Details

Autor(en) / Beteiligte

• Acharya, B. S.
• Augsten, K.
• Avila, C.
• Bellantoni, L.
• Bertram, I.
• Bloom, K.
• Boline, D.
• Boos, E. E.
• Borissov, G.
• Bunichev, V.
• Buszello, C. P.
• Casey, B. C. K.
• Chen, G.
• Cho, S. W.
• Choudhary, B.
• Claes, D.
• Cooper, W. E.
• Corcoran, M.
• Das, A.
• Déliot, F.
• Desai, S.
• Deterre, C.
• Dudko, L. V.
• Duperrin, A.
• Fauré, A.
• Fisher, W.
• Fortner, M.
• Garbincius, P. H.
• Garcia-Bellido, A.
• García-González, J. A.
• Ginther, G.
• Grünewald, M. W.
• Gutierrez, P.
• Han, L.
• Hauptman, J. M.
• Head, T.
• Hegab, H.
• Heinson, A. P.
• Hensel, C.
• Hoang, T.
• Hobbs, J. D.
• Hogan, J.
• Howley, I.
• Jesik, R.
• Jiang, P.
• Joshi, J.
• Juste, A.
• Katsanos, I.
• Khalatyan, N.
• Kiselevich, I.
• Lammers, S.
• Lee, W. M.
• Lei, X.
• Li, D.
• Li, H.
• Lincoln, D.
• Lipton, R.
• Liu, H.
• Liu, Y.
• Magaña-Villalba, R.
• Mansour, J.
• Melnitchouk, A.
• Mercadante, P. G.
• Meyer, A.
• Meyer, J.
• Miconi, F.
• Negret, J. P.
• Orduna, J.
• Pal, A.
• Parashar, N.
• Parua, N.
• Patwa, A.
• Peters, Y.
• Rominsky, M.
• Ross, A.
• Royon, C.
• Santos, A. S.
• Savage, G.
• Savitskyi, M.
• Scanlon, T.
• Schwanenberger, C.
• Shaw, S.
• Slattery, P.
• Söldner-Rembold, S.
• Suter, L.
• Uvarov, L.
• Uzunyan, S.
• Van Kooten, R.
• Varelas, N.
• Verkheev, A. Y.
• Verzocchi, M.
• Vilanova, D.
• Wahl, H. D.
• Warchol, J.
• Watts, G.
• Wyatt, T. R.
• Xie, Y.
• Yasuda, T.
• Ye, W.
• Zielinski, M.

Titel

Measurement of the B s 0 Lifetime in the Flavor-Specific Decay Channel B s 0 → D s − μ + ν X

Ist Teil von

• Physical review letters, 2015-02, Vol.114 (6), Article 062001

Ort / Verlag

American Physical Society

Erscheinungsjahr

2015

Quelle

PROLA

Beschreibungen/Notizen

• We present an updated measurement of the $B_s^0$ lifetime from the D0 collaboration using the semileptonic decays $B_s^0\rightarrow D_s^-\mu^+\nu X$, with $D_s^- \to \phi \pi^-$ and $\phi \to K^+K^-$ (and the charge conjugate process). This measurement uses the full Tevatron Run II sample of proton-antiproton collisions at $\sqrt{s} = 1.96$~TeV, comprising an integrated luminosity of 10.4~fb$^{-1}$. We find a flavor-specific lifetime $\tau_{\mathrm{fs}}(B_s^0)=1.479\pm0.010\thinspace{\rm(stat)}\pm0.021\thinspace{\rm(syst)}\thinspace\rm{ps}$. This technique is also used to determine the $B^0$ lifetime using the analogous $B^0\to D^-\mu^+\nu X$ decay with $D^-\to\phi\pi^-$, yielding $\tau(B^0)=1.534\pm0.019\thinspace{\rm(stat)}\pm0.021\thinspace{\rm(syst)}\thinspace\rm{ps}$. Both measurements are consistent with the current world averages, and the $B_s^0$ lifetime measurement is the most precise to date. Taking advantage of the cancellation of systematic uncertainties, we determine the lifetime ratio $\tau_{\mathrm{fs}}(B_s^0)/\tau(B^0) = 0.964\pm0.013\thinspace{\rm(stat)}\pm0.007\thinspace{\rm(syst)}$.