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

558211.pdf (479.05 KB)

Document type

Article

Version

Published version

Publication date

2007-12-28

All rights reserved

Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131455

Study of the exclusive initial-state-radiation production of the D¯¯¯D system

Journal Title

Authors

Director/Tutor

Journal ISSN

Volume Title

Related resource

https://doi.org/10.1103/PhysRevD.76.111105

Abstract

A search for charmonium and other new states is performed in a study of exclusive initial-state-radiation production of D ¯¯¯ D events from electron-positron annihilations at a center-of-mass energy of 10.58 GeV. The data sample corresponds to an integrated luminosity of 384     fb − 1 and was recorded by the BABAR experiment at the PEP-II storage ring. The D ¯¯¯ D mass spectrum shows clear evidence of the ψ ( 3770 ) plus other structures near 3.9, 4.1, and 4.4     GeV / c 2 . No evidence for Y ( 4260 ) → D ¯¯¯ D is observed, leading to an upper limit of B ( Y ( 4260 ) → D ¯¯¯ D ) / B ( Y ( 4260 ) → J / ψ π + π − ) < 1.0 at 90% confidence level.

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. Study of the exclusive initial-state-radiation production of the D¯¯¯D system. Physical Review D. 2007. Vol. 76, num. 11, pags. 111105. ISSN 1550-7998. [consulted: 8 of August of 2026]. Available at: https://hdl.handle.net/2445/131455

Export metadata

JSON - METS

Share record