Heavy gauge boson and {Lambda}{sub b} baryon searches at CDF
We have searched for new gauge bosons (W{prime}{yields} lv, Z{prime} {yields} ll) and b baryons ({Lambda}{sub b} {yields} {psi}{Lambda}{sup 0}) in p{bar p} collisions at {radical}s = 1.8 TeV from the 1988--1989 run of the Collider Detector at Fermilab (CDF). We present 95% confidence level (C.L.) limits on the W{prime} and Z{prime} production cross section in leptonic decay modes. The nonobservation of these processes leads to limits of M{sub w{prime}} > 520 GeV/c{sub 2} and M{sub z{prime}} > 412 GeV/c{sub 2} (95% C.L.), assuming Standard Model coupling strengths. We see no evidence for the signal ({Lambda}{sub b} {yields} {psi}{Lambda}{sup 0}) in our {psi} sample ({psi} {yields} {mu}{mu}) around the {Lambda}{sub b} mass region of 5600 MeV. We set an upper limit on F({Lambda}{sub b})Br({Lambda}{sub b} {yields} {psi}{Lambda}{sup 0}) of 0.55 {times} 10{sup {minus}3} (90% C.L.), assuming that b baryons and mesons are produced in the fragmentation process in similar ways. The CDF Ai, search is also reported in the QCD session of this conference. This paper summarizes our result briefly; the details can be found in the other talk.
- Research Organization:
- Fermi National Accelerator Lab., Batavia, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 10176020
- Report Number(s):
- FNAL/C-92/160-E; CONF-9203154-7; ON: DE92019551; IN: CDF/PUB/ELECTROWEAK/PUBLIC/1766
- Resource Relation:
- Conference: 27. Moriond meeting: quantum chromodynamics (QCD) and high energy hadronic interactions,Les Arcs (France),22-28 Mar 1992; Other Information: PBD: Jun 1992
- Country of Publication:
- United States
- Language:
- English
Similar Records
CDF: Recent results and future prospects
CDF: Recent results and future prospects
Related Subjects
LAMBDA BARYONS
PARTICLE IDENTIFICATION
INTERMEDIATE VECTOR BOSONS
PROTON-ANTIPROTON INTERACTIONS
FERMILAB COLLIDER DETECTOR
CROSS SECTIONS
PARTICLE PRODUCTION
BRANCHING RATIO
B MESONS
MASS SPECTRA
662340
662410
662440
HADRON INTERACTIONS
PROPERTIES OF BARYONS AND BARYON RESONANCES
PROPERTIES OF OTHER PARTICLES INCLUDING HYPOTHETICAL PARTICLES