Amb motiu del tancament d'estiu, la validació de documents es reprendrà a partir del 28 d'agost de 2026. Disculpeu les molèsties.
Con motivo del cierre de verano, la validación de documentos se reanudará a partir del 28 de agosto de 2026. Disculpad las molestias
Due to the summer closure, document validation will resume starting August 28, 2026. We apologize for any inconvenience.

Files

577763.pdf (304.33 KB)

Document type

Article

Version

Published version

Publication date

2009-03-19

All rights reserved

Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131668

Evidence for B+→¯¯¯¯K*0K*+

Journal Title

Authors

Director/Tutor

Journal ISSN

Volume Title

Related resource

https://doi.org/10.1103/PhysRevD.79.051102

Abstract

We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B + → ¯¯¯¯ K * 0 K * + with a sample of ( 467 ± 5 ) × 10 6 B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II asymmetric-energy e + e − collider at the SLAC National Accelerator Laboratory. We obtain the branching fraction B ( B + → ¯¯¯¯ K * 0 K * + ) = ( 1.2 ± 0.5 ± 0.1 ) × 10 − 6 with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization f L = 0.75 + 0.16 − 0.26 ± 0.03 . The first error quoted is statistical and the second is systematic.

Subject

Física de partícules, Experiments

Subject (English)

Particle physics, Experiments

Citation

Collections

Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

GARRA TICÓ, Jordi, GRAUGÉS POUS, Eugeni and BABAR Collaboration. Evidence for B+→¯¯¯¯K*0K*+. Physical Review D. 2009. Vol. 79, num. 5, pags. 051102. ISSN 1550-7998. [consulted: 15 of August of 2026]. Available at: https://hdl.handle.net/2445/131668

Export metadata

JSON - METS

Share record