We report a 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 using an integrated luminosity of 1.0 fb(-1) of data collected by the CDF II detector at the Fermilab Tevatron. Using fully reconstructed decays, we measure tau(Lambda(0)(b))=1.593(-0.078)(+0.083)(stat)+/- 0.033(syst) ps. This is the single most precise measurement of tau(Lambda(0)(b)) and is 3.2 sigma higher than the current world average.

Measurement of the Lambda(0)(b) lifetime in Lambda(0)(b)-> J/psi Lambda(0) in p(p)over-bar collisions at root s=1.96 TeV / Abulencia, A., Adelman, J., Affolder, T., 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., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 98:12(2007), pp. 122001-1-122001-7. [10.1103/physrevlett.98.122001]

Measurement of the Lambda(0)(b) lifetime in Lambda(0)(b)-> J/psi Lambda(0) in p(p)over-bar collisions at root s=1.96 TeV

DE CECCO, Sandro;DIONISI, Carlo;GIAGU, Stefano;MARGAROLI, Fabrizio;IORI, Maurizio;LOVERRE, Pier Ferruccio;MESSINA, Andrea;SORRENTINO, Lucia;
2007

Abstract

We report a 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 using an integrated luminosity of 1.0 fb(-1) of data collected by the CDF II detector at the Fermilab Tevatron. Using fully reconstructed decays, we measure tau(Lambda(0)(b))=1.593(-0.078)(+0.083)(stat)+/- 0.033(syst) ps. This is the single most precise measurement of tau(Lambda(0)(b)) and is 3.2 sigma higher than the current world average.
2007
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the Lambda(0)(b) lifetime in Lambda(0)(b)-> J/psi Lambda(0) in p(p)over-bar collisions at root s=1.96 TeV / Abulencia, A., Adelman, J., Affolder, T., 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., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 98:12(2007), pp. 122001-1-122001-7. [10.1103/physrevlett.98.122001]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/357556
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