J. Gaiser
Stanford University
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Featured researches published by J. Gaiser.
European Physical Journal C | 1988
Z. Jakubowski; D. Antreasyan; H. W. Bartels; D. Besset; Ch. Bieler; J. K. Bienlein; A. Bizzeti; E. D. Bloom; I. Brock; K. Brockmüller; R. Cabenda; A.M. Cartacci; M. Cavalli-Sforza; R. Clare; A. Compagnucci; G. Conforto; R. Cowan; D. Coyne; G. Drews; A. Engler; K. Fairfield; G. Folger; A. Fridman; J. Gaiser; D. Gelphman; G. Glaser; G. Godfrey; K. Graaf; F. H. Heimlich; F. H. Heinsius
AbstractUsing the Crystal Ball detector operating at the DORIS II storage ring we have measured the leptonic partial widthsГee of the Υ(1S) and Υ(2S) resonances. We find
Physics Letters B | 1982
C. Edwards; R. A. Partridge; C. Peck; F. C. Porter; D. Antreasyan; Yi-Fan Gu; W. Kollmann; M. Richardson; Konstantin Strauch; K. Wacker; A. Weinstein; D. Aschman; T.H. Burnett; M. Cavalli-Sforza; D. Coyne; C. Newman; H. Sadrozinski; D. Gelphman; R. Hofstadter; R. Horisberger; I. Kirkbride; H. Kolanoski; K. Königsmann; R. Lee; A. Liberman; J. O'Reilly; A. Osterheld; B. Pollock; J. Tompkins; E. D. Bloom
Physics Letters B | 1988
S. Keh; D. Antreasyan; H. W. Bartels; D. Besset; Ch. Bieler; J. K. Bienlein; A. Bizzeti; E. D. Bloom; I. Brock; K. Brockmüller; R. Cabenda; A.M. Cartacci; M. Cavalli-Sforza; R. Clare; A. Compagnucci; G. Conforto; S. Cooper; R. Cowan; D. Coyne; A. Engler; K. Fairfield; G. Folger; A. Fridman; J. Gaiser; D. Gelphman; G. Glaser; G. Godfrey; K. Graaf; F. H. Heimlich; F.-H. Heinsius
\Gamma _{ee} (\Upsilon (1S)) = 1.34 \pm 0.03 \pm 0.06keV
European Physical Journal A | 1988
Z. Jakubowski; C. Peck; H. Marsiske; A. Engler; A. C. König; F. H. Heimlich; P. Zschorsch; G. Drews; U. Strohbusch; D. Sievers; R.W. Kraemer; K. Wachs; C. Pegel; H. Kilian; R.T. Van de Walle; T. Kiel; B. Niczyporuk; J. Tompkins; B. van Uitert; K. Fairfield; R. Cowan; H. W. Bartels; F. Messing; G. Glaser; F. C. Porter; G. Conforto; P. Schmitt; S. Lowe; Daniel Marlow; K. Graaf
Physics Letters B | 1989
H. Janssen; D. Antreasyan; H. W. Bartels; D. Besset; Ch. Bieler; J. K. Bienlein; A. Bizzeti; E. D. Bloom; I. Brock; K. Brockmüller; R. Cabenda; A.M. Cartacci; M. Cavalli-Sforza; R. Clare; A. Compagnucci; G. Conforto; S. Cooper; R. Cowan; D. Coyne; A. Engler; K. Fairfield; G. Folger; A. Fridman; J. Gaiser; D. Gelphman; G. Glaser; G. Godfrey; K. Graaf; F. H. Heimlich; F.-H. Heinsius
and
European Physical Journal C | 1988
P. Schmitt; D. Antreasyan; H. W. Bartels; D. Besset; Ch. Bieler; J. K. Bienlein; A. Bizzeti; E. D. Bloom; I. Brock; K. Brockmüller; R. Cabenda; A.M. Cartacci; M. Cavalli-Sforza; R. Clare; A. Compagnucci; G. Conforto; S. Cooper; R. Cowan; D. Coyne; A. Engler; K. Fairfield; G. Folger; A. Fridman; J. Gaiser; D. Gelphman; G. Glaser; G. Godfrey; F. H. Heimlich; R. Hofstadter; J. Irion
European Physical Journal C | 1990
W. Maschmann; D. Antreasyan; H. W. Bartels; D. Besset; Ch. Bieler; J. K. Bienlein; A. Bizzeti; E. D. Bloom; I. Brock; K. Brockmüller; R. Cabenda; A.M. Cartacci; M. Cavalli-Sforza; R. Clare; A. Compagnucci; G. Conforto; S. Cooper; R. Cowan; D. Coyne; A. Engler; K. Fairfield; G. Folger; A. Fridman; J. Gaiser; D. Gelphman; G. Glaser; G. Godfrey; K. Graaf; F. H. Heimlich; F.-H. Heinsius
\Gamma _{ee} (\Upsilon (2S)) = 0.56 \pm 0.04 \pm 0.02keV.
European Physical Journal C | 1990
D. Antreasyan; H. W. Bartels; D. Besset; Ch. Bieler; J. K. Bienlein; Andrea Bizzeti; E. D. Bloom; I. Brock; K. Brockmüller; R. Cabenda; A.M. Cartacci; M. Cavalli-Sforza; R. Clare; A. Compagnucci; G. Conforto; S. Cooper; R. Cowan; D. Coyne; A. Engler; K. Fairfield; G. Folger; A. Fridman; J. Gaiser; D. Gelphman; G. Glaser; G. Godfrey; K. Graaf; F. H. Heimlich; F.-H. Heinsius; R. Hofstadter
European Physical Journal C | 1992
M. Kobel; D. Antreasyan; H. W. Bartels; D. Besset; Ch. Bieler; J. K. Bienlein; A. Bizetti; E. D. Bloom; I. Brock; K. Brockmüller; R. Cabenda; A.M. Cartacci; M. Cavalli-Sforza; R. Clare; A. Compagnucci; G. Conforto; S. Cooper; R. Cowan; D. Coyne; A. Engler; K. Fairfield; G. Folger; A. Fridman; J. Gaiser; D. Gelphman; G. Glaser; G. Godfrey; K. Graaf; F. H. Heimlich; F.-H. Heinsius
The effect onГee of applying different prescriptions for radiative corrections is discussed. We also measureR, the ratio of non-resonant hadronic cross section to the Born cross section of μ pair production, at c.m. energyW=9.39 GeV to beR=3.48±0.04±0.16.
European Physical Journal C | 1992
T. Lesiak; D. Antreasvan; H. W. Bartels; D. Besset; Ch. Bieler; J. K. Bienlein; A. Bizzeti; E. D. Bloom; I. Brock; K. Brockmüller; R. Cabenda; A.M. Cartacci; M. Cavalli-Sforza; R. Clare; A. Compagnucci; G. Conforto; S. Cooper; R. Cowan; D. Coyne; A. Engler; K. Fairfield; G. Folger; A. Fridman; J. Gaiser; D. Gelphman; G. Glaser; G. Godfrey; K. Graaf; F. H. Heimlich; F.-H. Heinsius
Abstract We investigate the four-photon final state produced in γγ colissions. In the π 0 π 0 channel we observe f(1270) production with predominantly helicity 2 and measure a partial width Γ γγ 2.9 +0.6 −0.4 ± keV (independent of assumptions on the helicity). We observe A 2 (1310) production in the π 0 η channel and find a partial width Γ γγ = 0.77 ± 0.18 ± 0.27 KeV (assuming helicity 2). We give an upper limit for f ≈ ηη .
