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

Physics and Astronomy (Twin Cities)

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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

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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{d0a3d39918414e1cb0c7485c7f4cafb9,

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",

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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