Published January 1, 2006
| Version v1
Report
Measurement of sigma(Lambda(b)0)/sigma(anti-B 0) x B(Lambda0(b) ---> Lambda+(c) pi-)/B(anti-B0 ---> D+ pi-) in p anti-p collisions at S**(1/2) = 1.96-TeV
Creators
- Abulencia, A.
- Acosta, D.
- Adelman, J.
- Affolder, Anthony A.
- Akimoto, T.
- Albrow, M.G.
- Ambrose, D.
- Amerio, S.
- Amidei, D.
- Anastassov, A.
- Anikeev, K.
- Annovi, A.
- Antos, J.
- Aoki, M.
- Apollinari, G.
- Arguin, J.-F.
- Arisawa, T.
- Artikov, A.
- Ashmanskas, W.
- Attal, A.
- Azfar, F.
- Taiwan, Inst. Phys.
- Argonne
- Barcelona, IFAE
- Baylor U.
- INFN, Bologna
- Bologna U.
- Brandeis U.
- UC, Davis
- UCLA
- UC, San Diego
- UC, Santa Barbara
- Cantabria Inst. of Phys.
- Carnegie Mellon U.
- Chicago U., EFI
- Dubna, JINR
- Duke U.
- Fermilab
- Florida U.
- Frascati
- Geneva U.
- Glasgow U.
- Fermi National Accelerator Lab., Batavia, IL (United States)
Description
The authors present the first observation of the baryon decay Λb0 → Λc+π- followed by Λc+ → pK- π+ in 106 pb-1 p(bar p) collisions at √s = 1.96 TeV in the CDF experiment. In order to reduce systematic error, the measured rate for Λb0 decay is normalized to the kinematically similar meson decay (bar B)0 → D+π- followed by D+ → π+K-π+. They report the ratio of production cross sections (σ) times the ratio of branching fractions (Β) for the momentum region integrated above pT > 6 GeV/c and pseudorapidity range |η| < 1.3: σ(p(bar p) → Λb0X)/σ(p(bar p) → (bar B)0X) x Β(Λc+π-)/Β((bar B)0 → D+π-) = 0.82 ± 0.08 (stat) ± 0.11 (syst) ± 0.22 (Β(Λc+ → pK-π+))
Availability note (English)
Available from http://lss.fnal.gov/cgi-bin/find_paper.pl?pub-05-574-E.pdf; PURL: https://www.osti.gov/servlets/purl/892455-cH11UA/Additional details
Identifiers
Publishing Information
- Imprint Pagination
- 7 p.
- Report number
- FERMILAB-PUB--05-574-E
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 38005142
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- BARYONS; BRANCHING RATIO; CROSS SECTIONS; FERMILAB COLLIDER DETECTOR; MESONS; PARTICLE DECAY
- Descriptors DEC
- BOSONS; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; MEASURING INSTRUMENTS; RADIATION DETECTORS
Optional Information
- Contract/Grant/Project number
- arXiv eprint number hep-ex/0601003; AC02-76CH03000
- Funding organization
- US Department of Energy (United States)