Measurement of R in e+e- annihilation for {Mathematical expression} between 7.4 and 9.4 GeV

B. Niczyporuk; Z. Jakubowski; G. Nowak; G. Folger; B. Lurz; U. Volland; H. Wegener; J. K. Bienlein; R. Graumann; H. J. Trost; M. Schmitz; F. H. Heimlich; R. Nernst; A. Schwarz; U. Strohbusch; P. Zschorsch; K. W. Chen; A. C. König; D. J. Schotanus; M. Coles; A. Engler; R. W. Kraemer; D. Marlow; F. Messing; C. Rippich; S. Youssef; A. Fridman; G. Alexander; A. Av-Shalom; G. Bella; J. Grunhaus; M. Scheer

doi:10.1007/BF01614421

Measurement of R in e⁺e^- annihilation for {Mathematical expression} between 7.4 and 9.4 GeV

B. Niczyporuk^*, Z. Jakubowski, G. Nowak, G. Folger, B. Lurz, U. Volland, H. Wegener, J. K. Bienlein, R. Graumann, H. J. Trost, M. Schmitz, F. H. Heimlich, R. Nernst, A. Schwarz, U. Strohbusch, P. Zschorsch, K. W. Chen, A. C. König, D. J. Schotanus, M. ColesA. Engler, R. W. Kraemer, D. Marlow, F. Messing, C. Rippich, S. Youssef, A. Fridman, G. Alexander, A. Av-Shalom, G. Bella, J. Grunhaus, M. Scheer

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

The ration R=σ(e⁺e^-→hadrons)/σ(e⁺e^-→ μ⁺ μ^-) was measured with the LENA detector at DORIS in a scan between 7.40 and 7.48 GeV and between 8.67 and 9.43 GeV center of mass energies. Corrected for QED radiative effects, R is found to be constant with an average value of R=3.37 ±0.06_stat±0.23_syst. No narrow resonances with Γ_ee(Γ_had/Γ_tot)⊗0.30 keV (95% C.L.) and no steps have been observed. Based on this value of R, revised values for υ(1S) resonance parameters are presented.

Original language	English
Pages (from-to)	299-309
Number of pages	11
Journal	European Physical Journal C
Volume	15
Issue number	4
DOIs	https://doi.org/10.1007/BF01614421
State	Published - Dec 1982

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Niczyporuk, B., Jakubowski, Z., Nowak, G., Folger, G., Lurz, B., Volland, U., Wegener, H., Bienlein, J. K., Graumann, R., Trost, H. J., Schmitz, M., Heimlich, F. H., Nernst, R., Schwarz, A., Strohbusch, U., Zschorsch, P., Chen, K. W., König, A. C., Schotanus, D. J., ... Scheer, M. (1982). Measurement of R in e⁺e^- annihilation for {Mathematical expression} between 7.4 and 9.4 GeV. European Physical Journal C, 15(4), 299-309. https://doi.org/10.1007/BF01614421

@article{50277e71fc04472a9a70b287042cec2b,

title = "Measurement of R in e+e- annihilation for {Mathematical expression} between 7.4 and 9.4 GeV",

abstract = "The ration R=σ(e+e-→hadrons)/σ(e+e-→ μ+ μ-) was measured with the LENA detector at DORIS in a scan between 7.40 and 7.48 GeV and between 8.67 and 9.43 GeV center of mass energies. Corrected for QED radiative effects, R is found to be constant with an average value of R=3.37 ±0.06stat±0.23syst. No narrow resonances with Γee(Γhad/Γtot)⊗0.30 keV (95% C.L.) and no steps have been observed. Based on this value of R, revised values for υ(1S) resonance parameters are presented.",

author = "B. Niczyporuk and Z. Jakubowski and G. Nowak and G. Folger and B. Lurz and U. Volland and H. Wegener and Bienlein, {J. K.} and R. Graumann and Trost, {H. J.} and M. Schmitz and Heimlich, {F. H.} and R. Nernst and A. Schwarz and U. Strohbusch and P. Zschorsch and Chen, {K. W.} and K{\"o}nig, {A. C.} and Schotanus, {D. J.} and M. Coles and A. Engler and Kraemer, {R. W.} and D. Marlow and F. Messing and C. Rippich and S. Youssef and A. Fridman and G. Alexander and A. Av-Shalom and G. Bella and J. Grunhaus and M. Scheer",

year = "1982",

month = dec,

doi = "10.1007/BF01614421",

language = "אנגלית",

volume = "15",

pages = "299--309",

journal = "European Physical Journal C",

issn = "0170-9739",

publisher = "Springer New York",

number = "4",

}

Niczyporuk, B, Jakubowski, Z, Nowak, G, Folger, G, Lurz, B, Volland, U, Wegener, H, Bienlein, JK, Graumann, R, Trost, HJ, Schmitz, M, Heimlich, FH, Nernst, R, Schwarz, A, Strohbusch, U, Zschorsch, P, Chen, KW, König, AC, Schotanus, DJ, Coles, M, Engler, A, Kraemer, RW, Marlow, D, Messing, F, Rippich, C, Youssef, S, Fridman, A, Alexander, G, Av-Shalom, A, Bella, G , Grunhaus, J & Scheer, M 1982, 'Measurement of R in e⁺e^- annihilation for {Mathematical expression} between 7.4 and 9.4 GeV', European Physical Journal C, vol. 15, no. 4, pp. 299-309. https://doi.org/10.1007/BF01614421

TY - JOUR

T1 - Measurement of R in e+e- annihilation for {Mathematical expression} between 7.4 and 9.4 GeV

AU - Niczyporuk, B.

AU - Jakubowski, Z.

AU - Nowak, G.

AU - Folger, G.

AU - Lurz, B.

AU - Volland, U.

AU - Wegener, H.

AU - Bienlein, J. K.

AU - Graumann, R.

AU - Trost, H. J.

AU - Schmitz, M.

AU - Heimlich, F. H.

AU - Nernst, R.

AU - Schwarz, A.

AU - Strohbusch, U.

AU - Zschorsch, P.

AU - Chen, K. W.

AU - König, A. C.

AU - Schotanus, D. J.

AU - Coles, M.

AU - Engler, A.

AU - Kraemer, R. W.

AU - Marlow, D.

AU - Messing, F.

AU - Rippich, C.

AU - Youssef, S.

AU - Fridman, A.

AU - Alexander, G.

AU - Av-Shalom, A.

AU - Bella, G.

AU - Grunhaus, J.

AU - Scheer, M.

PY - 1982/12

Y1 - 1982/12

N2 - The ration R=σ(e+e-→hadrons)/σ(e+e-→ μ+ μ-) was measured with the LENA detector at DORIS in a scan between 7.40 and 7.48 GeV and between 8.67 and 9.43 GeV center of mass energies. Corrected for QED radiative effects, R is found to be constant with an average value of R=3.37 ±0.06stat±0.23syst. No narrow resonances with Γee(Γhad/Γtot)⊗0.30 keV (95% C.L.) and no steps have been observed. Based on this value of R, revised values for υ(1S) resonance parameters are presented.

AB - The ration R=σ(e+e-→hadrons)/σ(e+e-→ μ+ μ-) was measured with the LENA detector at DORIS in a scan between 7.40 and 7.48 GeV and between 8.67 and 9.43 GeV center of mass energies. Corrected for QED radiative effects, R is found to be constant with an average value of R=3.37 ±0.06stat±0.23syst. No narrow resonances with Γee(Γhad/Γtot)⊗0.30 keV (95% C.L.) and no steps have been observed. Based on this value of R, revised values for υ(1S) resonance parameters are presented.

UR - http://www.scopus.com/inward/record.url?scp=33749287916&partnerID=8YFLogxK

U2 - 10.1007/BF01614421

DO - 10.1007/BF01614421

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:33749287916

SN - 0170-9739

VL - 15

SP - 299

EP - 309

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

ER -

Measurement of R in e⁺e^- annihilation for {Mathematical expression} between 7.4 and 9.4 GeV

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