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$A possible simultaneous fit to the available \$e^+e^- \\rightarrow \\Lambda^+_c \\bar{\\Lambda}^-_c\$ cross section data nearby \$\\psi(4660)\$ by means of a strong correction to the Coulomb enhancement factor$

A possible simultaneous fit to the available \$e^+e^- \\rightarrow \\Lambda^+_c \\bar{\\Lambda}^-_c\$ cross section data nearby \$\\psi(4660)\$ by means of a strong correction to the Coulomb enhancement factor

by Destefanis, Marco , Scodeggio, Marco , Balossino, Ilaria , Patteri, Piero , Calcaterra, Alessandro , Gaido, Luciano , Lavezzi, Lia , Cibinetto, Gianluigi , De Mori, Francesca , Bertani, Monica , Greco, Michela , Pace, Elisabetta , Fava, Luciano , Bortone, Alberto , Farinelli, Riccardo , Lusso, Stefano , Rivetti, Angelo , Amoroso, Antonio , Bianchi, Fabrizio , Simonetta Marcello , Mezzadri, Giulio , Sosio, Stefano , Manuel Dioniso Da Rocha Rolo , Rinaldo Baldini Ferroli , Garzia, Isabella , Spataro, Stefano , Maggiora, Marco , Mangoni, Alessio , Cossio, Fabio , Bagnasco, Stefano , Pacetti, Simone , Bettoni, Diego , Felici, Giulietto

in Cross-sections / Datasets

2021

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in Cross-sections / Datasets

2021

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2021

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Paper

A possible simultaneous fit to the available \$e^+e^- \\rightarrow \\Lambda^+_c \\bar{\\Lambda}^-_c\$ cross section data nearby \$\\psi(4660)\$ by means of a strong correction to the Coulomb enhancement factor

Destefanis, Marco,

Scodeggio, Marco,

Balossino, Ilaria,

Patteri, Piero,

Calcaterra, Alessandro,

Gaido, Luciano,

Lavezzi, Lia,

Cibinetto, Gianluigi,

De Mori, Francesca,

Bertani, Monica,

Greco, Michela,

Pace, Elisabetta,

Fava, Luciano,

Bortone, Alberto,

Farinelli, Riccardo,

Lusso, Stefano,

Rivetti, Angelo,

Amoroso, Antonio,

Bianchi, Fabrizio,

Simonetta Marcello,

Mezzadri, Giulio,

Sosio, Stefano,

Manuel Dioniso Da Rocha Rolo,

Rinaldo Baldini Ferroli,

Garzia, Isabella,

Spataro, Stefano,

Maggiora, Marco,

Mangoni, Alessio,

Cossio, Fabio,

Bagnasco, Stefano,

Pacetti, Simone,

Bettoni, Diego,

Felici, Giulietto

2021

Overview

There are two available set of data on the \$e^+e^- \\rightarrow \\Lambda^+_c \\bar{\\Lambda}_c^-\$ cross section above threshold. The BELLE measurement, with ISR return, is compatible with the presence of a resonant state, called \$\\psi(4660)\$ (formerly known as \$Y(4660)\$), observed also in other final states. The BESIII dataset has shown a different trend, with a flat cross section. We propose a new solution to fit both datasets by means of a strong correction to the Coulomb enhancement factor. Mass and width of the resonant state is extracted.

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Publisher

Cornell University Library, arXiv.org

Subject

Cross-sections

/ Datasets