Measuring B{sub s} width difference at the {Upsilon}(5s) using quantum entanglement

Journal Article · Sun Aug 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.036003· OSTI ID:21432913

Atwood, David; Soni, Amarjit ^[1]

---

1. Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)

About 90% of B{sub s}B{sub s} pairs produced at the {Upsilon}(5s) resonance are initially B{sub s}{sup *}B{sub s}{sup *} pairs which decay radiatively to B{sub s}B{sub s}. This implies that the B{sub s}B{sub s} pair will then be in an eigenstate of charge conjugation (i.e. C=-1) and therefore in an entangled state. This allows for a determination of {Delta}{Gamma}{sub s}/{Gamma}{sub s} and the CP phase using a number of possible correlations between the decays of the two B{sub s} mesons. In particular, we consider the time integrated correlation, the time ordering asymmetry, and the time ordering-charge asymmetry, which in addition to time ordering distinguishes B{sub s} from B{sub s}, for various combinations of final states. With the statistics of about O(10{sup 7}-10{sup 8}) {Upsilon}(5s) events available at B factories, we find that the time ordering asymmetry between suitably defined hadronic and flavor specific (tagging) decays offers a promising method for determining the width difference. The corresponding time ordering-charge asymmetry can also bound the mixing phase. Similar observables involving exclusive decays are also considered. At the super B factories with O(50) times greater luminosity time ordering and time ordering-charge asymmetries between inclusive and exclusive modes may also provide additional bounds on the phases in those decays.

• OSTI ID: 21432913
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevD.82.036003; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B S MESONS
CORRELATIONS
FLAVOR MODEL
LUMINOSITY
MESON FACTORIES
MESON-MESON INTERACTIONS
MESONS
MIXING
PAIR PRODUCTION
PARTICLE DECAY
QUANTUM ENTANGLEMENT
RESONANCE
ACCELERATORS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
PSEUDOSCALAR MESONS
QUARK MODEL
STRANGE MESONS
STRANGE PARTICLES