Measurement of the {lambda}{sub b} Lifetime in the Exclusive Decay {lambda}{sub b}{yields}J/{psi}{lambda}
Journal Article
·
· Physical Review Letters
- Joint Institute for Nuclear Research, Dubna (Russian Federation)
- University of Oklahoma, Norman, Oklahoma 73019 (United States)
- Michigan State University, East Lansing, Michigan 48824 (United States)
We have measured the {lambda}{sub b} lifetime using the exclusive decay {lambda}{sub b}{yields}J/{psi}{lambda}, based on 1.2 fb{sup -1} of data collected with the D0 detector during 2002-2006. From 171 reconstructed {lambda}{sub b} decays, where the J/{psi} and {lambda} are identified via the decays J/{psi}{yields}{mu}{sup +}{mu}{sup -} and {lambda}{yields}p{pi}, we measured the {lambda}{sub b} lifetime to be {tau}({lambda}{sub b})=1.218{sub -0.115}{sup +0.130}(stat){+-}0.042(syst) ps. We also measured the B{sup 0} lifetime in the decay B{sup 0}{yields}J/{psi}({mu}{sup +}{mu}{sup -})K{sub S}{sup 0}({pi}{sup +}{pi}{sup -}) to be {tau}(B{sup 0})=1.501{sub -0.074}{sup +0.078}(stat){+-}0.050(syst) ps, yielding a lifetime ratio of {tau}({lambda}{sub b})/{tau}(B{sup 0})=0.811{sub -0.087}{sup +0.096}(stat){+-}0.034(syst = )
- OSTI ID:
- 21024229
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the Lambda(b) lifetime in the exclusive decay Lambda(b) ---> J / psi Lambda
Measurement of the Lambda(0)(b) lifetime in the exclusive decay Lambda(0)(b) -> J/psi Lambda(0) in p(p)over-bar collisions at root s=1.96 TeV
Measurement of the $\Lambda_b^0$ lifetime in the decay $\Lambda_b^0 \to J/\psi \Lambda^0$ with the D\O\ detector
Journal Article
·
Sun Apr 01 00:00:00 EDT 2007
· Phys.Rev.Lett.99:142001,2007
·
OSTI ID:918734
Measurement of the Lambda(0)(b) lifetime in the exclusive decay Lambda(0)(b) -> J/psi Lambda(0) in p(p)over-bar collisions at root s=1.96 TeV
Journal Article
·
Thu Jun 07 00:00:00 EDT 2012
· Physical Review. D, Particles, Fields, Gravitation and Cosmology
·
OSTI ID:1046436
Measurement of the $\Lambda_b^0$ lifetime in the decay $\Lambda_b^0 \to J/\psi \Lambda^0$ with the D\O\ detector
Journal Article
·
Fri Oct 01 00:00:00 EDT 2004
· Phys.Rev.Lett.
·
OSTI ID:1893467