TY - JOUR
T1 - Model-independent confirmation of the Z (4430)- state
AU - (LHCb Collaboration)
AU - Aaij, R.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Affolder, A.
AU - Ajaltouni, Z.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Ali, S.
AU - Alkhazov, G.
AU - Alvarez Cartelle, P.
AU - Alves, A. A.
AU - Amato, S.
AU - Amerio, S.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Anderson, J.
AU - Andreassen, R.
AU - Andreotti, M.
AU - Andrews, J. E.
AU - Appleby, R. B.
AU - Aquines Gutierrez, O.
AU - Archilli, F.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Auriemma, G.
AU - Baalouch, M.
AU - Bachmann, S.
AU - Back, J. J.
AU - Badalov, A.
AU - Balagura, V.
AU - Baldini, W.
AU - Barlow, R. J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Batozskaya, V.
AU - Bauer, Th
AU - Bay, A.
AU - Beaucourt, L.
AU - Beddow, J.
AU - Bedeschi, F.
AU - Bediaga, I.
AU - Belogurov, S.
AU - Belous, K.
AU - Belyaev, I.
AU - Ben-Haim, E.
AU - Bencivenni, G.
N1 - Publisher Copyright:
© 2015 CERN.
PY - 2015/12/29
Y1 - 2015/12/29
N2 - The decay B0→ψ(2S)K+π- is analyzed using 3 fb-1 of pp collision data collected with the LHCb detector. A model-independent description of the ψ(2S)π mass spectrum is obtained, using as input the Kπ mass spectrum and angular distribution derived directly from data, without requiring a theoretical description of resonance shapes or their interference. The hypothesis that the ψ(2S)π mass spectrum can be described in terms of Kπ reflections alone is rejected with more than 8σ significance. This provides confirmation, in a model-independent way, of the need for an additional resonant component in the mass region of the Z(4430)- exotic state.
AB - The decay B0→ψ(2S)K+π- is analyzed using 3 fb-1 of pp collision data collected with the LHCb detector. A model-independent description of the ψ(2S)π mass spectrum is obtained, using as input the Kπ mass spectrum and angular distribution derived directly from data, without requiring a theoretical description of resonance shapes or their interference. The hypothesis that the ψ(2S)π mass spectrum can be described in terms of Kπ reflections alone is rejected with more than 8σ significance. This provides confirmation, in a model-independent way, of the need for an additional resonant component in the mass region of the Z(4430)- exotic state.
UR - https://www.scopus.com/pages/publications/84953246005
U2 - 10.1103/PhysRevD.92.112009
DO - 10.1103/PhysRevD.92.112009
M3 - Article
AN - SCOPUS:84953246005
SN - 1550-7998
VL - 92
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
M1 - 112009
ER -