First observation of a Υ(1D) state

G. Bonvicini; D. Cinabro; M. Dubrovin; A. Bornheim; E. Lipeles; S. P. Pappas; A. Shapiro; A. J. Weinstein; R. A. Briere; G. P. Chen; T. Ferguson; G. Tatishvili; H. Vogel; M. E. Watkins; N. E. Adam; J. P. Alexander; K. Berkelman; V. Boisvert; D. G. Cassel; J. E. Duboscq; K. M. Ecklund; R. Ehrlich; R. S. Galik; L. Gibbons; B. Gittelman; S. W. Gray; D. L. Hartill; B. K. Heltsley; L. Hsu; C. D. Jones; J. Kandaswamy; D. L. Kreinick; V. E. Kuznetsov; A. Magerkurth; H. Mahlke-Krüger; T. O. Meyer; J. R. Patterson; T. K. Pedlar; D. Peterson; J. Pivarski; D. Riley; J. L. Rosner; A. J. Sadoff; H. Schwarthoff; M. R. Shepherd; W. M. Sun; J. G. Thayer; Y. Kubota; R. Poling; D. Cronin-Hennessy

doi:10.1103/PhysRevD.70.032001

First observation of a Υ(1D) state

G. Bonvicini, D. Cinabro, M. Dubrovin, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, A. J. Weinstein, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, N. E. Adam, J. P. Alexander, K. Berkelman, V. Boisvert, D. G. Cassel, J. E. DuboscqK. M. Ecklund, R. Ehrlich, R. S. Galik, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, L. Hsu, C. D. Jones, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, A. Magerkurth, H. Mahlke-Krüger, T. O. Meyer, J. R. Patterson, T. K. Pedlar, D. Peterson, J. Pivarski, D. Riley, J. L. Rosner, A. J. Sadoff, H. Schwarthoff, M. R. Shepherd, W. M. Sun, J. G. Thayer, Y. Kubota, R. Poling, D. Cronin-Hennessy

Physics and Astronomy (Twin Cities)

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Abstract

We present the first evidence for the production of Υ(1D) states in the four-photon cascade, Υ(3S) →γχ_b(2P), χ_b(2P)→γΥ(1D), Υ(1D) →γχ_b(1P), χ_b(1P)→γΥ(1S) , followed by the Υ(1S) annihilation into e⁺e^- or μ⁺μ^-. The signal has a significance of 10.2 standard deviations. The measured product branching ratio for these five decays, (2.5±0.5±0.5)×10^-5, is consistent with the theoretical estimates. The data are dominated by the production of one Υ(1D) state consistent with the J=2 assignment. Its mass is determined to be (10161.1±0.6±1.6) MeV, which is consistent with the predictions from potential models and lattice QCD calculations. We also searched for Υ(3S)→γχ_b(2P), χ_b(2P) →γΥ(1D), followed by either Υ(1D)→ηΥ(1S) or Υ(1D)→π⁺π^-Υ(1S). We find no evidence for such decays and set upper limits on the product branching ratios.

Original language	English (US)
Article number	032001
Pages (from-to)	032001-1-032001-7
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	70
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.70.032001 https://doi.org/10.1103/PhysRevD.70.032001
State	Published - Aug 15 2004

Bibliographical note

Funding Information:
Financial support provided by the National Natural Science Foundation of China (No. 51478454) and the special fund from the State Key Laboratory of Environmental Aquatic Chemistry (No. 13Z04ESPCT) are gratefully acknowledged.

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Bonvicini, G., Cinabro, D., Dubrovin, M., Bornheim, A., Lipeles, E., Pappas, S. P., Shapiro, A., Weinstein, A. J., Briere, R. A., Chen, G. P., Ferguson, T., Tatishvili, G., Vogel, H., Watkins, M. E., Adam, N. E., Alexander, J. P., Berkelman, K., Boisvert, V., Cassel, D. G., ... Cronin-Hennessy, D. (2004). First observation of a Υ(1D) state. Physical Review D - Particles, Fields, Gravitation and Cosmology, 70(3), 032001-1-032001-7. Article 032001. https://doi.org/10.1103/PhysRevD.70.032001, https://doi.org/10.1103/PhysRevD.70.032001

Bonvicini, G, Cinabro, D, Dubrovin, M, Bornheim, A, Lipeles, E, Pappas, SP, Shapiro, A, Weinstein, AJ, Briere, RA, Chen, GP, Ferguson, T, Tatishvili, G, Vogel, H, Watkins, ME, Adam, NE, Alexander, JP, Berkelman, K, Boisvert, V, Cassel, DG, Duboscq, JE, Ecklund, KM, Ehrlich, R, Galik, RS, Gibbons, L, Gittelman, B, Gray, SW, Hartill, DL, Heltsley, BK, Hsu, L, Jones, CD, Kandaswamy, J, Kreinick, DL, Kuznetsov, VE, Magerkurth, A, Mahlke-Krüger, H, Meyer, TO, Patterson, JR, Pedlar, TK, Peterson, D, Pivarski, J, Riley, D, Rosner, JL, Sadoff, AJ, Schwarthoff, H, Shepherd, MR, Sun, WM, Thayer, JG, Kubota, Y, Poling, R & Cronin-Hennessy, D 2004, 'First observation of a Υ(1D) state', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 70, no. 3, 032001, pp. 032001-1-032001-7. https://doi.org/10.1103/PhysRevD.70.032001, https://doi.org/10.1103/PhysRevD.70.032001

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title = "First observation of a Υ(1D) state",

abstract = "We present the first evidence for the production of Υ(1D) states in the four-photon cascade, Υ(3S) →γχb(2P), χb(2P)→γΥ(1D), Υ(1D) →γχb(1P), χb(1P)→γΥ(1S) , followed by the Υ(1S) annihilation into e+e- or μ+μ-. The signal has a significance of 10.2 standard deviations. The measured product branching ratio for these five decays, (2.5±0.5±0.5)×10-5, is consistent with the theoretical estimates. The data are dominated by the production of one Υ(1D) state consistent with the J=2 assignment. Its mass is determined to be (10161.1±0.6±1.6) MeV, which is consistent with the predictions from potential models and lattice QCD calculations. We also searched for Υ(3S)→γχb(2P), χb(2P) →γΥ(1D), followed by either Υ(1D)→ηΥ(1S) or Υ(1D)→π+π-Υ(1S). We find no evidence for such decays and set upper limits on the product branching ratios.",

author = "G. Bonvicini and D. Cinabro and M. Dubrovin and A. Bornheim and E. Lipeles and Pappas, {S. P.} and A. Shapiro and Weinstein, {A. J.} and Briere, {R. A.} and Chen, {G. P.} and T. Ferguson and G. Tatishvili and H. Vogel and Watkins, {M. E.} and Adam, {N. E.} and Alexander, {J. P.} and K. Berkelman and V. Boisvert and Cassel, {D. G.} and Duboscq, {J. E.} and Ecklund, {K. M.} and R. Ehrlich and Galik, {R. S.} and L. Gibbons and B. Gittelman and Gray, {S. W.} and Hartill, {D. L.} and Heltsley, {B. K.} and L. Hsu and Jones, {C. D.} and J. Kandaswamy and Kreinick, {D. L.} and Kuznetsov, {V. E.} and A. Magerkurth and H. Mahlke-Kr{\"u}ger and Meyer, {T. O.} and Patterson, {J. R.} and Pedlar, {T. K.} and D. Peterson and J. Pivarski and D. Riley and Rosner, {J. L.} and Sadoff, {A. J.} and H. Schwarthoff and Shepherd, {M. R.} and Sun, {W. M.} and Thayer, {J. G.} and Y. Kubota and R. Poling and D. Cronin-Hennessy",

note = "Funding Information: Financial support provided by the National Natural Science Foundation of China (No. 51478454) and the special fund from the State Key Laboratory of Environmental Aquatic Chemistry (No. 13Z04ESPCT) are gratefully acknowledged.",

year = "2004",

month = aug,

day = "15",

doi = "10.1103/PhysRevD.70.032001",

language = "English (US)",

volume = "70",

pages = "032001--1--032001--7",

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

issn = "0556-2821",

publisher = "American Institute of Physics Publising LLC",

number = "3",

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T1 - First observation of a Υ(1D) state

AU - Bonvicini, G.

AU - Cinabro, D.

AU - Dubrovin, M.

AU - Bornheim, A.

AU - Lipeles, E.

AU - Pappas, S. P.

AU - Shapiro, A.

AU - Weinstein, A. J.

AU - Briere, R. A.

AU - Chen, G. P.

AU - Ferguson, T.

AU - Tatishvili, G.

AU - Vogel, H.

AU - Watkins, M. E.

AU - Adam, N. E.

AU - Alexander, J. P.

AU - Berkelman, K.

AU - Boisvert, V.

AU - Cassel, D. G.

AU - Duboscq, J. E.

AU - Ecklund, K. M.

AU - Ehrlich, R.

AU - Galik, R. S.

AU - Gibbons, L.

AU - Gittelman, B.

AU - Gray, S. W.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Hsu, L.

AU - Jones, C. D.

AU - Kandaswamy, J.

AU - Kreinick, D. L.

AU - Kuznetsov, V. E.

AU - Magerkurth, A.

AU - Mahlke-Krüger, H.

AU - Meyer, T. O.

AU - Patterson, J. R.

AU - Pedlar, T. K.

AU - Peterson, D.

AU - Pivarski, J.

AU - Riley, D.

AU - Rosner, J. L.

AU - Sadoff, A. J.

AU - Schwarthoff, H.

AU - Shepherd, M. R.

AU - Sun, W. M.

AU - Thayer, J. G.

AU - Kubota, Y.

AU - Poling, R.

AU - Cronin-Hennessy, D.

N1 - Funding Information: Financial support provided by the National Natural Science Foundation of China (No. 51478454) and the special fund from the State Key Laboratory of Environmental Aquatic Chemistry (No. 13Z04ESPCT) are gratefully acknowledged.

PY - 2004/8/15

Y1 - 2004/8/15

N2 - We present the first evidence for the production of Υ(1D) states in the four-photon cascade, Υ(3S) →γχb(2P), χb(2P)→γΥ(1D), Υ(1D) →γχb(1P), χb(1P)→γΥ(1S) , followed by the Υ(1S) annihilation into e+e- or μ+μ-. The signal has a significance of 10.2 standard deviations. The measured product branching ratio for these five decays, (2.5±0.5±0.5)×10-5, is consistent with the theoretical estimates. The data are dominated by the production of one Υ(1D) state consistent with the J=2 assignment. Its mass is determined to be (10161.1±0.6±1.6) MeV, which is consistent with the predictions from potential models and lattice QCD calculations. We also searched for Υ(3S)→γχb(2P), χb(2P) →γΥ(1D), followed by either Υ(1D)→ηΥ(1S) or Υ(1D)→π+π-Υ(1S). We find no evidence for such decays and set upper limits on the product branching ratios.

AB - We present the first evidence for the production of Υ(1D) states in the four-photon cascade, Υ(3S) →γχb(2P), χb(2P)→γΥ(1D), Υ(1D) →γχb(1P), χb(1P)→γΥ(1S) , followed by the Υ(1S) annihilation into e+e- or μ+μ-. The signal has a significance of 10.2 standard deviations. The measured product branching ratio for these five decays, (2.5±0.5±0.5)×10-5, is consistent with the theoretical estimates. The data are dominated by the production of one Υ(1D) state consistent with the J=2 assignment. Its mass is determined to be (10161.1±0.6±1.6) MeV, which is consistent with the predictions from potential models and lattice QCD calculations. We also searched for Υ(3S)→γχb(2P), χb(2P) →γΥ(1D), followed by either Υ(1D)→ηΥ(1S) or Υ(1D)→π+π-Υ(1S). We find no evidence for such decays and set upper limits on the product branching ratios.

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UR - http://www.scopus.com/inward/citedby.url?scp=85039593267&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.70.032001

DO - 10.1103/PhysRevD.70.032001

M3 - Article

AN - SCOPUS:37649032620

SN - 0556-2821

VL - 70

SP - 032001-1-032001-7

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

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

IS - 3

M1 - 032001

ER -

First observation of a Υ(1D) state

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