$$W\gamma$$ production and limits on anomalous $$WW\gamma$$ couplings in $$p\bar{p}$$ collisions
We measure the cross section and the difference in rapidities between photons and charged leptons for inclusive W({yields} l{nu})+{gamma} production in e{gamma} and {mu}{gamma} final states. Using data corresponding to an integrated luminosity of 4.2 fb{sup -1} collected with the D0 detector at the Fermilab Tevatron Collider, the measured cross section times branching fraction for the process p{bar p} {yields} W{gamma} + X {yields} l{nu}{gamma} + X and the distribution of the charge-signed photon-lepton rapidity difference are found to be in agreement with the standard model. These results provide the most stringent limits on anomalous WW{gamma} couplings for data from hadron colliders: -0.4 < {Delta}{Kappa}{sub {gamma}} < 0.4 and -0.08 < {lambda}{sub {gamma}} < 0.07 at the 95% C.L.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1031193
- Report Number(s):
- FERMILAB-PUB-11-486-E; PRLTAO; arXiv eprint number arXiv:1109.4432; TRN: US1200096
- Journal Information:
- Physical Review Letters, Vol. 107, Issue 24; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Wγ Production and Limits on Anomalous WWγ Couplings in pp̄ Collisions at √s=1.96 TeV
First Study of the Radiation-Amplitude Zero in W{gamma} Production and Limits on Anomalous WW{gamma} Couplings at {radical}(s)=1.96 TeV