Observation of Υ(2S)→ηΥ(1S) and search for related transitions

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; R. E. Mitchell; M. R. Shepherd; D. Besson; T. K. Pedlar; J. V. Xavier; 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; L. Martin; A. Powell; G. Wilkinson; K. M. Ecklund; W. Love; V. Savinov; H. Mendez; 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

doi:10.1103/PhysRevLett.101.192001

Observation of Υ(2S)→ηΥ(1S) and search for related transitions

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. CinabroM. 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, R. E. Mitchell, M. R. Shepherd, D. Besson, T. K. Pedlar, J. V. Xavier, 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, L. Martin, A. Powell, G. Wilkinson, K. M. Ecklund, W. Love, V. Savinov, H. Mendez, 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

Department of Physics

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Abstract

We report the first observation of Υ(2S)→ηΥ(1S), with a branching fraction B=(2.1-0.6+0.7(stat)±0.3(syst))×10-4 and a statistical significance 5.3σ. Data were acquired with the CLEO III detector at the CESR e+e- symmetric collider. This is the first process observed involving a b-quark spin flip. For related transitions, 90% confidence limits in units of 10-4 are B(Υ(2S)→π0Υ(1S))<1.8, B(Υ(3S)→ηΥ(1S))<1.8, B(Υ(3S)→π0Υ(1S)) <0.7, and B(Υ(3S)→π0Υ(2S))<5.1.

Original language	English (US)
Article number	192001
Journal	Physical Review Letters
Volume	101
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.101.192001
State	Published - Nov 3 2008

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.101.192001

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He, Q., Insler, J., Muramatsu, H., Park, C. S., Thorndike, E. H., Yang, F., Artuso, M., Blusk, S., Khalil, S., Li, J., Mountain, R., Nisar, S., Randrianarivony, K., Sultana, N., Skwarnicki, T., Stone, S., Wang, J. C., Zhang, L. M., Bonvicini, G., ... Napolitano, J. (2008). Observation of Υ(2S)→ηΥ(1S) and search for related transitions. Physical Review Letters, 101(19), Article 192001. https://doi.org/10.1103/PhysRevLett.101.192001

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, Mitchell, RE, Shepherd, MR, Besson, D, Pedlar, TK, Xavier, JV, 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, Martin, L, Powell, A, Wilkinson, G, Ecklund, KM, Love, W, Savinov, V, Mendez, H, Ge, JY, Miller, DH, Shipsey, IPJ, Xin, B, Adams, GS, Anderson, M, Cummings, JP, Danko, I, Hu, D, Moziak, B & Napolitano, J 2008, 'Observation of Υ(2S)→ηΥ(1S) and search for related transitions', Physical Review Letters, vol. 101, no. 19, 192001. https://doi.org/10.1103/PhysRevLett.101.192001

@article{93e987c1cda649eba05110f7ced0b556,

title = "Observation of Υ(2S)→ηΥ(1S) and search for related transitions",

abstract = "We report the first observation of Υ(2S)→ηΥ(1S), with a branching fraction B=(2.1-0.6+0.7(stat)±0.3(syst))×10-4 and a statistical significance 5.3σ. Data were acquired with the CLEO III detector at the CESR e+e- symmetric collider. This is the first process observed involving a b-quark spin flip. For related transitions, 90% confidence limits in units of 10-4 are B(Υ(2S)→π0Υ(1S))<1.8, B(Υ(3S)→ηΥ(1S))<1.8, B(Υ(3S)→π0Υ(1S)) <0.7, and B(Υ(3S)→π0Υ(2S))<5.1.",

author = "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 and Mitchell, {R. E.} and Shepherd, {M. R.} and D. Besson and Pedlar, {T. K.} and Xavier, {J. V.} 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 L. Martin and A. Powell and G. Wilkinson and Ecklund, {K. M.} and W. Love and V. Savinov and H. Mendez 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",

year = "2008",

month = nov,

day = "3",

doi = "10.1103/PhysRevLett.101.192001",

language = "English (US)",

volume = "101",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "19",

}

TY - JOUR

T1 - Observation of Υ(2S)→ηΥ(1S) and search for related transitions

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.

AU - Mitchell, R. E.

AU - Shepherd, M. R.

AU - Besson, D.

AU - Pedlar, T. K.

AU - Xavier, J. V.

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 - Martin, L.

AU - Powell, A.

AU - Wilkinson, G.

AU - Ecklund, K. M.

AU - Love, W.

AU - Savinov, V.

AU - Mendez, H.

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.

PY - 2008/11/3

Y1 - 2008/11/3

N2 - We report the first observation of Υ(2S)→ηΥ(1S), with a branching fraction B=(2.1-0.6+0.7(stat)±0.3(syst))×10-4 and a statistical significance 5.3σ. Data were acquired with the CLEO III detector at the CESR e+e- symmetric collider. This is the first process observed involving a b-quark spin flip. For related transitions, 90% confidence limits in units of 10-4 are B(Υ(2S)→π0Υ(1S))<1.8, B(Υ(3S)→ηΥ(1S))<1.8, B(Υ(3S)→π0Υ(1S)) <0.7, and B(Υ(3S)→π0Υ(2S))<5.1.

AB - We report the first observation of Υ(2S)→ηΥ(1S), with a branching fraction B=(2.1-0.6+0.7(stat)±0.3(syst))×10-4 and a statistical significance 5.3σ. Data were acquired with the CLEO III detector at the CESR e+e- symmetric collider. This is the first process observed involving a b-quark spin flip. For related transitions, 90% confidence limits in units of 10-4 are B(Υ(2S)→π0Υ(1S))<1.8, B(Υ(3S)→ηΥ(1S))<1.8, B(Υ(3S)→π0Υ(1S)) <0.7, and B(Υ(3S)→π0Υ(2S))<5.1.

UR - http://www.scopus.com/inward/record.url?scp=55749101197&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=55749101197&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.101.192001

DO - 10.1103/PhysRevLett.101.192001

M3 - Article

AN - SCOPUS:55749101197

SN - 0031-9007

VL - 101

JO - Physical Review Letters

JF - Physical Review Letters

IS - 19

M1 - 192001

ER -

Observation of Υ(2S)→ηΥ(1S) and search for related transitions

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