Study of ψ(2S) decays to γpp̄, π0pp̄, and ηpp̄, and search for pp̄ threshold enhancements

J. P. Alexander; D. G. Cassel; S. Das; R. Ehrlich; L. Fields; 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; C. M. Tarbert; D. Besson; T. K. Pedlar; J. Xavier; D. Cronin-Hennessy; J. Hietala; P. Zweber; S. Dobbs; Z. Metreveli; K. K. Seth; A. Tomaradze; T. Xiao; S. Brisbane; L. Martin; A. Powell; P. Spradlin; G. Wilkinson; H. Mendez; J. Y. Ge; D. H. Miller; I. P.J. Shipsey; B. Xin; G. S. Adams; D. Hu; B. Moziak; J. Napolitano; K. M. Ecklund; J. Insler; H. Muramatsu; C. S. Park; L. J. Pearson; E. H. Thorndike; F. Yang; S. Ricciardi; C. Thomas; M. Artuso; S. Blusk; R. Mountain; T. Skwarnicki; S. Stone; J. C. Wang; 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

doi:10.1103/PhysRevD.82.092002

Study of ψ(2S) decays to γpp̄, π0pp̄, and ηpp̄, and search for pp̄ threshold enhancements

J. P. Alexander, D. G. Cassel, S. Das, R. Ehrlich, L. Fields, 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. RubinN. Lowrey, S. Mehrabyan, M. Selen, J. Wiss, J. Libby, M. Kornicer, R. E. Mitchell, M. R. Shepherd, C. M. Tarbert, D. Besson, T. K. Pedlar, J. Xavier, D. Cronin-Hennessy, J. Hietala, P. Zweber, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, T. Xiao, S. Brisbane, L. Martin, A. Powell, P. Spradlin, G. Wilkinson, H. Mendez, J. Y. Ge, D. H. Miller, I. P.J. Shipsey, B. Xin, G. S. Adams, D. Hu, B. Moziak, J. Napolitano, K. M. Ecklund, J. Insler, H. Muramatsu, C. S. Park, L. J. Pearson, E. H. Thorndike, F. Yang, S. Ricciardi, C. Thomas, M. Artuso, S. Blusk, R. Mountain, T. Skwarnicki, S. Stone, J. C. Wang, 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

Department of Physics

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Abstract

The decays of ψ(2S) into γpp̄, π0pp̄, and ηpp̄ have been studied with the CLEO-c detector using a sample of 24.5×106 ψ(2S) events obtained from e⊃+e⊃- annihilations at √s=3686MeV. The data show evidence for the excitation of several N⊃* resonances in pπ0 and pη channels in π0pp̄ and ηpp̄ decays, and f₂ states in γpp̄ decay. Branching fractions for decays of ψ(2S) to γpp̄, π0pp̄, and ηpp̄ have been determined. No evidence for pp̄ threshold enhancements was found in the reactions ψ(2S)→Xpp̄, where X=γ, π0, η. We do, however, find confirming evidence for a pp̄ threshold enhancement in J/ψ→γpp̄ as previously reported by BES.

Original language	English (US)
Article number	092002
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	82
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.82.092002
State	Published - Nov 5 2010

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.82.092002

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Alexander, J. P., Cassel, D. G., Das, S., Ehrlich, R., Fields, L., Gibbons, L., Gray, S. W., Hartill, D. L., Heltsley, B. K., Kreinick, D. L., Kuznetsov, V. E., Patterson, J. R., Peterson, D., Riley, D., Ryd, A., Sadoff, A. J., Shi, X., Sun, W. M., Yelton, J., ... Rosner, J. L. (2010). Study of ψ(2S) decays to γpp̄, π0pp̄, and ηpp̄, and search for pp̄ threshold enhancements. Physical Review D - Particles, Fields, Gravitation and Cosmology, 82(9), Article 092002. https://doi.org/10.1103/PhysRevD.82.092002

Alexander, JP, Cassel, DG, Das, S, Ehrlich, R, Fields, L, 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, Tarbert, CM, Besson, D, Pedlar, TK, Xavier, J, Cronin-Hennessy, D, Hietala, J, Zweber, P, Dobbs, S, Metreveli, Z, Seth, KK, Tomaradze, A, Xiao, T, Brisbane, S, Martin, L, Powell, A, Spradlin, P, Wilkinson, G, Mendez, H, Ge, JY, Miller, DH, Shipsey, IPJ, Xin, B, Adams, GS, Hu, D, Moziak, B, Napolitano, J, Ecklund, KM, Insler, J, Muramatsu, H, Park, CS, Pearson, LJ, Thorndike, EH, Yang, F, Ricciardi, S, Thomas, C, Artuso, M , Blusk, S, Mountain, R, Skwarnicki, T, Stone, S, Wang, JC, 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 2010, 'Study of ψ(2S) decays to γpp̄, π0pp̄, and ηpp̄, and search for pp̄ threshold enhancements', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 82, no. 9, 092002. https://doi.org/10.1103/PhysRevD.82.092002

@article{01ad931563b84a68a4eb72317ea6315e,

title = "Study of ψ(2S) decays to γp{\=p}, π0p{\=p}, and ηp{\=p}, and search for p{\=p} threshold enhancements",

abstract = "The decays of ψ(2S) into γp{\=p}, π0p{\=p}, and ηp{\=p} have been studied with the CLEO-c detector using a sample of 24.5×106 ψ(2S) events obtained from e⊃+e⊃- annihilations at √s=3686MeV. The data show evidence for the excitation of several N⊃* resonances in pπ0 and pη channels in π0p{\=p} and ηp{\=p} decays, and f2 states in γp{\=p} decay. Branching fractions for decays of ψ(2S) to γp{\=p}, π0p{\=p}, and ηp{\=p} have been determined. No evidence for p{\=p} threshold enhancements was found in the reactions ψ(2S)→Xp{\=p}, where X=γ, π0, η. We do, however, find confirming evidence for a p{\=p} threshold enhancement in J/ψ→γp{\=p} as previously reported by BES.",

author = "Alexander, {J. P.} and Cassel, {D. G.} and S. Das and R. Ehrlich and L. Fields 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 Tarbert, {C. M.} and D. Besson and Pedlar, {T. K.} and J. Xavier and D. Cronin-Hennessy and J. Hietala and P. Zweber and S. Dobbs and Z. Metreveli and Seth, {K. K.} and A. Tomaradze and T. Xiao and S. Brisbane and L. Martin and A. Powell and P. Spradlin and G. Wilkinson and H. Mendez and Ge, {J. Y.} and Miller, {D. H.} and Shipsey, {I. P.J.} and B. Xin and Adams, {G. S.} and D. Hu and B. Moziak 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 F. Yang and S. Ricciardi and C. Thomas and M. Artuso and S. Blusk and R. Mountain and T. Skwarnicki and S. Stone and Wang, {J. C.} 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.}",

year = "2010",

month = nov,

day = "5",

doi = "10.1103/PhysRevD.82.092002",

language = "English (US)",

volume = "82",

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

issn = "1550-7998",

publisher = "American Physical Society",

number = "9",

}

TY - JOUR

T1 - Study of ψ(2S) decays to γpp̄, π0pp̄, and ηpp̄, and search for pp̄ threshold enhancements

AU - Alexander, J. P.

AU - Cassel, D. G.

AU - Das, S.

AU - Ehrlich, R.

AU - Fields, L.

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 - Tarbert, C. M.

AU - Besson, D.

AU - Pedlar, T. K.

AU - Xavier, J.

AU - Cronin-Hennessy, D.

AU - Hietala, J.

AU - Zweber, P.

AU - Dobbs, S.

AU - Metreveli, Z.

AU - Seth, K. K.

AU - Tomaradze, A.

AU - Xiao, T.

AU - Brisbane, S.

AU - Martin, L.

AU - Powell, A.

AU - Spradlin, P.

AU - Wilkinson, G.

AU - Mendez, H.

AU - Ge, J. Y.

AU - Miller, D. H.

AU - Shipsey, I. P.J.

AU - Xin, B.

AU - Adams, G. S.

AU - Hu, D.

AU - Moziak, B.

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 - Yang, F.

AU - Ricciardi, S.

AU - Thomas, C.

AU - Artuso, M.

AU - Blusk, S.

AU - Mountain, R.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Wang, J. C.

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.

PY - 2010/11/5

Y1 - 2010/11/5

N2 - The decays of ψ(2S) into γpp̄, π0pp̄, and ηpp̄ have been studied with the CLEO-c detector using a sample of 24.5×106 ψ(2S) events obtained from e⊃+e⊃- annihilations at √s=3686MeV. The data show evidence for the excitation of several N⊃* resonances in pπ0 and pη channels in π0pp̄ and ηpp̄ decays, and f2 states in γpp̄ decay. Branching fractions for decays of ψ(2S) to γpp̄, π0pp̄, and ηpp̄ have been determined. No evidence for pp̄ threshold enhancements was found in the reactions ψ(2S)→Xpp̄, where X=γ, π0, η. We do, however, find confirming evidence for a pp̄ threshold enhancement in J/ψ→γpp̄ as previously reported by BES.

AB - The decays of ψ(2S) into γpp̄, π0pp̄, and ηpp̄ have been studied with the CLEO-c detector using a sample of 24.5×106 ψ(2S) events obtained from e⊃+e⊃- annihilations at √s=3686MeV. The data show evidence for the excitation of several N⊃* resonances in pπ0 and pη channels in π0pp̄ and ηpp̄ decays, and f2 states in γpp̄ decay. Branching fractions for decays of ψ(2S) to γpp̄, π0pp̄, and ηpp̄ have been determined. No evidence for pp̄ threshold enhancements was found in the reactions ψ(2S)→Xpp̄, where X=γ, π0, η. We do, however, find confirming evidence for a pp̄ threshold enhancement in J/ψ→γpp̄ as previously reported by BES.

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UR - http://www.scopus.com/inward/citedby.url?scp=78651241865&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.82.092002

DO - 10.1103/PhysRevD.82.092002

M3 - Article

AN - SCOPUS:78651241865

SN - 1550-7998

VL - 82

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

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

IS - 9

M1 - 092002

ER -

Study of ψ(2S) decays to γpp̄, π0pp̄, and ηpp̄, and search for pp̄ threshold enhancements

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