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Leptoquarks and Compositeness Scales from a Contact Interaction Analysis of Deep Inelastic $e^\pm \, p$ Scattering at HERA
- Source :
- Physics letters : B
- Publication Year :
- 1995
-
Abstract
- A contact interaction analysis is presented to search for new phenomena beyond the Standard Model in deep inelastic $e^\pm p \rightarrow e^\pm \, hadrons$ scattering. The data are collected with the H1 detector at HERA and correspond to integrated luminosities of $0.909 \ {\rm pb}^{-1}$ and $2.947 \ {\rm pb}^{-1}$ for electron and positron beams, respectively. The differential cross sections $d\sigma / dQ^2$ are measured in the $Q^2$ 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.<br />Comment: 16 pages, latex, 2 figures appended as uuencoded file
- Subjects :
- Quark
Physics
Nuclear and High Energy Physics
Particle physics
Scattering
Physics beyond the Standard Model
Hadron
High Energy Physics::Phenomenology
Form factor (quantum field theory)
FOS: Physical sciences
HERA
Standard Model
High Energy Physics - Experiment
Nuclear physics
High Energy Physics - Experiment (hep-ex)
High Energy Physics::Experiment
Lepton
Subjects
Details
- Language :
- English
- ISSN :
- 03702693
- Database :
- OpenAIRE
- Journal :
- Physics letters : B
- Accession number :
- edsair.doi.dedup.....afabf23410f3cbc82fc440753eebc3ab