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Leptoquarks and compositeness scales from a contact interaction analysis of deep inelastic e+- p scattering at HERA

Collaboration
Apr, 1995
15 pages
Published in:
  • Phys.Lett.B 353 (1995) 578-588
e-Print:
DOI:
Report number:
  • DESY-95-079
Experiments:
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Abstract:
A contact interaction analysis is presented to search for new phenomena beyond the Standard Model in deep inelastic e ±p→e ± hadronse~\pm p \rightarrow e~\pm \, hadrons scattering. The data are collected with the H1 detector at HERA and correspond to integrated luminosities of 0.909 pb −10.909 \ {\rm pb}~{-1} and 2.947 pb −12.947 \ {\rm pb}~{-1} for electron and positron beams, respectively. The differential cross sections dσ/dQ 2d\sigma / dQ~2 are measured in the Q 2Q~2 range bet\-ween 160 \ \GeV~2 and 20,000 \ \GeV~2. The absence of any significant deviation from the Standard Model prediction is used to constrain the couplings and masses of new leptoquarks and to set limits on electron--quark compositeness scales and on the radius of light quarks.
Note:
  • 16 pages, latex, 2 figures appended as uuencoded file Report-no: DESY 95-079
  • electron p: colliding beams
  • colliding beams: electron p
  • positron p: colliding beams
  • colliding beams: positron p
  • electron p: deep inelastic scattering
  • deep inelastic scattering: electron p
  • positron p: deep inelastic scattering
  • deep inelastic scattering: positron p
  • hadron: multiple production
  • multiple production: hadron