Amplitude analyses of the decays χ c1→ηπ +π - and χ c1→η ′π +π -

G. S. Adams; J. Napolitano; K. M. Ecklund; J. Insler; H. Muramatsu; C. S. Park; L. J. Pearson; E. H. Thorndike; S. Ricciardi; C. Thomas; M. Artuso; S. Blusk; R. Mountain; T. Skwarnicki; S. Stone; L. M. Zhang; G. Bonvicini; D. Cinabro; A. Lincoln; M. J. Smith; P. Zhou; J. Zhu; P. Naik; J. Rademacker; D. M. Asner; K. W. Edwards; K. Randrianarivony; G. Tatishvili; R. A. Briere; H. Vogel; P. U.E. Onyisi; J. L. Rosner; J. P. Alexander; D. G. Cassel; S. Das; R. Ehrlich; L. Gibbons; S. W. Gray; D. L. Hartill; B. K. Heltsley; D. L. Kreinick; V. E. Kuznetsov; J. R. Patterson; D. Peterson; D. Riley; A. Ryd; A. J. Sadoff; X. Shi; W. M. Sun; J. Yelton; P. Rubin; N. Lowrey; S. Mehrabyan; M. Selen; J. Wiss; J. Libby; M. Kornicer; R. E. Mitchell; M. R. Shepherd; A. Szczepaniak; D. Besson; T. K. Pedlar; D. Cronin-Hennessy; J. Hietala; S. Dobbs; Z. Metreveli; K. K. Seth; A. Tomaradze; T. Xiao; L. Martin; A. Powell; G. Wilkinson; J. Y. Ge; D. H. Miller; I. P.J. Shipsey; B. Xin

doi:10.1103/PhysRevD.84.112009

Amplitude analyses of the decays χ _c1→ηπ ⁺π ^- and χ _c1→η ^′π ⁺π ^-

G. S. Adams, J. Napolitano, K. M. Ecklund, J. Insler, H. Muramatsu, C. S. Park, L. J. Pearson, E. H. Thorndike, S. Ricciardi, C. Thomas, M. Artuso, S. Blusk, R. Mountain, T. Skwarnicki, S. Stone, L. M. Zhang, G. Bonvicini, D. Cinabro, A. Lincoln, M. J. SmithP. Zhou, J. Zhu, P. Naik, J. Rademacker, D. M. Asner, K. W. Edwards, K. Randrianarivony, G. Tatishvili, R. A. Briere, H. Vogel, P. U.E. Onyisi, J. L. Rosner, J. P. Alexander, D. G. Cassel, S. Das, R. Ehrlich, L. Gibbons, S. W. Gray, D. L. Hartill, B. K. Heltsley, D. L. Kreinick, V. E. Kuznetsov, J. R. Patterson, D. Peterson, D. Riley, A. Ryd, A. J. Sadoff, X. Shi, W. M. Sun, J. Yelton, P. Rubin, N. Lowrey, S. Mehrabyan, M. Selen, J. Wiss, J. Libby, M. Kornicer, R. E. Mitchell, M. R. Shepherd, A. Szczepaniak, D. Besson, T. K. Pedlar, D. Cronin-Hennessy, J. Hietala, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, T. Xiao, L. Martin, A. Powell, G. Wilkinson, J. Y. Ge, D. H. Miller, I. P.J. Shipsey, B. Xin

Department of Physics

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34 Scopus citations

Abstract

Using a data sample of 2.59×107 ψ(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains ψ(2S)→γχ _c1; χ _c1→ηπ ⁺π ^- and ψ(2S)→γχ _c1; χ _c1→η ^′π ⁺π ^-. We find evidence for an exotic P-wave η ^′π amplitude, which, if interpreted as a resonance, would have parameters consistent with the π ₁(1600) state reported in other production mechanisms. We also make the first observation of the decay a ₀(980) →η ^′π and measure the ratio of branching fractions B(a ₀(980)→η ^′π)/B(a ₀(980) →ηπ)=0.064±0.014±0.014. The ππ spectrum produced with a recoiling η is compared to that with η ^′ recoil.

Original language	English (US)
Article number	112009
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	84
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.84.112009
State	Published - Dec 29 2011

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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Adams, G. S., Napolitano, J., Ecklund, K. M., Insler, J., Muramatsu, H., Park, C. S., Pearson, L. J., Thorndike, E. H., Ricciardi, S., Thomas, C., Artuso, M., Blusk, S., Mountain, R., Skwarnicki, T., Stone, S., Zhang, L. M., Bonvicini, G., Cinabro, D., Lincoln, A., ... Xin, B. (2011). Amplitude analyses of the decays χ _c1→ηπ ⁺π ^- and χ _c1→η ^′π ⁺π ^- Physical Review D - Particles, Fields, Gravitation and Cosmology, 84(11), Article 112009. https://doi.org/10.1103/PhysRevD.84.112009

Adams, GS, Napolitano, J, Ecklund, KM, Insler, J, Muramatsu, H, Park, CS, Pearson, LJ, Thorndike, EH, Ricciardi, S, Thomas, C, Artuso, M , Blusk, S, Mountain, R, Skwarnicki, T, Stone, S, Zhang, LM, Bonvicini, G, Cinabro, D, Lincoln, A, Smith, MJ, Zhou, P, Zhu, J, Naik, P, Rademacker, J, Asner, DM, Edwards, KW, Randrianarivony, K, Tatishvili, G, Briere, RA, Vogel, H, Onyisi, PUE, Rosner, JL, Alexander, JP, Cassel, DG, Das, S, Ehrlich, R, Gibbons, L, Gray, SW, Hartill, DL, Heltsley, BK, Kreinick, DL, Kuznetsov, VE, Patterson, JR, Peterson, D, Riley, D, Ryd, A, Sadoff, AJ, Shi, X, Sun, WM, Yelton, J, Rubin, P, Lowrey, N, Mehrabyan, S, Selen, M, Wiss, J, Libby, J, Kornicer, M, Mitchell, RE, Shepherd, MR, Szczepaniak, A, Besson, D, Pedlar, TK, Cronin-Hennessy, D, Hietala, J, Dobbs, S, Metreveli, Z, Seth, KK, Tomaradze, A, Xiao, T, Martin, L, Powell, A, Wilkinson, G, Ge, JY, Miller, DH, Shipsey, IPJ & Xin, B 2011, 'Amplitude analyses of the decays χ _c1→ηπ ⁺π ^- and χ _c1→η ^′π ⁺π ^- ', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 84, no. 11, 112009. https://doi.org/10.1103/PhysRevD.84.112009

@article{2f584449915b4c829118fcf9112b1f04,

title = "Amplitude analyses of the decays χ c1→ηπ +π - and χ c1→η ′π +π - ",

abstract = "Using a data sample of 2.59×107 ψ(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains ψ(2S)→γχ c1; χ c1→ηπ +π - and ψ(2S)→γχ c1; χ c1→η ′π +π -. We find evidence for an exotic P-wave η ′π amplitude, which, if interpreted as a resonance, would have parameters consistent with the π 1(1600) state reported in other production mechanisms. We also make the first observation of the decay a 0(980) →η ′π and measure the ratio of branching fractions B(a 0(980)→η ′π)/B(a 0(980) →ηπ)=0.064±0.014±0.014. The ππ spectrum produced with a recoiling η is compared to that with η ′ recoil.",

author = "Adams, {G. S.} and J. Napolitano and Ecklund, {K. M.} and J. Insler and H. Muramatsu and Park, {C. S.} and Pearson, {L. J.} and Thorndike, {E. H.} and S. Ricciardi and C. Thomas and M. Artuso and S. Blusk and R. Mountain and T. Skwarnicki and S. Stone and Zhang, {L. M.} and G. Bonvicini and D. Cinabro and A. Lincoln and Smith, {M. J.} and P. Zhou and J. Zhu and P. Naik and J. Rademacker and Asner, {D. M.} and Edwards, {K. W.} and K. Randrianarivony and G. Tatishvili and Briere, {R. A.} and H. Vogel and Onyisi, {P. U.E.} and Rosner, {J. L.} and Alexander, {J. P.} and Cassel, {D. G.} and S. Das and R. Ehrlich and L. Gibbons and Gray, {S. W.} and Hartill, {D. L.} and Heltsley, {B. K.} and Kreinick, {D. L.} and Kuznetsov, {V. E.} and Patterson, {J. R.} and D. Peterson and D. Riley and A. Ryd and Sadoff, {A. J.} and X. Shi and Sun, {W. M.} and J. Yelton and P. Rubin and N. Lowrey and S. Mehrabyan and M. Selen and J. Wiss and J. Libby and M. Kornicer and Mitchell, {R. E.} and Shepherd, {M. R.} and A. Szczepaniak and D. Besson and Pedlar, {T. K.} and D. Cronin-Hennessy and J. Hietala and S. Dobbs and Z. Metreveli and Seth, {K. K.} and A. Tomaradze and T. Xiao and L. Martin and A. Powell and G. Wilkinson and Ge, {J. Y.} and Miller, {D. H.} and Shipsey, {I. P.J.} and B. Xin",

year = "2011",

month = dec,

day = "29",

doi = "10.1103/PhysRevD.84.112009",

language = "English (US)",

volume = "84",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "11",

}

TY - JOUR

T1 - Amplitude analyses of the decays χ c1→ηπ +π - and χ c1→η ′π +π -

AU - Adams, G. S.

AU - Napolitano, J.

AU - Ecklund, K. M.

AU - Insler, J.

AU - Muramatsu, H.

AU - Park, C. S.

AU - Pearson, L. J.

AU - Thorndike, E. H.

AU - Ricciardi, S.

AU - Thomas, C.

AU - Artuso, M.

AU - Blusk, S.

AU - Mountain, R.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Zhang, L. M.

AU - Bonvicini, G.

AU - Cinabro, D.

AU - Lincoln, A.

AU - Smith, M. J.

AU - Zhou, P.

AU - Zhu, J.

AU - Naik, P.

AU - Rademacker, J.

AU - Asner, D. M.

AU - Edwards, K. W.

AU - Randrianarivony, K.

AU - Tatishvili, G.

AU - Briere, R. A.

AU - Vogel, H.

AU - Onyisi, P. U.E.

AU - Rosner, J. L.

AU - Alexander, J. P.

AU - Cassel, D. G.

AU - Das, S.

AU - Ehrlich, R.

AU - Gibbons, L.

AU - Gray, S. W.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Kreinick, D. L.

AU - Kuznetsov, V. E.

AU - Patterson, J. R.

AU - Peterson, D.

AU - Riley, D.

AU - Ryd, A.

AU - Sadoff, A. J.

AU - Shi, X.

AU - Sun, W. M.

AU - Yelton, J.

AU - Rubin, P.

AU - Lowrey, N.

AU - Mehrabyan, S.

AU - Selen, M.

AU - Wiss, J.

AU - Libby, J.

AU - Kornicer, M.

AU - Mitchell, R. E.

AU - Shepherd, M. R.

AU - Szczepaniak, A.

AU - Besson, D.

AU - Pedlar, T. K.

AU - Cronin-Hennessy, D.

AU - Hietala, J.

AU - Dobbs, S.

AU - Metreveli, Z.

AU - Seth, K. K.

AU - Tomaradze, A.

AU - Xiao, T.

AU - Martin, L.

AU - Powell, A.

AU - Wilkinson, G.

AU - Ge, J. Y.

AU - Miller, D. H.

AU - Shipsey, I. P.J.

AU - Xin, B.

PY - 2011/12/29

Y1 - 2011/12/29

N2 - Using a data sample of 2.59×107 ψ(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains ψ(2S)→γχ c1; χ c1→ηπ +π - and ψ(2S)→γχ c1; χ c1→η ′π +π -. We find evidence for an exotic P-wave η ′π amplitude, which, if interpreted as a resonance, would have parameters consistent with the π 1(1600) state reported in other production mechanisms. We also make the first observation of the decay a 0(980) →η ′π and measure the ratio of branching fractions B(a 0(980)→η ′π)/B(a 0(980) →ηπ)=0.064±0.014±0.014. The ππ spectrum produced with a recoiling η is compared to that with η ′ recoil.

AB - Using a data sample of 2.59×107 ψ(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains ψ(2S)→γχ c1; χ c1→ηπ +π - and ψ(2S)→γχ c1; χ c1→η ′π +π -. We find evidence for an exotic P-wave η ′π amplitude, which, if interpreted as a resonance, would have parameters consistent with the π 1(1600) state reported in other production mechanisms. We also make the first observation of the decay a 0(980) →η ′π and measure the ratio of branching fractions B(a 0(980)→η ′π)/B(a 0(980) →ηπ)=0.064±0.014±0.014. The ππ spectrum produced with a recoiling η is compared to that with η ′ recoil.

UR - http://www.scopus.com/inward/record.url?scp=84855289567&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855289567&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.84.112009

DO - 10.1103/PhysRevD.84.112009

M3 - Article

AN - SCOPUS:84855289567

SN - 1550-7998

VL - 84

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 11

M1 - 112009

ER -

Amplitude analyses of the decays χ _c1→ηπ ⁺π ^- and χ _c1→η ^′π ⁺π ^-

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