; INTERACTIONS; MEASURING INSTRUMENTS; MESONS; PARTICLE PRODUCTION; PIONS; POSITRON COLLISIONS; PSEUDOSCALAR MESONS; QUARKONIUM; SPECTROMETERS; STORAGE RINGS; VECTOR MESONS
Optional Information
- Notes
- (c) 2008 The American Physical Society
- Collaborations
- CLEO Collaboration