Observation of the Resonant Character of the Z(4430)(-) State

R. Aaij; J.F.J. van den Brand; K. De Bruyn; C. Farinelli; V.A.M. Heijne; T.J. Ketel; R. Koopman; D.M. Lambert; R.W. Lambert; J. van Leerdam; Y.J. Li; M.H.M. Merk; S. Oggero; H.G. Raven; M. Schiller; V. Syropoulos; S. Tolk; S. Wu

doi:10.1103/PhysRevLett.112.222002

Observation of the Resonant Character of the Z(4430)(-) State

R. Aaij, J.F.J. van den Brand, K. De Bruyn, C. Farinelli, V.A.M. Heijne, T.J. Ketel, R. Koopman, D.M. Lambert, R.W. Lambert, J. van Leerdam, Y.J. Li, M.H.M. Merk, S. Oggero, H.G. Raven, M. Schiller, V. Syropoulos, S. Tolk, S. Wu

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Resonant structures in B0 -K+ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3fb-1 collected with the LHCb detector. The data cannot be described with K+Ï€- resonances alone, which is confirmed with a model-independent approach. A highly significant Z(4430)- Ïâ€ Ï€- component is required, thus confirming the existence of this state. The observed evolution of the Z(4430)- amplitude with the Ïâ€Ï€- mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin parity is determined unambiguously to be 1+. © 2014 CERN, for the LHCb Collaboration.

Original language	English
Article number	222002
Journal	Physical Review Letters
Volume	112
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.112.222002
Publication status	Published - 2014

Bibliographical note

PT: J; NR: 42; TC: 19; J9: PHYS REV LETT; PG: 9; GA: AI5PF; UT: WOS:000336920800007

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Aaij, R., van den Brand, J. F. J., De Bruyn, K., Farinelli, C., Heijne, V. A. M., Ketel, T. J., Koopman, R., Lambert, D. M., Lambert, R. W., van Leerdam, J., Li, Y. J., Merk, M. H. M., Oggero, S., Raven, H. G., Schiller, M., Syropoulos, V., Tolk, S., & Wu, S. (2014). Observation of the Resonant Character of the Z(4430)(-) State. Physical Review Letters, 112(22), Article 222002. https://doi.org/10.1103/PhysRevLett.112.222002

@article{1856ba30995f4266acedc5a890cd4fa5,

title = "Observation of the Resonant Character of the Z(4430)(-) State",

abstract = "Resonant structures in B0 -K+ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3fb-1 collected with the LHCb detector. The data cannot be described with K+{\"I}€- resonances alone, which is confirmed with a model-independent approach. A highly significant Z(4430)- {\"I}{\^a}€ {\"I}€- component is required, thus confirming the existence of this state. The observed evolution of the Z(4430)- amplitude with the {\"I}{\^a}€{\"I}€- mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin parity is determined unambiguously to be 1+. {\textcopyright} 2014 CERN, for the LHCb Collaboration.",

author = "R. Aaij and {van den Brand}, J.F.J. and {De Bruyn}, K. and C. Farinelli and V.A.M. Heijne and T.J. Ketel and R. Koopman and D.M. Lambert and R.W. Lambert and {van Leerdam}, J. and Y.J. Li and M.H.M. Merk and S. Oggero and H.G. Raven and M. Schiller and V. Syropoulos and S. Tolk and S. Wu",

note = "PT: J; NR: 42; TC: 19; J9: PHYS REV LETT; PG: 9; GA: AI5PF; UT: WOS:000336920800007",

year = "2014",

doi = "10.1103/PhysRevLett.112.222002",

language = "English",

volume = "112",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

Aaij, R, van den Brand, JFJ, De Bruyn, K, Farinelli, C, Heijne, VAM, Ketel, TJ, Koopman, R, Lambert, DM, Lambert, RW, van Leerdam, J, Li, YJ, Merk, MHM, Oggero, S, Raven, HG, Schiller, M, Syropoulos, V, Tolk, S & Wu, S 2014, 'Observation of the Resonant Character of the Z(4430)(-) State', Physical Review Letters, vol. 112, no. 22, 222002. https://doi.org/10.1103/PhysRevLett.112.222002

TY - JOUR

T1 - Observation of the Resonant Character of the Z(4430)(-) State

AU - Aaij, R.

AU - van den Brand, J.F.J.

AU - De Bruyn, K.

AU - Farinelli, C.

AU - Heijne, V.A.M.

AU - Ketel, T.J.

AU - Koopman, R.

AU - Lambert, D.M.

AU - Lambert, R.W.

AU - van Leerdam, J.

AU - Li, Y.J.

AU - Merk, M.H.M.

AU - Oggero, S.

AU - Raven, H.G.

AU - Schiller, M.

AU - Syropoulos, V.

AU - Tolk, S.

AU - Wu, S.

N1 - PT: J; NR: 42; TC: 19; J9: PHYS REV LETT; PG: 9; GA: AI5PF; UT: WOS:000336920800007

PY - 2014

Y1 - 2014

N2 - Resonant structures in B0 -K+ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3fb-1 collected with the LHCb detector. The data cannot be described with K+Ï€- resonances alone, which is confirmed with a model-independent approach. A highly significant Z(4430)- Ïâ€ Ï€- component is required, thus confirming the existence of this state. The observed evolution of the Z(4430)- amplitude with the Ïâ€Ï€- mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin parity is determined unambiguously to be 1+. © 2014 CERN, for the LHCb Collaboration.

AB - Resonant structures in B0 -K+ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3fb-1 collected with the LHCb detector. The data cannot be described with K+Ï€- resonances alone, which is confirmed with a model-independent approach. A highly significant Z(4430)- Ïâ€ Ï€- component is required, thus confirming the existence of this state. The observed evolution of the Z(4430)- amplitude with the Ïâ€Ï€- mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin parity is determined unambiguously to be 1+. © 2014 CERN, for the LHCb Collaboration.

U2 - 10.1103/PhysRevLett.112.222002

DO - 10.1103/PhysRevLett.112.222002

M3 - Article

SN - 0031-9007

VL - 112

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 222002

ER -

Observation of the Resonant Character of the Z(4430)(-) State

Abstract

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