ER - 40757 - 083 Limits on Anomalous Couplings of Quarks From Prompt
نویسنده
چکیده
Prompt photon production has been known to be a sensitive probe to the gluon luminosity inside a hadron because it is mainly produced by quark-gluon scattering. For the same reason prompt photon production should also be sensitive to the anomalous couplings of gluons to quarks. We will examine the effects of two specific anomalous couplings – chromoelectric and chromomagnetic dipole moments of quarks – on the prompt photon production. Using the data collected by CDF and D0 at the Tevatron we put a bound on the these anomalous couplings.
منابع مشابه
Limits on Anomalous Couplings of Quarks From Prompt Photon Data
Prompt photon production has been known to be a sensitive probe to the gluon luminosity inside a hadron because it is mainly produced by quark-gluon scattering. For the same reason prompt photon production should also be sensitive to the anomalous couplings of gluons to quarks. We will examine the effects of two specific anomalous couplings – chromoelectric and chromomagnetic dipole moments of ...
متن کاملEffects of anomalous couplings of quarks on prompt photon production
Prompt photon production is sensitive to the anomalous couplings of gluons to quarks, because it is mainly produced by quark-gluon scattering. We will examine the effects of the anomalous chromoelectric and chromomagnetic dipole moment couplings of quarks on prompt photon production. Using the data collected by CDF and D0 at the Fermilab Tevatron we put a bound on these anomalous couplings. We ...
متن کاملStudy of the Top Quark FCNC
We study the one-loop contribution of the effective flavor changing neutral couplings (FCNC) tcZ to the charm quark electric dipole moment. Using the known limits on the top and charm quarks electric dipole moments, we place limits on these FCNC anomalous couplings. Corresponding author email address: [email protected] 1
متن کاملCan we observe weak anomalous couplings of heavy quarks through three-jet events?
The rates and corresponding jet distributions for the decay 2 t b&g and the process e+e+ tfg may be sensitive to anomalous dipole-like couplings of heavy quarks to the photon and 2. In the b-quark case, after updating our previous analysis on the constraints imposed by current experiments on Zbb anomalous couplings, we show that the variation of these couplings within their presently allowed ra...
متن کاملSingle Top Quarks at the Tevatron
After many years searching for electroweak production of top quarks [1], the Tevatron collider experiments have now moved from obtaining first evidence for single top quark production to an impressive array of measurements that test the standard model in several directions. This paper describes measurements of the single top quark cross sections, limits set on the CKM matrix element Vtb , searc...
متن کامل