Observation of the ᴧ0b → J/ψpπ− decay

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, LA Everse, L. Anderlini, J. Anderson, P.R. AndreassenM. Andreotti, J.E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, J. Van Den Brand, K. Carvalho Akiba, V. Coco, P. David, K. De Bruyn, C. Farinelli, M. Ferro-Luzzi, V. Heijne, T. Ketel, R. F. Koopman, A. Kozlinskiy, R. W. Lambert, J. Van Leerdam, M. Merk, S. Oggero, G. Raven, M. Schiller, N. Serra, H. Snoek, B. Storaci, V. Syropoulos, J. Van Tilburg, S. Tolk, P. Tsopelas, N. Tuning, The Lhcb Collaboration

Research output: Contribution to JournalArticleAcademicpeer-review


The first observation of the Cabibbo-suppressed decay V0b → J/ψpπ is reported using a data sample of proton-proton collisions at 7 and 8TeV, corresponding to an integrated luminosity of 3 fb−1. A prominent signal is observed and the branching fraction relative to the decay mode V0b → J/ψpK is determined to be B[Equations Found] A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be [Equations Found], which is compatible with CP symmetry at the 2.2σ level.

Original languageEnglish
Article number103
Number of pages19
JournalJournal of High Energy Physics
Issue number7
Publication statusPublished - 22 Jul 2014


  • B physics
  • Branching fraction
  • CP violation
  • Flavor physics
  • Hadron-Hadron Scattering


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