Chronology of Milestone Events in Particle Physics - DARDEN 1978B
Chronology of Milestone Events in Particle Physics

DARDEN 1978B

Darden, C.W.; Hasemann, H.; Krolzig, A.; Schmidt-Parzefall, W.; Schroder, H.; Schulz, H.D.; Selonke, F.; Steinmann, E.; Wurth, R.; Hofmann, W.; Markees, A.; Wegener, D.; Albrecht, H.; Schubert, K.R.; Bockmann, P.; Jonsson, L.;
Evidence for a Narrow Resonance at 10.01 GeV in Electron Positron Annihilations
Phys. Lett. 78B (1978) 364;

Reprinted in
J. L. Rosner, New Particles. Selected Reprints, Stony Brook, American Association of Physics Teachers (1981) 116.

Abstracts
We observe evidence for a second narrow resonance in the reaction e+e- hadrons at around 10 GeV using the DASP detector at the DORIS storage ring. The mass of the resonance is (10.01 0.02) GeV; its width is in agreement with the storage ring resolution of 9 MeV. From the integrated cross section, an electronic width of ee = (0.35 0.14) keV is derived.

Accelerator DESY-DORIS-II Detectors DASP

Related references
Analyse data from
C. W. Darden et al., Phys. Lett. 76B (1978) 246;
C. W. Darden et al., Internal report DESY-F15-78-01 (1978);
C. Berger et al., Phys. Lett. 76B (1978) 243;
S. W. Herb et al., Phys. Rev. Lett. 39 (1977) 252;
T. Appelquist and H. D. Politzer, Phys. Rev. Lett. 34 (1975) 43;
J. L. Rosner, C. Quigg, and H. B. Thacker, Phys. Lett. 74B (1978) 350;
DASP Coll., R. Brandelik et al., Phys. Lett. 56B (1975) 491;
DASP Coll., R. Brandelik et al., Phys. Lett. 67B (1977) 243;
W. R. Innes et al., Phys. Rev. Lett. 39 (1977) 1240;
J. D. Jackson and D. L. Scharre, Nucl. Instr. and Meth. 128 (1975) 13;
E. Eichten and K. Gottfried, Phys. Lett. 66B (1977) 286;

Reactions
  e+ e (2S) 9.98-10.10 GeV (Ecm) cs
  (2S) 2hadron (hadrons)

Particles studied
  (2S) mass, w

Record comments
Another confirmation of the (2S) resonance.
    
  New Comments List of Comments