Details

Autor(en) / Beteiligte

• Lees, J P
• Poireau, V
• Tisserand, V
• Schroeder, T
• Hearty, C
• Druzhinin, V P
• Serednyakov, S I
• Todyshev, K Yu
• Lockman, W S
• Chao, D S
• Cheng, C H
• Flood, K T
• Hitlin, D G
• Kim, J
• Miyashita, T S
• Porter, F C
• Sokoloff, M D
• Smith, J G
• Wagner, S R
• Bernard, D
• Bettoni, D
• Fioravanti, E
• Santoro, V
• Calcaterra, A
• Patteri, P
• Peruzzi, I M
• Piccolo, M
• Zallo, A
• Passaggio, S
• Patrignani, C
• Cochran, J
• Gritsan, A V
• Wormser, G
• Coleman, J P
• Gabathuler, E
• Bevan, A J
• Di Lodovico, F
• Sacco, R
• Davis, C L
• Cheaib, R
• Robertson, S H
• Dey, B
• Godang, R
• Sciacca, C
• Raven, G
• LoSecco, J M
• Margoni, M
• Posocco, M
• Rotondo, M
• Stroili, R
• Akar, S
• Bomben, M
• Chauveau, J
• Marchiori, G
• Biasini, M
• Forti, F
• Paoloni, E
• Rama, M
• Rizzo, G
• Walsh, J J
• Anulli, F
• Faccini, R
• Ferrarotto, F
• Pilloni, A
• Dittrich, S
• Grünberg, O
• Voß, C
• Waldi, R
• Adye, T
• Emery, S
• Cartaro, C
• Convery, M R
• Dorfan, J
• Dunwoodie, W
• Field, R C
• Fulsom, B G
• Muller, D R
• Neal, H
• Ratcliff, B N
• Roodman, A
• Sullivan, M K
• Va'vra, J
• Purohit, M V
• Wilson, J R
• Bellis, M
• Ernst, J A
• Gorodeisky, R
• Peimer, D R
• Spanier, S M
• Schwitters, R F
• Lou, X C
• Vitale, L
• Beaulieu, A
• Bernlochner, F U
• King, G J
• Kowalewski, R
• Lueck, T
• Tasneem, N
• Latham, T E
• Prepost, R

Titel

Search for B^{+}→K^{+}τ^{+}τ^{-} at the BaBar Experiment

Ist Teil von

• Physical review letters, 2017-01, Vol.118 (3), p.031802-031802, Article 031802

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2017

Quelle

American Physical Society

Beschreibungen/Notizen

• We search for the rare flavor-changing neutral current process B^{+}→K^{+}τ^{+}τ^{-} using data from the BABAR experiment. The data sample, collected at the center-of-mass energy of the ϒ(4S) resonance, corresponds to a total integrated luminosity of 424  fb^{-1} and to 471×10^{6}  BB[over ¯] pairs. We reconstruct one B meson, produced in the ϒ(4S)→B^{+}B^{-} decay, in one of many hadronic decay modes and search for activity compatible with a B^{+}→K^{+}τ^{+}τ^{-} decay in the rest of the event. Each τ lepton is required to decay leptonically into an electron or muon and neutrinos. Comparing the expected number of background events with the data sample after applying the selection criteria, we do not find evidence for a signal. The resulting upper limit, at the 90% confidence level, is B(B^{+}→K^{+}τ^{+}τ^{-})<2.25×10^{-3}.