Download or read book Diffractive Z/?* {u2192} ?+?- Boson Production in Proton - Antiproton Collisions At{u221A}s written by and published by . This book was released on 2007 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the inclusive diffractive Z → ?+?- cross section with gap requirement for M?? > 40 GeV at √s = 1.96 TeV and fraction of Z bosons produced diffractively with gap requirement from Z inclusive production are presented. The measurements are performed using a data sample corresponding to an integrated luminosity of 820 pb-1, collected with the D0 detector at the Tevatron, between 2002 to 2005. A total of 39945 di-muons events are selected and final results of: ?$gaptop{Diff}$ x Br(Z/?* → ?+?-) = 4.09 ± 0.64(stat.) ± 0.88(syst.) ± 0.27(lumi.) pb and, R$gaptop{Diff}$ = 1.92 ± 0.30(stat.) ± 0.41(syst.) ± 0.12(lumi) % are obtained. In addition, d?/d? and d?/dy distributions are presented and they are compared with diffractive montecarlo (POMWIG). A reasonable agreement is obtained in this comparation. Finally, comparison of fraction of Z bosons produced diffractively with gap requirement (gap fraction) as measured with D0 during Run I of the Tevatron is compared. A good agreement is found for gap fraction results.