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Measurement of the lambda(+)(c) lifetime |
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| Authors: | Mahmood A H Csorna S E Danko I McLean K W Márka S Xu Z Godang R Kinoshita K Lai I C Schrenk S Bonvicini G Cinabro D McGee S Perera L P Zhou G J Lipeles E Pappas S P Schmidtler M Shapiro A Sun W M Weinstein A J Würthwein F Jaffe D E Masek G Paar H P Potter E M Prell S Sharma V Asner D M Eppich A Hill T S Morrison R J Nelson H N Briere R A Chen G P Behrens B H Ford W T Gritsan A Roy J Smith J G Alexander J P Baker R Bebek C Berger B E Berkelman K Blanc F Boisvert V Cassel D G Dickson M Drell P S Ecklund K M Ehrlich R Foland A D Gaidarev P Galik R S Gibbons L Gittelman B Gray S W Hartill D L |
| Institution: | University of Texas, Pan American, Edinburg 78539, USA. |
| Abstract: | The Lambda+c lifetime is measured using 9.0 fb(-1) of e+e- annihilation data collected on or just below the Upsilon(4S) resonance with the CLEO II.V detector at CESR. Using an unbinned maximum likelihood fit, the Lambda+c lifetime is measured to be 179.6+/-6.9(stat)+/-4.4(syst) fs. The precision of this colliding beam measurement is comparable to other measurements, which are based on fixed-target experiments, with different systematic uncertainties. |
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