| Thème(s) : |
 |
Physique/Physique des Hautes Energies - Expérience
|
 |
| Titre : |
 |
Measurement of the Bs effective lifetime in the J/psi fo(980) final state |
 |
| Auteur : |
 |
R. Aaij, S. Barsuk1, O. Callot1, J. He1, B. Jean-Marie1, J. Lefrançois1, F. Machefert1, A. Martin Sanchez1, M. Nicol1, P. Robbe1, M.-H. Schune1, B. Viaud1, I. Videau1, E. Ben-Haim2, M. Benayoun2, P. David2, L. Del Buono2, A. Martens2, Z.J. Ajaltouni3, O. Deschamps3, E. Cogneras3, P. Henrard3, M. Hoballah3, M. Jahjah Hussein3, R. Lefèvre3, L. Li Gioi3, S. Monteil3, V. Niess3, P. Perret3, D.A. Roa Romero3, K. Sobczak3, C. Adrover4, E. Aslanides4, J. Cogan4, B. Khanji4, R. Legac4, O. Leroy4, G. Mancinelli4, E. Maurice4, M. Perrin-Terrin4, M. Sapunov4, J. Serrano4, A. Tsaregorodtsev4, I. De Bonis5, D. Decamp5, Ph. Ghez5, P. Hopchev5, J.-P. Lees5, I.V. Machikhiliyan5, M.-N. Minard5, B. Pietrzyk5, S. T'Jampens5, V. Tisserand5, E. Tournefier5 |
 |
| Laboratoire : |
 |
|
 |
| Résumé : |
 |
The effective lifetime of the Bs meson in the decay mode Bs->J/\psi fo(980) is measured using 1.0/fb of data collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector. The result is 1.700 +/- 0.040 +/- 0.026 ps where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy Bs mass eigenstate, \Gamma_H = (0.588 +/- 0.014 +/- 0.009)/ps. |
 |
| Collaboration/Projet : |
 |
LHCb |
 |
|
| Type de publication : |
 |
Articles dans des revues avec comité de lecture |
 |
Date de publication ou d'écriture : |
 |
2012 |
 |
| Nom du périodique : |
 |
| Physical Review Letters (Phys. Rev. Lett.) |
| Publisher |
American Physical Society |
| ISSN |
0031-9007 (eISSN : 1079-7114) |
|
 |
| Volume : |
 |
109 |
 |
| Page/Article : |
 |
152002 |
 |
|
| Commentaire : |
 |
14 pages, 5 figures - See paper for full list of authors |
 |