Model-independent confirmation of the Z (4430)- state

(LHCb Collaboration)

doi:10.1103/PhysRevD.92.112009

Model-independent confirmation of the Z (4430)- state

(LHCb Collaboration)

Department of Physics

Research output: Contribution to journal › Article

29 Scopus citations

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 - Particles, Fields, Gravitation and Cosmology
Volume	92
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.92.112009
State	Published - Dec 29 2015

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

Access to Document

10.1103/PhysRevD.92.112009

Fingerprint Dive into the research topics of 'Model-independent confirmation of the Z (4430)- state'. Together they form a unique fingerprint.

Cite this

(LHCb Collaboration) (2015). Model-independent confirmation of the Z (4430)- state. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(11), [112009]. https://doi.org/10.1103/PhysRevD.92.112009

@article{6b71f690b2c743fca7a782b980e1ffd2,

title = "Model-independent confirmation of the Z (4430)- state",

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.",

author = "{(LHCb Collaboration)} and R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and J. Anderson and R. Andreassen and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and V. Balagura and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and Th Bauer and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and S. Belogurov and K. Belous and Blusk, {Steven Roy} and Tomasz Skwarnicki and Sheldon Stone",

year = "2015",

month = dec,

day = "29",

doi = "10.1103/PhysRevD.92.112009",

language = "English (US)",

volume = "92",

journal = "Physical Review D",

issn = "0556-2821",

number = "11",

}

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 - 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

JF - Physical Review D

SN - 0556-2821

IS - 11

M1 - 112009

ER -