Jets. Kinematics, and Other variables A Tutorial for Physics With p-p(LHCCern) and p-p(Tevatron/FNAL Experiments Drew baden University of Maryland World Scientific Int JMod. Phys. A13: 1817-1845 1998 Singh .Fenyi 13Jun2007 Tsinghua University
13-Jun-2007 Tsinghua University 1 Jets, Kinematics, and Other Variables A Tutorial for Physics With p-p (LHC/Cern) and p-p (Tevatron/FNAL) Experiments Drew Baden University of Maryland World Scientific Int.J.Mod.Phys.A13:1817-1845,1998
Coordinates X Detector Proton beam direction Z Protdn or anti-profon beam direction 13Jun2007 Tsinghua University 2
13-Jun-2007 Tsinghua University 2 Coordinates x y Proton beam direction z Proton or anti-proton beam direction q Detector f r
Nucleon-nucleon Scattering Elastic scattering Forward-forward scattering, no disassociation(protons stay protons) b>>2 13Jun2007 Tsinghua University
13-Jun-2007 Tsinghua University 3 Nucleon-nucleon Scattering b >> 2 rp Elastic scattering Forward-forward scattering, no disassociation (protons stay protons)
Single-diffractive scattering One of the 2 nucleons disassociates into a spray of particles Mostly I and T particles Mostly in the forward direction following the parent nucleons momenum b~2 13Jun2007 Tsinghua University
13-Jun-2007 Tsinghua University 4 Single-diffractive scattering One of the 2 nucleons disassociates into a spray of particles – Mostly p± and p 0 particles – Mostly in the forward direction following the parent nucleon’s momenum b ~ 2 rp
Double-diffractive scattering Active detector b< r Active detector
13-Jun-2007 Tsinghua University 5 Double-diffractive scattering Both nucleons break up – Resultant spray of particles is in the forward direction b < rp Active detector Active detector