The B+ → Ds+ Ds− K+ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb^−1. Its branching fraction relative to that of the B+ → D+ D− K+ decay is measured to be B(B+ → Ds+ Ds− K+)/B(B+ → D+ D− K+) = 0.525 ± 0.033 ± 0.027 ± 0.034, where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the Ds± → K∓ K± π± and D± → K∓ π± π± decays. This measurement fills an experimental gap in the knowledge of the family of Cabibbo-favored anti-b → anti-c c anti-s transitions and opens the path for unique studies of spectroscopy in future.

Aaij R., Abdelmotteleb A.S.W., Abellan Beteta C., Abudinen F., Ackernley T., Adeva B., et al. (2023). First Observation of the B+ → Ds+ Ds− K+ Decay. PHYSICAL REVIEW D, 108(3), 1-14 [10.1103/PhysRevD.108.034012].

First Observation of the B+ → Ds+ Ds− K+ Decay

Carbone A.;Ferrari F.;Galli D.;Manuzzi D.;Patrignani C.;Villa A.;Zucchelli S.;
2023

Abstract

The B+ → Ds+ Ds− K+ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb^−1. Its branching fraction relative to that of the B+ → D+ D− K+ decay is measured to be B(B+ → Ds+ Ds− K+)/B(B+ → D+ D− K+) = 0.525 ± 0.033 ± 0.027 ± 0.034, where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the Ds± → K∓ K± π± and D± → K∓ π± π± decays. This measurement fills an experimental gap in the knowledge of the family of Cabibbo-favored anti-b → anti-c c anti-s transitions and opens the path for unique studies of spectroscopy in future.
2023
Aaij R., Abdelmotteleb A.S.W., Abellan Beteta C., Abudinen F., Ackernley T., Adeva B., et al. (2023). First Observation of the B+ → Ds+ Ds− K+ Decay. PHYSICAL REVIEW D, 108(3), 1-14 [10.1103/PhysRevD.108.034012].
Aaij R.; Abdelmotteleb A.S.W.; Abellan Beteta C.; Abudinen F.; Ackernley T.; Adeva B.; Adinolfi M.; Afsharnia H.; Agapopoulou C.; Aidala C.A.; Aiola S...espandi
File in questo prodotto:
File Dimensione Formato  
2023-AR-46-First_Obs_of_the_Bp_to_Dsp_Dsm_Kp_Decay-PRD-min.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 605.26 kB
Formato Adobe PDF
605.26 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/953143
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? ND
social impact