Skip to main content
SpringerLink
Log in

Exclusive beauty states and their lifetimes from the OPAL experiment

  • Published:
Il Nuovo Cimento A (1965-1970)

Summary

Recent experimental results regarding the production and lifetimes of exclusive b-hadron states from the OPAL experiment are presented. The results for the lifetimes of B 0d , B+ and B 0s in events with a semi-leptonic decay of the b-hadron and an associated reconstructed c-hadron are: τ(B 0d )=1.51 +0.30+0.12+0.28−0.14 ps and τ(B+)=1.51 +0.24−0.12+0.23−0.14 ps, τ(B 0s )=(1.13 +0.35−0.26 ±0.09) ps, where the errors are statistical and systematic, respectively, and are consistent within the errors with the OPAL measurement of the average b-hadron lifetime measured in inclusive semi-leptonic decays. The lifetime of the b-baryons is measured to be τ(b-baryon)=(1.05 +0.23−0.20 ±0.08) ps, determined using the correlation between the lepton from the semi-leptonic decay of the b-baryon and a Λ from the subsequent decay chain.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. M. B. Voloshin andM. A. Shifman:Sov. J. Nucl. Phys.,47, 511 (1988);N. Isgur andM. B. Wise:Phys. Lett. B,232, 113 (1989);237, 527 (1990).

    Google Scholar 

  2. J. H. Kühn et al.: Heavy Flavours at LEP, MPI-PAEPTh 49/89, August 1989, contribution byR. Rückl, p. 59 and summarized inZ. Phys. at LEP 1, edited byG. Altarelli, R. Kleiss andC. Verzegnassi, Vol.1 (CERN 89-09, 1989), p. 311–317;G. Altarelli andS. Petrarca:Phys. Lett. B,261, 303 (1991).

  3. OPAL Collaboration (K. Ahmet et al.):Nucl. Instrum. Methods A,305, 275 (1991).

    Article  ADS  Google Scholar 

  4. OPAL Collaboration (R. Akers et al.): CERN PPE/93-132, 29 July 1993, submitted toZ. Phys. C.

  5. OPAL Collaboration (R. Akers et al.):Phys. Lett. B,312, 501 (1993).

    Article  ADS  Google Scholar 

  6. OPAL Collaboration (P. Acton et al.):Phys. Lett. B,307, 247 (1993).

    Article  ADS  Google Scholar 

  7. ARGUS Collaboration (H. Albrecht et al.):Phys. Lett. B,275, 195 (1992);CLEO Collaboration (D. Bortoletto et al.):Phys. Rev. Lett.,63, 1667 (1989);ARGUS Collaboration (H. Albrecht et al.): DESY 92-146 (1992).

    Article  ADS  Google Scholar 

  8. CLEO Collaboration (R. Fulton et al.):Phys. Rev. D,43, 651 (1991).

    Article  ADS  Google Scholar 

  9. OPAL Collaboration (P. Acton et al.): CERN PPE/93-92, 4 June 1993, submitted toZ. Phys. C.

Download references

Author information

Authors and Affiliations

  1. PPE Division, CERN, CH-1211, Geneva, Switzerland

    R. W. L. Jones

Authors
  1. R. W. L. Jones
    View author publications

    You can also search for this author in PubMed Google Scholar

Consortia

OPAL Collaboration

Rights and permissions

Reprints and permissions

About this article

Cite this article

OPAL Collaboration., Jones, R.W.L. Exclusive beauty states and their lifetimes from the OPAL experiment. Nuov Cim A 107, 2007–2012 (1994). https://doi.org/10.1007/BF02823594

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02823594

PACS 14.20

PACS 14.40

PACS 01.30.Cc

Search

Navigation