Abstract
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.
| Original language | English (US) |
|---|---|
| Article number | 112009 |
| Journal | Physical Review D |
| Volume | 92 |
| Issue number | 11 |
| DOIs | |
| State | Published - Dec 29 2015 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
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Model-independent confirmation of the Z (4430)- state. / (LHCb Collaboration).
In: Physical Review D, Vol. 92, No. 11, 112009, 29.12.2015.Research output: Contribution to journal › Article
}
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, Marina
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 - Blusk, Steven Roy
AU - Skwarnicki, Tomasz
AU - Stone, Sheldon
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 - http://www.scopus.com/inward/record.url?scp=84953246005&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84953246005&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.92.112009
DO - 10.1103/PhysRevD.92.112009
M3 - Article
AN - SCOPUS:84953246005
VL - 92
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 11
M1 - 112009
ER -