Determination of the electronic branching ratio of the Υ{hooked}(9.46) and an upper limit for its total width

Ch Berger; W. Lackas; F. Raupach; W. Wagner; G. Alexander; J. Bürger; L. Criegee; H. C. Dehne; R. Devenish; G. Flügge; G. Franke; Ch Gerke; E. Hackmack; P. Harms; G. Horlitz; G. Knies; E. Lehmann; B. Stella; R. L. Thompson; U. Timm; P. Waloschek; G. C. Winter; S. Wolff; W. Zimmermann; O. Achterberg; V. Blobel; L. Boesten; H. Daumann; A. F. Garfinkel; H. Kapitza; B. Koppitz; W. Lührsen; R. Maschuw; H. Spitzer; R. Van Staa; G. Wetjen; A. Bäcker; K. Derikum; C. Grupen; H. J. Meyer; B. Neumann; G. Zech; H. J. Daum; H. Meyer; O. Meyer; M. Rössler; K. Wacker

doi:10.1016/0370-2693(80)90374-3

Determination of the electronic branching ratio of the Υ{hooked}(9.46) and an upper limit for its total width

Ch Berger^*, W. Lackas, F. Raupach, W. Wagner, G. Alexander, J. Bürger, L. Criegee, H. C. Dehne, R. Devenish, G. Flügge, G. Franke, Ch Gerke, E. Hackmack, P. Harms, G. Horlitz, G. Knies, E. Lehmann, B. Stella, R. L. Thompson, U. TimmP. Waloschek, G. C. Winter, S. Wolff, W. Zimmermann, O. Achterberg, V. Blobel, L. Boesten, H. Daumann, A. F. Garfinkel, H. Kapitza, B. Koppitz, W. Lührsen, R. Maschuw, H. Spitzer, R. Van Staa, G. Wetjen, A. Bäcker, K. Derikum, C. Grupen, H. J. Meyer, B. Neumann, G. Zech, H. J. Daum, H. Meyer, O. Meyer, M. Rössler, K. Wacker

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We have measured the reaction e⁺e^- → e⁺e^- at the Υ{hooked} Using athe excess of electron pairs over the QED expectation we obtain an electronic branching ratio of B_ee = (5.1 ± 3.0) %. Combining this with publishe values of the muonic branching ratio B_μμ we conclude that the Υ{hooked} is a narrow state with a total width < 180 keV at 95% C.L.

Original language	English
Pages (from-to)	497-499
Number of pages	3
Journal	Physics Letters B
Volume	93
Issue number	4
DOIs	https://doi.org/10.1016/0370-2693(80)90374-3
State	Published - 30 Jun 1980
Externally published	Yes

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Berger, C., Lackas, W., Raupach, F., Wagner, W., Alexander, G., Bürger, J., Criegee, L., Dehne, H. C., Devenish, R., Flügge, G., Franke, G., Gerke, C., Hackmack, E., Harms, P., Horlitz, G., Knies, G., Lehmann, E., Stella, B., Thompson, R. L., ... Wacker, K. (1980). Determination of the electronic branching ratio of the Υ{hooked}(9.46) and an upper limit for its total width. Physics Letters B, 93(4), 497-499. https://doi.org/10.1016/0370-2693(80)90374-3

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title = "Determination of the electronic branching ratio of the Υ{hooked}(9.46) and an upper limit for its total width",

abstract = "We have measured the reaction e+e- → e+e- at the Υ{hooked} Using athe excess of electron pairs over the QED expectation we obtain an electronic branching ratio of Bee = (5.1 ± 3.0) %. Combining this with publishe values of the muonic branching ratio Bμμ we conclude that the Υ{hooked} is a narrow state with a total width < 180 keV at 95% C.L.",

author = "Ch Berger and W. Lackas and F. Raupach and W. Wagner and G. Alexander and J. B{\"u}rger and L. Criegee and Dehne, {H. C.} and R. Devenish and G. Fl{\"u}gge and G. Franke and Ch Gerke and E. Hackmack and P. Harms and G. Horlitz and G. Knies and E. Lehmann and B. Stella and Thompson, {R. L.} and U. Timm and P. Waloschek and Winter, {G. C.} and S. Wolff and W. Zimmermann and O. Achterberg and V. Blobel and L. Boesten and H. Daumann and Garfinkel, {A. F.} and H. Kapitza and B. Koppitz and W. L{\"u}hrsen and R. Maschuw and H. Spitzer and {Van Staa}, R. and G. Wetjen and A. B{\"a}cker and K. Derikum and C. Grupen and Meyer, {H. J.} and B. Neumann and G. Zech and Daum, {H. J.} and H. Meyer and O. Meyer and M. R{\"o}ssler and K. Wacker",

year = "1980",

month = jun,

day = "30",

doi = "10.1016/0370-2693(80)90374-3",

language = "אנגלית",

volume = "93",

pages = "497--499",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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number = "4",

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Berger, C, Lackas, W, Raupach, F, Wagner, W, Alexander, G, Bürger, J, Criegee, L, Dehne, HC, Devenish, R, Flügge, G, Franke, G, Gerke, C, Hackmack, E, Harms, P, Horlitz, G, Knies, G, Lehmann, E, Stella, B, Thompson, RL, Timm, U, Waloschek, P, Winter, GC, Wolff, S, Zimmermann, W, Achterberg, O, Blobel, V, Boesten, L, Daumann, H, Garfinkel, AF, Kapitza, H, Koppitz, B, Lührsen, W, Maschuw, R, Spitzer, H, Van Staa, R, Wetjen, G, Bäcker, A, Derikum, K, Grupen, C, Meyer, HJ, Neumann, B, Zech, G, Daum, HJ, Meyer, H, Meyer, O, Rössler, M & Wacker, K 1980, 'Determination of the electronic branching ratio of the Υ{hooked}(9.46) and an upper limit for its total width', Physics Letters B, vol. 93, no. 4, pp. 497-499. https://doi.org/10.1016/0370-2693(80)90374-3

TY - JOUR

T1 - Determination of the electronic branching ratio of the Υ{hooked}(9.46) and an upper limit for its total width

AU - Berger, Ch

AU - Lackas, W.

AU - Raupach, F.

AU - Wagner, W.

AU - Alexander, G.

AU - Bürger, J.

AU - Criegee, L.

AU - Dehne, H. C.

AU - Devenish, R.

AU - Flügge, G.

AU - Franke, G.

AU - Gerke, Ch

AU - Hackmack, E.

AU - Harms, P.

AU - Horlitz, G.

AU - Knies, G.

AU - Lehmann, E.

AU - Stella, B.

AU - Thompson, R. L.

AU - Timm, U.

AU - Waloschek, P.

AU - Winter, G. C.

AU - Wolff, S.

AU - Zimmermann, W.

AU - Achterberg, O.

AU - Blobel, V.

AU - Boesten, L.

AU - Daumann, H.

AU - Garfinkel, A. F.

AU - Kapitza, H.

AU - Koppitz, B.

AU - Lührsen, W.

AU - Maschuw, R.

AU - Spitzer, H.

AU - Van Staa, R.

AU - Wetjen, G.

AU - Bäcker, A.

AU - Derikum, K.

AU - Grupen, C.

AU - Meyer, H. J.

AU - Neumann, B.

AU - Zech, G.

AU - Daum, H. J.

AU - Meyer, H.

AU - Meyer, O.

AU - Rössler, M.

AU - Wacker, K.

PY - 1980/6/30

Y1 - 1980/6/30

N2 - We have measured the reaction e+e- → e+e- at the Υ{hooked} Using athe excess of electron pairs over the QED expectation we obtain an electronic branching ratio of Bee = (5.1 ± 3.0) %. Combining this with publishe values of the muonic branching ratio Bμμ we conclude that the Υ{hooked} is a narrow state with a total width < 180 keV at 95% C.L.

AB - We have measured the reaction e+e- → e+e- at the Υ{hooked} Using athe excess of electron pairs over the QED expectation we obtain an electronic branching ratio of Bee = (5.1 ± 3.0) %. Combining this with publishe values of the muonic branching ratio Bμμ we conclude that the Υ{hooked} is a narrow state with a total width < 180 keV at 95% C.L.

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U2 - 10.1016/0370-2693(80)90374-3

DO - 10.1016/0370-2693(80)90374-3

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AN - SCOPUS:0039383868

SN - 0370-2693

VL - 93

SP - 497

EP - 499

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 4

ER -

Determination of the electronic branching ratio of the Υ{hooked}(9.46) and an upper limit for its total width

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