Workbook

51
E-672 (Zieminski) StudyofHadronic Final States
inAssociation with High Mass Dimuons
Fermilab, IHEP/ Serpukhov (Russia), Illinois / Chicago,
Indiana, Louisville, Michigan/Flint
IStatus: Data AnalysisI
The aim of the E-672 experiment is to study hadronic processes yielding
vector mesons (p/ro, , J/"" ",')and high mass· dimuon pairs (the trigger) and
associated particles. The experiment shares the MW beam line, magnetic
spectrometer and calorimetry with the E-706 experiment. The dimuon detector
is located downstream of the forward hadronic calorimeter and consists of a
toroid magnet, six PWC's with three or four planes each, two scintillator
hodoscopes used in the dimuon pretrigger and pretrigger and trigger
processors.
E-672 IS an open geometry dimuon experiment. The geometrical
acceptance for dimuon pairs produced in hA collisions at 530 GeV/c is
approximately 20% and has a maximum for Feynman x = 0.25. The physics
goals, which all are related to experimental tests of Quantum
Chromodynamics, include:
(a) Production of X states by observing their radiative decays into J/",y with
gammas either converting into e+e- pairs inside the target or observed in
the LAC;
(b) Production of b-quarks observed via their decays to J/", (inclusive and
exclusive modes: J/",K, J/",K* and J/",KO);
(c) Production of b-quarks observed via double semileptonic BB decays into
like-sign dimuons;
(d) General properties of the production of vector mesons (p/ro, , J/"" and ",')
and Drell-Yan pairs
- total and differential cross sections
- gluon structure function of the incident hadron
- production of associated charged and neutral particles
- dependence on the inelasticity on the collision
- the A-dependence of total and differential cross sections
(e) J/", + nn spectroscopy (same for