J/ψ and ψ(2S) radiative transitions to ηc

R. E. Mitchell; M. R. Shepherd; D. Besson; T. K. Pedlar; D. Cronin-Hennessy; K. Y. Gao; J. Hietala; Y. Kubota; T. Klein; B. W. Lang; R. Poling; A. W. Scott; P. Zweber; S. Dobbs; Z. Metreveli; K. K. Seth; A. Tomaradze; J. Libby; A. Powell; G. Wilkinson; K. M. Ecklund; W. Love; V. Savinov; A. Lopez; H. Mendez; J. Ramirez; J. Y. Ge; D. H. Miller; I. P.J. Shipsey; B. Xin; G. S. Adams; M. Anderson; J. P. Cummings; I. Danko; D. Hu; B. Moziak; J. Napolitano; Q. He; J. Insler; H. Muramatsu; C. S. Park; E. H. Thorndike; F. Yang; M. Artuso; S. Blusk; S. Khalil; J. Li; R. Mountain; S. Nisar; K. Randrianarivony; N. Sultana; T. Skwarnicki; S. Stone; J. C. Wang; L. M. Zhang; G. Bonvicini; D. Cinabro; M. Dubrovin; A. Lincoln; P. Naik; J. Rademacker; D. M. Asner; K. W. Edwards; J. Reed; R. A. Briere; T. Ferguson; G. Tatishvili; H. Vogel; M. E. Watkins; J. L. Rosner; J. P. Alexander; D. G. Cassel; J. E. Duboscq; R. Ehrlich; L. Fields; R. S. Galik; L. Gibbons; R. Gray; S. W. Gray; D. L. Hartill; B. K. Heltsley; D. Hertz; J. M. Hunt; J. Kandaswamy; D. L. Kreinick; V. E. Kuznetsov; J. Ledoux; H. Mahlke-Krüger; D. Mohapatra; P. U.E. Onyisi; J. R. Patterson; D. Peterson; D. Riley; A. Ryd; A. J. Sadoff; X. Shi; S. Stroiney; W. M. Sun; T. Wilksen; S. B. Athar; R. Patel; J. Yelton; P. Rubin; B. I. Eisenstein; I. Karliner; S. Mehrabyan; N. Lowrey; M. Selen; E. J. White; J. Wiss

doi:10.1103/PhysRevLett.102.011801

J/ψ and ψ(2S) radiative transitions to ηc

R. E. Mitchell, M. R. Shepherd, D. Besson, T. K. Pedlar, D. Cronin-Hennessy, K. Y. Gao, J. Hietala, Y. Kubota, T. Klein, B. W. Lang, R. Poling, A. W. Scott, P. Zweber, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, J. Libby, A. Powell, G. WilkinsonK. M. Ecklund, W. Love, V. Savinov, A. Lopez, H. Mendez, J. Ramirez, J. Y. Ge, D. H. Miller, I. P.J. Shipsey, B. Xin, G. S. Adams, M. Anderson, J. P. Cummings, I. Danko, D. Hu, B. Moziak, J. Napolitano, Q. He, J. Insler, H. Muramatsu, C. S. Park, E. H. Thorndike, F. Yang, M. Artuso, S. Blusk, S. Khalil, J. Li, R. Mountain, S. Nisar, K. Randrianarivony, N. Sultana, T. Skwarnicki, S. Stone, J. C. Wang, L. M. Zhang, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Lincoln, P. Naik, J. Rademacker, D. M. Asner, K. W. Edwards, J. Reed, R. A. Briere, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, J. L. Rosner, J. P. Alexander, D. G. Cassel, J. E. Duboscq, R. Ehrlich, L. Fields, R. S. Galik, L. Gibbons, R. Gray, S. W. Gray, D. L. Hartill, B. K. Heltsley, D. Hertz, J. M. Hunt, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, J. Ledoux, H. Mahlke-Krüger, D. Mohapatra, P. U.E. Onyisi, J. R. Patterson, D. Peterson, D. Riley, A. Ryd, A. J. Sadoff, X. Shi, S. Stroiney, W. M. Sun, T. Wilksen, S. B. Athar, R. Patel, J. Yelton, P. Rubin, B. I. Eisenstein, I. Karliner, S. Mehrabyan, N. Lowrey, M. Selen, E. J. White, J. Wiss

Department of Physics

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Abstract

Using 2.45×107 ψ(2S) decays collected with the CLEO-c detector at the Cornell Electron Storage Ring we present the most precise measurements of magnetic dipole transitions in the charmonium system. We measure B(ψ(2S)→γηc)=(4.32±0.16±0.60)×10-3, B(J/ψ→γηc)/B(ψ(2S)→γηc)=4.59±0. 23±0.64, and B(J/ψ→γηc)=(1.98±0.09±0.30) %. We observe a distortion in the ηc line shape due to the photon-energy dependence of the magnetic dipole transition rate. We find that measurements of the ηc mass are sensitive to the line shape, suggesting an explanation for the discrepancy between measurements of the ηc mass in radiative transitions and other production mechanisms.

Original language	English (US)
Article number	011801
Journal	Physical Review Letters
Volume	102
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.102.011801
State	Published - Jan 5 2009

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.102.011801

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Mitchell, R. E., Shepherd, M. R., Besson, D., Pedlar, T. K., Cronin-Hennessy, D., Gao, K. Y., Hietala, J., Kubota, Y., Klein, T., Lang, B. W., Poling, R., Scott, A. W., Zweber, P., Dobbs, S., Metreveli, Z., Seth, K. K., Tomaradze, A., Libby, J., Powell, A., ... Wiss, J. (2009). J/ψ and ψ(2S) radiative transitions to ηc. Physical Review Letters, 102(1), Article 011801. https://doi.org/10.1103/PhysRevLett.102.011801

Mitchell, RE, Shepherd, MR, Besson, D, Pedlar, TK, Cronin-Hennessy, D, Gao, KY, Hietala, J, Kubota, Y, Klein, T, Lang, BW, Poling, R, Scott, AW, Zweber, P, Dobbs, S, Metreveli, Z, Seth, KK, Tomaradze, A, Libby, J, Powell, A, Wilkinson, G, Ecklund, KM, Love, W, Savinov, V, Lopez, A, Mendez, H, Ramirez, J, Ge, JY, Miller, DH, Shipsey, IPJ, Xin, B, Adams, GS, Anderson, M, Cummings, JP, Danko, I, Hu, D, Moziak, B, Napolitano, J, He, Q, Insler, J, Muramatsu, H, Park, CS, Thorndike, EH, Yang, F, Artuso, M , Blusk, S, Khalil, S, Li, J, Mountain, R, Nisar, S, Randrianarivony, K, Sultana, N, Skwarnicki, T, Stone, S, Wang, JC, Zhang, LM, Bonvicini, G, Cinabro, D, Dubrovin, M, Lincoln, A, Naik, P, Rademacker, J, Asner, DM, Edwards, KW, Reed, J, Briere, RA, Ferguson, T, Tatishvili, G, Vogel, H, Watkins, ME, Rosner, JL, Alexander, JP, Cassel, DG, Duboscq, JE, Ehrlich, R, Fields, L, Galik, RS, Gibbons, L, Gray, R, Gray, SW, Hartill, DL, Heltsley, BK, Hertz, D, Hunt, JM, Kandaswamy, J, Kreinick, DL, Kuznetsov, VE, Ledoux, J, Mahlke-Krüger, H, Mohapatra, D, Onyisi, PUE, Patterson, JR, Peterson, D, Riley, D, Ryd, A, Sadoff, AJ, Shi, X, Stroiney, S, Sun, WM, Wilksen, T, Athar, SB, Patel, R, Yelton, J, Rubin, P, Eisenstein, BI, Karliner, I, Mehrabyan, S, Lowrey, N, Selen, M, White, EJ & Wiss, J 2009, 'J/ψ and ψ(2S) radiative transitions to ηc', Physical Review Letters, vol. 102, no. 1, 011801. https://doi.org/10.1103/PhysRevLett.102.011801

@article{9562109bbf024fcc92eec25898d65984,

title = "J/ψ and ψ(2S) radiative transitions to ηc",

abstract = "Using 2.45×107 ψ(2S) decays collected with the CLEO-c detector at the Cornell Electron Storage Ring we present the most precise measurements of magnetic dipole transitions in the charmonium system. We measure B(ψ(2S)→γηc)=(4.32±0.16±0.60)×10-3, B(J/ψ→γηc)/B(ψ(2S)→γηc)=4.59±0. 23±0.64, and B(J/ψ→γηc)=(1.98±0.09±0.30) %. We observe a distortion in the ηc line shape due to the photon-energy dependence of the magnetic dipole transition rate. We find that measurements of the ηc mass are sensitive to the line shape, suggesting an explanation for the discrepancy between measurements of the ηc mass in radiative transitions and other production mechanisms.",

author = "Mitchell, {R. E.} and Shepherd, {M. R.} and D. Besson and Pedlar, {T. K.} and D. Cronin-Hennessy and Gao, {K. Y.} and J. Hietala and Y. Kubota and T. Klein and Lang, {B. W.} and R. Poling and Scott, {A. W.} and P. Zweber and S. Dobbs and Z. Metreveli and Seth, {K. K.} and A. Tomaradze and J. Libby and A. Powell and G. Wilkinson and Ecklund, {K. M.} and W. Love and V. Savinov and A. Lopez and H. Mendez and J. Ramirez and Ge, {J. Y.} and Miller, {D. H.} and Shipsey, {I. P.J.} and B. Xin and Adams, {G. S.} and M. Anderson and Cummings, {J. P.} and I. Danko and D. Hu and B. Moziak and J. Napolitano and Q. He and J. Insler and H. Muramatsu and Park, {C. S.} and Thorndike, {E. H.} and F. Yang and M. Artuso and S. Blusk and S. Khalil and J. Li and R. Mountain and S. Nisar and K. Randrianarivony and N. Sultana and T. Skwarnicki and S. Stone and Wang, {J. C.} and Zhang, {L. M.} and G. Bonvicini and D. Cinabro and M. Dubrovin and A. Lincoln and P. Naik and J. Rademacker and Asner, {D. M.} and Edwards, {K. W.} and J. Reed and Briere, {R. A.} and T. Ferguson and G. Tatishvili and H. Vogel and Watkins, {M. E.} and Rosner, {J. L.} and Alexander, {J. P.} and Cassel, {D. G.} and Duboscq, {J. E.} and R. Ehrlich and L. Fields and Galik, {R. S.} and L. Gibbons and R. Gray and Gray, {S. W.} and Hartill, {D. L.} and Heltsley, {B. K.} and D. Hertz and Hunt, {J. M.} and J. Kandaswamy and Kreinick, {D. L.} and Kuznetsov, {V. E.} and J. Ledoux and H. Mahlke-Kr{\"u}ger and D. Mohapatra and Onyisi, {P. U.E.} and Patterson, {J. R.} and D. Peterson and D. Riley and A. Ryd and Sadoff, {A. J.} and X. Shi and S. Stroiney and Sun, {W. M.} and T. Wilksen and Athar, {S. B.} and R. Patel and J. Yelton and P. Rubin and Eisenstein, {B. I.} and I. Karliner and S. Mehrabyan and N. Lowrey and M. Selen and White, {E. J.} and J. Wiss",

year = "2009",

month = jan,

day = "5",

doi = "10.1103/PhysRevLett.102.011801",

language = "English (US)",

volume = "102",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - J/ψ and ψ(2S) radiative transitions to ηc

AU - Mitchell, R. E.

AU - Shepherd, M. R.

AU - Besson, D.

AU - Pedlar, T. K.

AU - Cronin-Hennessy, D.

AU - Gao, K. Y.

AU - Hietala, J.

AU - Kubota, Y.

AU - Klein, T.

AU - Lang, B. W.

AU - Poling, R.

AU - Scott, A. W.

AU - Zweber, P.

AU - Dobbs, S.

AU - Metreveli, Z.

AU - Seth, K. K.

AU - Tomaradze, A.

AU - Libby, J.

AU - Powell, A.

AU - Wilkinson, G.

AU - Ecklund, K. M.

AU - Love, W.

AU - Savinov, V.

AU - Lopez, A.

AU - Mendez, H.

AU - Ramirez, J.

AU - Ge, J. Y.

AU - Miller, D. H.

AU - Shipsey, I. P.J.

AU - Xin, B.

AU - Adams, G. S.

AU - Anderson, M.

AU - Cummings, J. P.

AU - Danko, I.

AU - Hu, D.

AU - Moziak, B.

AU - Napolitano, J.

AU - He, Q.

AU - Insler, J.

AU - Muramatsu, H.

AU - Park, C. S.

AU - Thorndike, E. H.

AU - Yang, F.

AU - Artuso, M.

AU - Blusk, S.

AU - Khalil, S.

AU - Li, J.

AU - Mountain, R.

AU - Nisar, S.

AU - Randrianarivony, K.

AU - Sultana, N.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Wang, J. C.

AU - Zhang, L. M.

AU - Bonvicini, G.

AU - Cinabro, D.

AU - Dubrovin, M.

AU - Lincoln, A.

AU - Naik, P.

AU - Rademacker, J.

AU - Asner, D. M.

AU - Edwards, K. W.

AU - Reed, J.

AU - Briere, R. A.

AU - Ferguson, T.

AU - Tatishvili, G.

AU - Vogel, H.

AU - Watkins, M. E.

AU - Rosner, J. L.

AU - Alexander, J. P.

AU - Cassel, D. G.

AU - Duboscq, J. E.

AU - Ehrlich, R.

AU - Fields, L.

AU - Galik, R. S.

AU - Gibbons, L.

AU - Gray, R.

AU - Gray, S. W.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Hertz, D.

AU - Hunt, J. M.

AU - Kandaswamy, J.

AU - Kreinick, D. L.

AU - Kuznetsov, V. E.

AU - Ledoux, J.

AU - Mahlke-Krüger, H.

AU - Mohapatra, D.

AU - Onyisi, P. U.E.

AU - Patterson, J. R.

AU - Peterson, D.

AU - Riley, D.

AU - Ryd, A.

AU - Sadoff, A. J.

AU - Shi, X.

AU - Stroiney, S.

AU - Sun, W. M.

AU - Wilksen, T.

AU - Athar, S. B.

AU - Patel, R.

AU - Yelton, J.

AU - Rubin, P.

AU - Eisenstein, B. I.

AU - Karliner, I.

AU - Mehrabyan, S.

AU - Lowrey, N.

AU - Selen, M.

AU - White, E. J.

AU - Wiss, J.

PY - 2009/1/5

Y1 - 2009/1/5

N2 - Using 2.45×107 ψ(2S) decays collected with the CLEO-c detector at the Cornell Electron Storage Ring we present the most precise measurements of magnetic dipole transitions in the charmonium system. We measure B(ψ(2S)→γηc)=(4.32±0.16±0.60)×10-3, B(J/ψ→γηc)/B(ψ(2S)→γηc)=4.59±0. 23±0.64, and B(J/ψ→γηc)=(1.98±0.09±0.30) %. We observe a distortion in the ηc line shape due to the photon-energy dependence of the magnetic dipole transition rate. We find that measurements of the ηc mass are sensitive to the line shape, suggesting an explanation for the discrepancy between measurements of the ηc mass in radiative transitions and other production mechanisms.

AB - Using 2.45×107 ψ(2S) decays collected with the CLEO-c detector at the Cornell Electron Storage Ring we present the most precise measurements of magnetic dipole transitions in the charmonium system. We measure B(ψ(2S)→γηc)=(4.32±0.16±0.60)×10-3, B(J/ψ→γηc)/B(ψ(2S)→γηc)=4.59±0. 23±0.64, and B(J/ψ→γηc)=(1.98±0.09±0.30) %. We observe a distortion in the ηc line shape due to the photon-energy dependence of the magnetic dipole transition rate. We find that measurements of the ηc mass are sensitive to the line shape, suggesting an explanation for the discrepancy between measurements of the ηc mass in radiative transitions and other production mechanisms.

UR - http://www.scopus.com/inward/record.url?scp=58649119361&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58649119361&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.102.011801

DO - 10.1103/PhysRevLett.102.011801

M3 - Article

AN - SCOPUS:58649119361

SN - 0031-9007

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 1

M1 - 011801

ER -

J/ψ and ψ(2S) radiative transitions to ηc

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