The Physics Case for Polarised Proton-Nucleon Scattering at HERA
نویسنده
چکیده
The physics case for a possible fixed target polarized nucleon-nucleon collision experiment at HERA is described. The experiment named HERA– ~ N could be realized using an internal polarized gas target in the HERA polarized/unpolarized proton beam. A wide spectrum of nucleon spin structure problems could be investigated and the experiment would constitute a fixed target complement to the RHIC spin physics program with competitive statistical accuracy.
منابع مشابه
ar X iv : h ep - p h / 01 12 33 3 v 1 2 7 D ec 2 00 1 FUTURE LOW X PHYSICS AND FACILITIES
A brief overview is given on the physics and future lepton-nucleon collider facilities to explore the domain of high parton densities at low Bjorken x, with HERA, the electron-ion collider (EIC) and with THERA-in ep, polarised − → e − → N and eA mode. The only existing lepton-nucleon collider which accesses the region of low Bjorken x is HERA. During 2001 the detectors were upgraded and the mac...
متن کاملar X iv : h ep - p h / 01 12 33 3 v 2 5 J an 2 00 2 FUTURE LOW X PHYSICS AND FACILITIES
A brief overview is given on the physics and future lepton-nucleon collider facilities to explore the domain of high parton densities at low Bjorken x, with HERA, the electron-ion collider (EIC) and with THERA-in ep, polarised − → e − → N and eA mode. The only existing lepton-nucleon collider which accesses the region of low Bjorken x is HERA. During 2001 the detectors were upgraded and the mac...
متن کاملPolarised Structure Functions and Quark Distributions at Hera
In 1995, the HERMES experiment 1],,2] at HERA/DESY started its extensive program to study the spin structure of the nucleon through deep inelastic scattering (DIS) of longitudinally polarised positrons oo polarised ? ! H; ? ! D and 3 ? ! He targets. Inclusive polarised DIS measurements aim at a precise determination of the spin structure functions g 1 and g 2 of the proton and the neutron, usin...
متن کاملStrange Form Factors in Neutrino Scattering
The determination of the strange quark contribution to the nucleonic axial and vector weak currents has raised large and continuous interest in theoretical and experimental physics, especially after the measurements of the polarised structure function g 1 of the proton, which indicated a non–zero contribution of the strange quark to the proton spin. In recent years, intermediate energy physics ...
متن کاملSingle Spin Asymmetries on a Transversely Polarised Proton Target at Compass
COMPASS is a running fixed-target experiment at the CERN SPS with a rich physics program focused on nucleon spin structure and on hadron spectroscopy. One of the main goals of the spin program is the measurement of the transverse spin effects in semi-inclusive DIS off transversely polarised nucleons. In the years 2002, 2003 and 2004 data have been taken using a 160 GeV /c naturally polarised µ ...
متن کامل