Measurement of the Average B-hadron Lifetime at CDF with Run 2 Data
Author : Stefan Bernard Gromoll
Publisher :
Page : 120 pages
File Size : 15,96 MB
Release : 2002
Category :
ISBN :
Author : Stefan Bernard Gromoll
Publisher :
Page : 120 pages
File Size : 15,96 MB
Release : 2002
Category :
ISBN :
Author :
Publisher :
Page : 7 pages
File Size : 21,93 MB
Release : 1993
Category :
ISBN :
The average b-hadron lifetime has been measured using a high statistics sample of B → J/?X decays recorded with the Collider Detector at Fermilab. The decay vertices of J/? →??− candidates have been reconstructed using information from a silicon vertex-detector. The measured B lifetime, which is the average over all b-hadrons produced in p{bar p} collisions at √s = 1.8 TeV, weighted by their branching ratios into J/? is:?B = 1.46 ± 0.06(stat.) ± 0.06(sys.)ps (preliminary); In addition we used the fully reconstructed final states B{sup ±} → J/?K{sup ±} and B° → J/?K°* to measure the exclusive lifetime of charged and neutral B-mesons. We measure:?{sub B}{sup ±} = 1.59 ± 0.27(stat.) ± 0.17(sys.) ps (preliminary);?{sub B}° = 1. 34 ± 0.31 (stat.) {plus_minus} 0.17 (sys.) ps (preliminary); From this we obtain the following result for the lifetime ratio:?{sub B}{sup {plus_minus}}/? {sub B}° = 1.19 {plus_minus} 0.35(stat.) {plus_minus} 0.12(sys.) (preliminary); This represents the first measurements of the b-lifetime at a hadron collider.
Author : Chong-sa Lim
Publisher : World Scientific
Page : 1550 pages
File Size : 25,59 MB
Release : 2001-04-30
Category : Science
ISBN : 9813201177
This book presents topics of major interest to the high energy physics community, as well as recent research results.
Author :
Publisher :
Page : pages
File Size : 39,53 MB
Release : 2005
Category :
ISBN :
Measurements of the average b-hadron lifetime using inclusive B [yields] J/[psi]X events, the individual B[sub u] and B[sub d] lifetimes and their ratio using exclusive B [yields] [psi]K events, and the B[sub s] lifetime using semileptonic B[sub s] lifetime using semileptonic B[sub s] [yields] l[nu]D[sub 3]X events are presented. The results were obtained from a 21.3 pb[sup [minus]1] sample of [radical]s = 1.8 TeV [bar p]p collisions collected in 1992--93 at the Fermilab Tevatron collider and required the precise position measurements of the recently installed CDF silicon vertex detector.
Author :
Publisher :
Page : 538 pages
File Size : 19,8 MB
Release : 1995
Category : Aeronautics
ISBN :
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author : K. Kondo
Publisher :
Page : 494 pages
File Size : 26,13 MB
Release : 1994
Category : Science
ISBN :
Author : Daniel Lellouch
Publisher : Springer Science & Business Media
Page : 1293 pages
File Size : 29,95 MB
Release : 2012-12-06
Category : Science
ISBN : 3642599826
The 1997 International Europhysics Conference on High Energy Physics was held at the campus of the Hebrew University of Jerusalem and at the Jerusalem Renaissance Hotel, from August 19th to August 25th, 1997. This was the first time that the European Physical Society had its High Energy Physics Conference outside the boundary of Europe. A total of 550 physicists participated in the conference with a total of 250 presentations in the parallel sessions and 26 presentations in the plenary sessions. The Board of the of the High Energy and Particle Physics division (HEPP) of the EPS acted as the Scientific Organizing Committee. The Board acknowl edges the help of the International Advisory Committee as well as that of the Local Organizing Committee. The conference was co-organized by the Hebrew University of Jerusalem and by the Weizmann Institute of Science, with important help by physi cists from the Israeli Institute of Technology (Technion) and the Tel Aviv University.
Author : Harry W. K. Cheung
Publisher : World Scientific
Page : 575 pages
File Size : 50,7 MB
Release : 2004
Category : Science
ISBN : 9812387161
This volume contains contributions to the XXI International Symposium on Lepton and Photon Interactions at High Energies, held at the Fermi National Accelerator Laboratory. It gives up-to-date reviews of all aspects of particle physics, written by leading practitioners in the field. The review nature of all the articles makes this volume more accessible to students and researchers in other fields of physics. In addition to new experimental data and advances in theory, the future directions and prospects for the field are covered.The proceedings have been selected for coverage in: ? Index to Scientific & Technical Proceedings? (ISTP? / ISI Proceedings)? Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)? CC Proceedings ? Engineering & Physical Sciences
Author : Zhi Peng Zheng
Publisher : World Scientific
Page : 854 pages
File Size : 21,59 MB
Release : 1996-07-26
Category :
ISBN : 9814549134
The is the most important conference on high energy physics in 1995. The speakers and the list of topics discussed are as follows:
Author : D. I. Britton
Publisher : Atlantica Séguier Frontières
Page : 732 pages
File Size : 32,50 MB
Release : 1994
Category : Heavy particles (Nuclear physics)
ISBN : 9782863321553