A search for the flavor-changing neutral-current decay Λc+→pμ+μ- is reported using a data set corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb Collaboration. No significant signal is observed outside of the dimuon mass regions around the φ and ω resonances, and an upper limit is placed on the branching fraction of B(Λc+→pμ+μ-)<7.7(9.6)×10-8 at 90%(95%) confidence level. A significant signal is observed in the ω dimuon mass region for the first time.
Search for the rare decay Λc+ →pμ+μ-
Brundu, D.;Dettori, F.;Loi, A.;Manca, G.;Oldeman, R.;Saitta, B.;
2018-01-01
Abstract
A search for the flavor-changing neutral-current decay Λc+→pμ+μ- is reported using a data set corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb Collaboration. No significant signal is observed outside of the dimuon mass regions around the φ and ω resonances, and an upper limit is placed on the branching fraction of B(Λc+→pμ+μ-)<7.7(9.6)×10-8 at 90%(95%) confidence level. A significant signal is observed in the ω dimuon mass region for the first time.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
PhysRevD.97.091101.pdf
accesso aperto
Tipologia:
versione editoriale (VoR)
Dimensione
414.37 kB
Formato
Adobe PDF
|
414.37 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.