A search is performed for rare and forbidden charm decays of the form D(s)+→h±ℓ+ℓ(′)∓, where h± is a pion or kaon and ℓ(′)± is an electron or muon. The measurements are performed using proton-proton collision data, corresponding to an integrated luminosity of 1.6 fb−1, collected by the LHCb experiment in 2016. No evidence is observed for the 25 decay modes that are investigated and 90 % confidence level limits on the branching fractions are set between 1.4 × 10−8 and 6.4 × 10−6. In most cases, these results represent an improvement on existing limits by one to two orders of magnitude. [Figure not available: see fulltext.]
Searches for 25 rare and forbidden decays of D + and Ds+ mesons
Neri N.;Petrolini A.;Spadaro Norella E.;
2021-01-01
Abstract
A search is performed for rare and forbidden charm decays of the form D(s)+→h±ℓ+ℓ(′)∓, where h± is a pion or kaon and ℓ(′)± is an electron or muon. The measurements are performed using proton-proton collision data, corresponding to an integrated luminosity of 1.6 fb−1, collected by the LHCb experiment in 2016. No evidence is observed for the 25 decay modes that are investigated and 90 % confidence level limits on the branching fractions are set between 1.4 × 10−8 and 6.4 × 10−6. In most cases, these results represent an improvement on existing limits by one to two orders of magnitude. [Figure not available: see fulltext.]| File | Dimensione | Formato | |
|---|---|---|---|
| 
									
										
										
										
										
											
												
												
												    
												
											
										
									
									
										
										
											Aaij2021_Article_SearchesFor25RareAndForbiddenD.pdf
										
																				
									
										
											 accesso aperto 
											Descrizione: Articolo
										 
									
									
									
										
											Tipologia:
											Documento in versione editoriale
										 
									
									
									
									
									
										Dimensione
										3.97 MB
									 
									
										Formato
										Adobe PDF
									 
										
										
								 | 
								3.97 MB | Adobe PDF | Visualizza/Apri | 
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.



