Study of dipion transitions among Υ(3S), Υ(2S), and Υ(1S) states

D. Cronin-Hennessy; K. Y. Gao; J. Hietala; Y. Kubota; T. Klein; B. W. Lang; R. Poling; A. W. Scott; A. Smith; P. Zweber; S. Dobbs; Z. Metreveli; K. K. Seth; A. Tomaradze; J. Ernst; K. M. Ecklund; H. Severini; W. Love; V. Savinov; A. Lopez; S. Mehrabyan; H. Mendez; J. Ramirez; G. S. Huang; D. H. Miller; V. Pavlunin; B. Sanghi; 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; N. Menaa; R. Mountain; S. Nisar; K. Randrianarivony; R. Sia; T. Skwarnicki; S. Stone; J. C. Wang; G. Bonvicini; D. Cinabro; M. Dubrovin; A. Lincoln; S. P. Pappas; A. J. Weinstein; D. M. Asner; K. W. Edwards; P. Naik; R. A. Briere; T. Ferguson; G. Tatishvili; H. Vogel; M. E. Watkins; J. L. Rosner; N. E. Adam; 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; C. D. Jones; J. Kandaswamy; D. L. Kreinick; V. E. Kuznetsov; H. Mahlke-Krüger; D. Mohapatra; P. U E Onyisi; J. R. Patterson; D. Peterson; J. Pivarski; D. Riley; A. Ryd; A. J. Sadoff; H. Schwarthoff; X. Shi; S. Stroiney; W. M. Sun; T. Wilksen; S. B. Athar; R. Patel; J. Yelton; P. Rubin; C. Cawlfield; B. I. Eisenstein; I. Karliner; D. Kim; N. Lowrey; M. Selen; E. J. White; J. Wiss; R. E. Mitchell; M. R. Shepherd; D. Besson; T. K. Pedlar

doi:10.1103/PhysRevD.76.072001

Study of dipion transitions among Υ(3S), Υ(2S), and Υ(1S) states

D. Cronin-Hennessy, K. Y. Gao, J. Hietala, Y. Kubota, T. Klein, B. W. Lang, R. Poling, A. W. Scott, A. Smith, P. Zweber, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, J. Ernst, K. M. Ecklund, H. Severini, W. Love, V. Savinov, A. LopezS. Mehrabyan, H. Mendez, J. Ramirez, G. S. Huang, D. H. Miller, V. Pavlunin, B. Sanghi, 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, N. Menaa, R. Mountain, S. Nisar, K. Randrianarivony, R. Sia, T. Skwarnicki, S. Stone, J. C. Wang, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Lincoln, S. P. Pappas, A. J. Weinstein, D. M. Asner, K. W. Edwards, P. Naik, R. A. Briere, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, J. L. Rosner, N. E. Adam, 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, C. D. Jones, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, H. Mahlke-Krüger, D. Mohapatra, P. U E Onyisi, J. R. Patterson, D. Peterson, J. Pivarski, D. Riley, A. Ryd, A. J. Sadoff, H. Schwarthoff, X. Shi, S. Stroiney, W. M. Sun, T. Wilksen, S. B. Athar, R. Patel, J. Yelton, P. Rubin, C. Cawlfield, B. I. Eisenstein, I. Karliner, D. Kim, N. Lowrey, M. Selen, E. J. White, J. Wiss, R. E. Mitchell, M. R. Shepherd, D. Besson, T. K. Pedlar

Physics and Astronomy (Twin Cities)

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Abstract

We present measurements of decay matrix elements for hadronic transitions of the form Υ(nS)→Υ(mS)ππ, where (n,m)=(3,1),(2,1),(3,2). We reconstruct charged and neutral pion modes with the final state Upsilon decaying to either μ+μ- or e+e-. Dalitz plot distributions for the 12 decay modes are fit individually as well as jointly assuming isospin symmetry, thereby measuring the matrix elements of the decay amplitude. We observe and account for the anomaly previously noted in the dipion invariant mass distribution for the Υ(3S)→Υ(1S)ππ transition and obtain good descriptions of the dynamics of the decay using the most general decay amplitude allowed by partial conservation of the axial-vector current considerations. The fits further indicate that the Υ(2S)→Υ(1S) ππ and Υ(3S)→Υ(2S)ππ transitions also show the presence of terms in the decay amplitude that were previously ignored, although at a relatively suppressed level.

Original language	English (US)
Article number	072001
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	76
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.76.072001
State	Published - Oct 4 2007

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Cronin-Hennessy, D., Gao, K. Y., Hietala, J., Kubota, Y., Klein, T., Lang, B. W., Poling, R., Scott, A. W., Smith, A., Zweber, P., Dobbs, S., Metreveli, Z., Seth, K. K., Tomaradze, A., Ernst, J., Ecklund, K. M., Severini, H., Love, W., Savinov, V., ... Pedlar, T. K. (2007). Study of dipion transitions among Υ(3S), Υ(2S), and Υ(1S) states. Physical Review D - Particles, Fields, Gravitation and Cosmology, 76(7), Article 072001. https://doi.org/10.1103/PhysRevD.76.072001

Cronin-Hennessy, D, Gao, KY, Hietala, J, Kubota, Y, Klein, T, Lang, BW, Poling, R, Scott, AW, Smith, A, Zweber, P, Dobbs, S, Metreveli, Z, Seth, KK, Tomaradze, A, Ernst, J, Ecklund, KM, Severini, H, Love, W, Savinov, V, Lopez, A, Mehrabyan, S, Mendez, H, Ramirez, J, Huang, GS, Miller, DH, Pavlunin, V, Sanghi, B, 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, Menaa, N, Mountain, R, Nisar, S, Randrianarivony, K, Sia, R, Skwarnicki, T, Stone, S, Wang, JC, Bonvicini, G, Cinabro, D, Dubrovin, M, Lincoln, A, Pappas, SP, Weinstein, AJ, Asner, DM, Edwards, KW, Naik, P, Briere, RA, Ferguson, T, Tatishvili, G, Vogel, H, Watkins, ME, Rosner, JL, Adam, NE, Alexander, JP, Cassel, DG, Duboscq, JE, Ehrlich, R, Fields, L, Galik, RS, Gibbons, L, Gray, R, Gray, SW, Hartill, DL, Heltsley, BK, Hertz, D, Jones, CD, Kandaswamy, J, Kreinick, DL, Kuznetsov, VE, Mahlke-Krüger, H, Mohapatra, D, Onyisi, PUE, Patterson, JR, Peterson, D, Pivarski, J, Riley, D, Ryd, A, Sadoff, AJ, Schwarthoff, H, Shi, X, Stroiney, S, Sun, WM, Wilksen, T, Athar, SB, Patel, R, Yelton, J, Rubin, P, Cawlfield, C, Eisenstein, BI, Karliner, I, Kim, D, Lowrey, N, Selen, M, White, EJ, Wiss, J, Mitchell, RE, Shepherd, MR, Besson, D & Pedlar, TK 2007, 'Study of dipion transitions among Υ(3S), Υ(2S), and Υ(1S) states', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 76, no. 7, 072001. https://doi.org/10.1103/PhysRevD.76.072001

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title = "Study of dipion transitions among Υ(3S), Υ(2S), and Υ(1S) states",

abstract = "We present measurements of decay matrix elements for hadronic transitions of the form Υ(nS)→Υ(mS)ππ, where (n,m)=(3,1),(2,1),(3,2). We reconstruct charged and neutral pion modes with the final state Upsilon decaying to either μ+μ- or e+e-. Dalitz plot distributions for the 12 decay modes are fit individually as well as jointly assuming isospin symmetry, thereby measuring the matrix elements of the decay amplitude. We observe and account for the anomaly previously noted in the dipion invariant mass distribution for the Υ(3S)→Υ(1S)ππ transition and obtain good descriptions of the dynamics of the decay using the most general decay amplitude allowed by partial conservation of the axial-vector current considerations. The fits further indicate that the Υ(2S)→Υ(1S) ππ and Υ(3S)→Υ(2S)ππ transitions also show the presence of terms in the decay amplitude that were previously ignored, although at a relatively suppressed level.",

author = "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 A. Smith and P. Zweber and S. Dobbs and Z. Metreveli and Seth, {K. K.} and A. Tomaradze and J. Ernst and Ecklund, {K. M.} and H. Severini and W. Love and V. Savinov and A. Lopez and S. Mehrabyan and H. Mendez and J. Ramirez and Huang, {G. S.} and Miller, {D. H.} and V. Pavlunin and B. Sanghi 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 N. Menaa and R. Mountain and S. Nisar and K. Randrianarivony and R. Sia and T. Skwarnicki and S. Stone and Wang, {J. C.} and G. Bonvicini and D. Cinabro and M. Dubrovin and A. Lincoln and Pappas, {S. P.} and Weinstein, {A. J.} and Asner, {D. M.} and Edwards, {K. W.} and P. Naik and Briere, {R. A.} and T. Ferguson and G. Tatishvili and H. Vogel and Watkins, {M. E.} and Rosner, {J. L.} and Adam, {N. E.} 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 Jones, {C. D.} and J. Kandaswamy and Kreinick, {D. L.} and Kuznetsov, {V. E.} and H. Mahlke-Kr{\"u}ger and D. Mohapatra and Onyisi, {P. U E} and Patterson, {J. R.} and D. Peterson and J. Pivarski and D. Riley and A. Ryd and Sadoff, {A. J.} and H. Schwarthoff 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 C. Cawlfield and Eisenstein, {B. I.} and I. Karliner and D. Kim 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.}",

year = "2007",

month = oct,

day = "4",

doi = "10.1103/PhysRevD.76.072001",

language = "English (US)",

volume = "76",

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

issn = "1550-7998",

number = "7",

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TY - JOUR

T1 - Study of dipion transitions among Υ(3S), Υ(2S), and Υ(1S) states

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 - Smith, A.

AU - Zweber, P.

AU - Dobbs, S.

AU - Metreveli, Z.

AU - Seth, K. K.

AU - Tomaradze, A.

AU - Ernst, J.

AU - Ecklund, K. M.

AU - Severini, H.

AU - Love, W.

AU - Savinov, V.

AU - Lopez, A.

AU - Mehrabyan, S.

AU - Mendez, H.

AU - Ramirez, J.

AU - Huang, G. S.

AU - Miller, D. H.

AU - Pavlunin, V.

AU - Sanghi, B.

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 - Menaa, N.

AU - Mountain, R.

AU - Nisar, S.

AU - Randrianarivony, K.

AU - Sia, R.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Wang, J. C.

AU - Bonvicini, G.

AU - Cinabro, D.

AU - Dubrovin, M.

AU - Lincoln, A.

AU - Pappas, S. P.

AU - Weinstein, A. J.

AU - Asner, D. M.

AU - Edwards, K. W.

AU - Naik, P.

AU - Briere, R. A.

AU - Ferguson, T.

AU - Tatishvili, G.

AU - Vogel, H.

AU - Watkins, M. E.

AU - Rosner, J. L.

AU - Adam, N. E.

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 - Jones, C. D.

AU - Kandaswamy, J.

AU - Kreinick, D. L.

AU - Kuznetsov, V. E.

AU - Mahlke-Krüger, H.

AU - Mohapatra, D.

AU - Onyisi, P. U E

AU - Patterson, J. R.

AU - Peterson, D.

AU - Pivarski, J.

AU - Riley, D.

AU - Ryd, A.

AU - Sadoff, A. J.

AU - Schwarthoff, H.

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 - Cawlfield, C.

AU - Eisenstein, B. I.

AU - Karliner, I.

AU - Kim, D.

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.

PY - 2007/10/4

Y1 - 2007/10/4

N2 - We present measurements of decay matrix elements for hadronic transitions of the form Υ(nS)→Υ(mS)ππ, where (n,m)=(3,1),(2,1),(3,2). We reconstruct charged and neutral pion modes with the final state Upsilon decaying to either μ+μ- or e+e-. Dalitz plot distributions for the 12 decay modes are fit individually as well as jointly assuming isospin symmetry, thereby measuring the matrix elements of the decay amplitude. We observe and account for the anomaly previously noted in the dipion invariant mass distribution for the Υ(3S)→Υ(1S)ππ transition and obtain good descriptions of the dynamics of the decay using the most general decay amplitude allowed by partial conservation of the axial-vector current considerations. The fits further indicate that the Υ(2S)→Υ(1S) ππ and Υ(3S)→Υ(2S)ππ transitions also show the presence of terms in the decay amplitude that were previously ignored, although at a relatively suppressed level.

AB - We present measurements of decay matrix elements for hadronic transitions of the form Υ(nS)→Υ(mS)ππ, where (n,m)=(3,1),(2,1),(3,2). We reconstruct charged and neutral pion modes with the final state Upsilon decaying to either μ+μ- or e+e-. Dalitz plot distributions for the 12 decay modes are fit individually as well as jointly assuming isospin symmetry, thereby measuring the matrix elements of the decay amplitude. We observe and account for the anomaly previously noted in the dipion invariant mass distribution for the Υ(3S)→Υ(1S)ππ transition and obtain good descriptions of the dynamics of the decay using the most general decay amplitude allowed by partial conservation of the axial-vector current considerations. The fits further indicate that the Υ(2S)→Υ(1S) ππ and Υ(3S)→Υ(2S)ππ transitions also show the presence of terms in the decay amplitude that were previously ignored, although at a relatively suppressed level.

UR - http://www.scopus.com/inward/record.url?scp=35148886084&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=35148886084&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.76.072001

DO - 10.1103/PhysRevD.76.072001

M3 - Article

AN - SCOPUS:35148886084

SN - 1550-7998

VL - 76

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

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

IS - 7

M1 - 072001

ER -

Study of dipion transitions among Υ(3S), Υ(2S), and Υ(1S) states

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