Details

Autor(en) / Beteiligte

• Grauges, E.
• Palano, A.
• Eigen, G.
• Stugu, B.
• Brown, D. N.
• Kerth, L. T.
• Lynch, G.
• Khan, A.
• Druzhinin, V. P.
• Kravchenko, E. A.
• Yushkov, A. N.
• Bondioli, M.
• Long, O.
• Richman, J. D.
• West, C. A.
• Lockman, W. S.
• Martinez, A. J.
• Seiden, A.
• Chao, D. S.
• Ongmongkolkul, P.
• Rakitin, A. Y.
• Ayad, R.
• Schwierz, R.
• Bernard, D.
• Verderi, M.
• Playfer, S.
• Bettoni, D.
• Bozzi, C.
• Luppi, E.
• Finocchiaro, G.
• Patteri, P.
• Piccolo, M.
• Contri, R.
• Monge, M. R.
• Passaggio, S.
• Bhuyan, B.
• Prasad, V.
• Morii, M.
• Uwer, U.
• Prell, S.
• Rubin, A. E.
• Arnaud, N.
• Davier, M.
• Derkach, D.
• Wright, D. M.
• Hutchcroft, D. E.
• Touramanis, C.
• Sigamani, M.
• Davis, C. L.
• Behn, E.
• Cenci, R.
• Cowan, R.
• Sonnek, P.
• Summers, D. J.
• Simard, M.
• Taras, P.
• De Nardo, G.
• Monorchio, D.
• Morandin, M.
• Akar, S.
• Ben-Haim, E.
• Briand, H.
• Hamon, O.
• Marchiori, G.
• Sitt, S.
• Carpinelli, M.
• Forti, F.
• Lusiani, A.
• Lopes Pegna, D.
• Olsen, J.
• Ferroni, F.
• Bünger, C.
• Voss, C.
• Hamel de Monchenault, G.
• Aston, D.
• Bard, D. J.
• Bartoldus, R.
• Convery, M. R.
• Field, R. C.
• Franco Sevilla, M.
• Gabareen, A. M.
• Kelsey, M. H.
• Kim, P.
• Leith, D. W. G. S.
• Luth, V.
• Muller, D. R.
• Neal, H.
• Snyder, A.
• Sullivan, M. K.
• Wagner, A. P.
• Wisniewski, W. J.
• Miyashita, T. S.
• Peimer, D. R.
• Soffer, A.
• Lou, X. C.
• Zambito, S.
• Banerjee, Sw
• Choi, H. H. F.
• Roney, J. M.
• Pan, Y.

Titel

Evidence for an Excess of B ¯ → D ( ) τ − ν ¯ τ Decays

Ist Teil von

• Physical review letters, 2012-09, Vol.109 (10), Article 101802

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2012

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• Based on the full BABAR data sample, we report improved measurements of the ratios R(D(*))=B(B̄→D(*)τ⁻ν¯τ)/B(B̄→D(*)ll¯ν¯l), where l is either e or μ. These ratios are sensitive to new physics contributions in the form of a charged Higgs boson. We measure R(D)=0.440±0.058±0.042 and R(D*)=0.332±0.024±0.018, which exceed the standard model expectations by 2.0σ and 2.7σ, respectively. Taken together, our results disagree with these expectations at the 3.4σ level. This excess cannot be explained by a charged Higgs boson in the type II two-Higgs-doublet model.