Zhi Hong Zhu

Learn More
DØ has measured the inclusive production cross section of W and Z bosons in a sample of 13 pb −1 of data collected at the Fermilab Tevatron. The cross sections, multiplied by their leptonic branching fractions, for production in p¯ p collisions at √ s = 1.8 TeV are σ W B(W → eν) = 2.36 ± 0.02 ± 0.08 ± 0.13 nb,
We present a measurement of the W boson mass using data collected by the DØ experiment at the Fermilab Tevatron during 1994–1995. We identify W bosons by their decays to eν final states where the electron is detected in a forward calorimeter. We extract the W boson mass, M W , by fitting 3 4 the transverse mass and transverse electron and neutrino momentum(More)
The epithelium and stroma of bovine and human corneas were exposed to both ablative and subablative levels of 193-nm excimer laser radiation and the spectra of the induced fluorescence recorded. Two broad peaks in the emission spectra were observed, at 310 nm and 460 nm, with a difference in the relative height of these peaks between epithelium and stroma.(More)
We report a search for effects of large extra spatial dimensions in pp collisions at a center-of-mass energy of 1.8 TeV with the D0 detector, using events containing a pair of electrons or photons. The data are in good agreement with the expected background and do not exhibit evidence for large extra dimensions. We set the most restrictive lower limits to(More)
We report the femtosecond laser propagation in a hybrid graphene/silicon ridge waveguide with demonstration of the ultra-large Kerr coefficient of graphene. We also fabricated a slot-like graphene/silicon ridge waveguide which can enhance its effective Kerr coefficient 1.5 times compared with the graphene/silicon ridge waveguide. Both(More)
DD has measured the inclusive production cross section of W and Z bosons in a sample of 13 pb ?1 of data collected at the Fermilab Teva-tron. The cross sections, multiplied by their leptonic branching fractions , for production in p p collisions at p s = 1.8 TeV are W B(W ! ee) = nb, where the rst uncertainty is statistical and the second systematic; the(More)
  • 1