Measurement of resonant and CP components in (B)over-bar(s)(0) -> J/psi pi(+)pi(-) decays

  • R. Aaij*
  • , B. Adeva
  • , M. Adinolfi
  • , A. Affolder
  • , Z. Ajaltouni
  • , J. Albrecht
  • , F. Alessio
  • , M. Alexander
  • , S. Ali
  • , G. Alkhazov
  • , P. Alvarez Cartelle
  • , A. A. Alves
  • , S. Amato
  • , S. Amerio
  • , Y. Amhis
  • , L. Anderlini
  • , J. Anderson
  • , R. Andreassen
  • , M. Andreotti
  • , J. E. Andrews
  • R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, V. Batozskaya, T. Bauer, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, G. Onderwater, A. Pellegrino, LHCb Collaboration
*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Structure of the decay _ B0s. J=.p_p- is studied using data corresponding to 3 fb- 1 of integrated luminosity from pp collisions produced by the LHC and collected by the LHCb detector. Five interfering p_p- states are required to describe the decay: F-0(980), F-0(1500), F-0(1790), F-2 (1270) and F-2(1525) An alternative model including these states and a nonresonant J=.p_p- component also provides a good description of the data. Based on the different transversity components measured for the spin- 2 intermediate states, the final state is found to be compatible with being entirely CP odd. The CP- even part is found to be <2.3% at a 95% confidence level. The f 0d500_ state is not observed, allowing a limit to be set on the absolute value of the mixing angle with the f 0d980_ of <7.7 at a 90% confidence level, consistent with a tetraquark interpretation of the f(0)(980) substructure.

Original languageEnglish
Article number092006
Number of pages21
JournalPhysical Review D
Volume89
Issue number9
DOIs
Publication statusPublished - 14-May-2014

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