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EnglishA search for charmonium and other new states is performed in a study of exclusive initial-state-radiation production of D (D) over bar 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) over bar mass spectrum shows clear evidence of the psi(3770) plus other structures near 3.9, 4.1, and 4.4 GeV/c(2). No evidence for Y(4260)-> D (D) over bar is observed, leading to an upper limit of B(Y(4260)-> D (D) over bar)/B(Y(4260)-> J/psi pi(+)pi(-))< 1.0 at 90% confidence level.
http://hdl.handle.net/11384/5538| Titolo: | Study of the exclusive initial-state-radiation production of the D(D)over-bar system RID C-5223-2009 RID C-5719-2008 RID D-1055-2009 |
| Autori interni: | LUSIANI, Alberto |
| Data di pubblicazione: | 2007 |
| Rivista: | PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY |
| Abstract: | A search for charmonium and other new states is performed in a study of exclusive initial-state-radiation production of D (D) over bar 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) over bar mass spectrum shows clear evidence of the psi(3770) plus other structures near 3.9, 4.1, and 4.4 GeV/c(2). No evidence for Y(4260)-> D (D) over bar is observed, leading to an upper limit of B(Y(4260)-> D (D) over bar)/B(Y(4260)-> J/psi pi(+)pi(-))< 1.0 at 90% confidence level. |
| Handle: | http://hdl.handle.net/11384/5538 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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