Measurement of the time-dependent CP asymmetry in B0→J/ψKS0 decays

• Published in: Physics letters. B Vol. 721; no. 1-3; pp. 24 - 31
• Main Authors: Adinolfi, M., Adrover, C., Alkhazov, G., Anderlini, L., Aslanides, E., Back, J.J., Bencivenni, G., Benson, S., Bocci, V., Bondar, A., Bowcock, T.J.V., Bozzi, C., Brown, H., Büchler-Germann, A., Carbone, A., Cardinale, R., Chen, P., Closier, J., Cogneras, E., Cunliffe, S., De Paula, L., Dordei, F., Dovbnya, A., Dziurda, A., Eisenhardt, S., Eklund, L., Fernandez Albor, V., Filippov, S., Frei, C., Garosi, P., Gershon, T., Ghez, Ph, Göbel, C., Gomes, A., Graciani Diaz, R., Gys, T., Hansmann-Menzemer, S., Harnew, S.T., He, J., Hicks, E., Iakovenko, V., Jaton, P., Jones, C.R., Jost, B., Kaballo, M., Ketel, T., Koopman, R.F., Kudryavtsev, V., Lacarrere, D., Lai, A., Li, Y., Lindner, R., Linn, C., Lopes, J.H., Maev, O., Mangiafave, N., Marconi, U., Martellotti, G., McCarthy, J., Minard, M.-N., Muheim, F., Muster, B., Nguyen-Mau, C., Niess, V., Nomerotski, A., Oggero, S., Owen, P., Perez Trigo, E., Pietrzyk, B., Puig Navarro, A., Rauschmayr, N., Redford, S., Romanovsky, V., Ruf, T., Sabatino, G., Sail, P., Santinelli, R., Schmelling, M., Sciascia, B., Sciubba, A., Seco, M., Serra, N., Shears, T., Shires, A., Skwarnicki, T., Sparkes, A., Stone, S., Swientek, S., Szumlak, T., Thomas, C., Thomas, E., Tournefier, E., Tran, M.T., Uwer, U., Vazquez Gomez, R., Velthuis, J.J., Waldi, R., Wu, S., Wyllie, K., Xie, Y.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 10.04.2013
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/j.physletb.2013.02.054

This Letter reports a measurement of the CP violation observables SJ/ψKS0 and CJ/ψKS0 in the decay channel B0→J/ψKS0 performed with 1.0 fb−1 of pp collisions at s=7 TeV collected by the LHCb experiment. The fit to the data yields SJ/ψKS0=0.73±0.07(stat)±0.04(syst) and CJ/ψKS0=0.03±0.09(stat)±0.01(syst). Both values are consistent with the current world averages and within expectations from the Standard Model.