The decay anti-B0s->J/Psi pi+ pi- can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state is performed using a 1.0 fb-1 sample of data produced in 7 TeV pp collisions at the LHC and collected by the LHCb experiment. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. The pi+pi- system is shown to be dominantly in an S-wave state, and the CP-odd fraction in this anti-Bs0 decay is shown to be greater than 0.977 at 95% confidence level. In addition, we report the first measurement of the J/Psi pi+ pi- branching fraction relative to J/Psi phi of (19.79+-0.47+-0.52)%.

Analysis of the resonant components in B̄s0→J/ψπ +π - / R., A., C., A.B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P., A.C., A., A., S., A., Y., A., J., A., R., A., O., A.G., F., A., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 86:5(2012), pp. 052006-1-052006-20. [10.1103/PhysRevD.86.052006]

Analysis of the resonant components in B̄s0→J/ψπ +π -

BIZZETI, Andrea;
2012

Abstract

The decay anti-B0s->J/Psi pi+ pi- can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state is performed using a 1.0 fb-1 sample of data produced in 7 TeV pp collisions at the LHC and collected by the LHCb experiment. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. The pi+pi- system is shown to be dominantly in an S-wave state, and the CP-odd fraction in this anti-Bs0 decay is shown to be greater than 0.977 at 95% confidence level. In addition, we report the first measurement of the J/Psi pi+ pi- branching fraction relative to J/Psi phi of (19.79+-0.47+-0.52)%.
2012
86
5
052006-1
052006-20
Analysis of the resonant components in B̄s0→J/ψπ +π - / R., A., C., A.B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P., A.C., A., A., S., A., Y., A., J., A., R., A., O., A.G., F., A., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 86:5(2012), pp. 052006-1-052006-20. [10.1103/PhysRevD.86.052006]
R., Aaij; C., Abellan Beteta; B., Adeva; M., Adinolfi; C., Adrover; A., Affolder; Z., Ajaltouni; J., Albrecht; F., Alessio; M., Alexander; S., Ali; G....espandi
File in questo prodotto:
File Dimensione Formato  
PhysRevD.86.052006.pdf

Open access

Tipologia: VOR - Versione pubblicata dall'editore
Licenza: [IR] creative-commons
Dimensione 1.63 MB
Formato Adobe PDF
1.63 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/812735
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 106
  • ???jsp.display-item.citation.isi??? 79
social impact