Extracting CP violation and strong phase in D decays by using quantum correlations in {psi}(3770){yields}D{sup 0}D{sup 0{yields}}(V{sub 1}V{sub 2})(V{sub 3}V{sub 4}) and {psi}(3770){yields}D{sup 0}D{sup 0{yields}}(V{sub 1}V{sub 2})(K{pi})
- Centre de Physique Theorique, CNRS and Universite Aix-Marseille 1 et 2 and Sud Toulon-Var (UMR 6207), Luminy Case 907, 13288 Marseille Cedex 9 (France)
- Laboratoire de Physique Theorique, CNRS and Universite Paris-Sud 11 (UMR 8627), 91405 Orsay Cedex (France)
- Institute of High Energy Physics, P.O. Box 918, Beijing 100049 (China)
- Department of Physics, Henan Normal University, Xinxiang 453007 (China)
The charm quark offers interesting opportunities to cross check the mechanism of CP violation precisely tested in the strange and beauty sectors. In this paper, we exploit the angular and quantum correlations in the DD pairs produced through the decay of the {psi}(3770) resonance in a charm factory to investigate CP-violation in two different ways. We build CP-violating observables in {psi}(3770){yields}DD{yields}(V{sub 1}V{sub 2})(V{sub 3}V{sub 4}) to isolate specific new physics effects in the charm sector. We also consider the case of {psi}(3770){yields}DD{yields}(V{sub 1}V{sub 2})(K{pi}) decays, which provide a new way to measure the strong phase difference {delta} between Cabibbo- favored and doubly-Cabibbo suppressed D decays required in the determination of the Cabibbo-Kobayashi-Maskawa quark-mixing matrix angle {gamma}. Neglecting the systematics, we give a first rough estimate of the sensitivities of these measurements at BES-III with an integrated luminosity of 20 fb{sup -1} at {psi}(3770) peak and at a future Super {tau}-charm factory with a luminosity of 10{sup 35} cm{sup -2} s{sup -1}.
- OSTI ID:
- 21409864
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevD.81.054032; (c) 2010 The American Physical Society; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANGULAR CORRELATION
CP INVARIANCE
LUMINOSITY
MIXING
PAIR PRODUCTION
PARTICLE DECAY
PSI-3770 MESONS
QUARKS
RESONANCE
SENSITIVITY
BOSONS
CHARMONIUM
CORRELATIONS
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
MESONS
OPTICAL PROPERTIES
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
QUARKONIUM
VECTOR MESONS