W + W − can be produced directly by triple gauge coupling:qq → γ, Z → WW,or as decay products of ... more W + W − can be produced directly by triple gauge coupling:qq → γ, Z → WW,or as decay products of standard model Higgs bosons ortt pairs.The Tevatron search for the decay H → W + W − led to refinement of the techniques for isolating the W pair signal. At √ s = 1.96 TeV the cross sections for direct W pairs andtt are comparable. This means that the direct production of W pairs with jets has a large background from top quarks. This measurement used the full Tevatron run II integrated luminosity of 9.7fb −1 , and identified W's by leptonic decay W + → l + + ν l , giving the final state l + l − + E / T , where the charged lepton is either an electron or a muon.The measured total cross section is σ (pp → W + W − + X) = 14.0 ± 0.6(stat) +1.2 −1.0 (syst) ± 0.8(lumi) pb, consistent with the Standard Model prediction.
The baryon magnetic moments are considered within the framework of the constituent quark model as... more The baryon magnetic moments are considered within the framework of the constituent quark model assuming charge symmetry d ϭϪ u /2. The baryons on the perimeter of the octet have two quarks of the same flavor, and a single quark of different flavor. The effective moments of the single flavor quarks were allowed to vary with I and Y. The resulting formulas predict eight magnetic moments in terms of four parameters. The average discrepancy is ͉͗ fit Ϫ expt ͉͘ϭ0.024 N .
The spin correlation coefficients Cnn and CKP for proton-proton scattering have been measured at ... more The spin correlation coefficients Cnn and CKP for proton-proton scattering have been measured at 400 MeV (60° and 90° in the center-of-mass system) and at 450 MeV (90° in the center-of-mass system) using spark chambers containing carbon plates as the polarization analyzers. At 400 MeV, the results are: Cnn(90°)=0.60+/-0.09, CKP(90°)=0.32+/-0.09, Cnn(60°)=0.82+/-0.47, and CKP(60°)=0.60+/-0.46. At 450 MeV, the results are: Cnn(90°)=0.70+/-0.15
... Precise Measurement of the A° Magnetic Moment L. Schachinger,(a) G. Bunce,(b) PT Cox, T. Devl... more ... Precise Measurement of the A° Magnetic Moment L. Schachinger,(a) G. Bunce,(b) PT Cox, T. Devlin, J. Dworkin, B. Edelman,(C) RT Edwards,(d) R. Handler, K. Heller,(e) R. March, P. Martin,,(f) 0. E. Overseth, L. Pondrom, M. Sheaff, and P. Skubic Physics Department, University ...
W + W − can be produced directly by triple gauge coupling:qq → γ, Z → WW,or as decay products of ... more W + W − can be produced directly by triple gauge coupling:qq → γ, Z → WW,or as decay products of standard model Higgs bosons ortt pairs.The Tevatron search for the decay H → W + W − led to refinement of the techniques for isolating the W pair signal. At √ s = 1.96 TeV the cross sections for direct W pairs andtt are comparable. This means that the direct production of W pairs with jets has a large background from top quarks. This measurement used the full Tevatron run II integrated luminosity of 9.7fb −1 , and identified W's by leptonic decay W + → l + + ν l , giving the final state l + l − + E / T , where the charged lepton is either an electron or a muon.The measured total cross section is σ (pp → W + W − + X) = 14.0 ± 0.6(stat) +1.2 −1.0 (syst) ± 0.8(lumi) pb, consistent with the Standard Model prediction.
The baryon magnetic moments are considered within the framework of the constituent quark model as... more The baryon magnetic moments are considered within the framework of the constituent quark model assuming charge symmetry d ϭϪ u /2. The baryons on the perimeter of the octet have two quarks of the same flavor, and a single quark of different flavor. The effective moments of the single flavor quarks were allowed to vary with I and Y. The resulting formulas predict eight magnetic moments in terms of four parameters. The average discrepancy is ͉͗ fit Ϫ expt ͉͘ϭ0.024 N .
The spin correlation coefficients Cnn and CKP for proton-proton scattering have been measured at ... more The spin correlation coefficients Cnn and CKP for proton-proton scattering have been measured at 400 MeV (60° and 90° in the center-of-mass system) and at 450 MeV (90° in the center-of-mass system) using spark chambers containing carbon plates as the polarization analyzers. At 400 MeV, the results are: Cnn(90°)=0.60+/-0.09, CKP(90°)=0.32+/-0.09, Cnn(60°)=0.82+/-0.47, and CKP(60°)=0.60+/-0.46. At 450 MeV, the results are: Cnn(90°)=0.70+/-0.15
... Precise Measurement of the A° Magnetic Moment L. Schachinger,(a) G. Bunce,(b) PT Cox, T. Devl... more ... Precise Measurement of the A° Magnetic Moment L. Schachinger,(a) G. Bunce,(b) PT Cox, T. Devlin, J. Dworkin, B. Edelman,(C) RT Edwards,(d) R. Handler, K. Heller,(e) R. March, P. Martin,,(f) 0. E. Overseth, L. Pondrom, M. Sheaff, and P. Skubic Physics Department, University ...
Uploads
Papers by Lee Pondrom