Ultra-Peripheral Collisions in CMS
نویسنده
چکیده
Coherent peripheral collisions of atomic nuclei involve electromagnetic or long range hadronic interactions at impact parameters, where both nuclei survive intact. Recently such ultra-peripheral collisions were observed at RHIC. The effect of the electromagnetic field can be interpreted as a photon-photon collision with an effective center of mass energy up to a few GeV at RHIC. At the Large Hadron Collider the effective center of mass energy will be increased by more than an order of magnitude. This opens new opportunities, ranging from the study of non-perturbative QCD to the search for new physics.
منابع مشابه
Ultra-peripheral Heavy Ion Collisions at Star
Ultra-peripheral heavy ion collisions involve long range electromagnetic interactions at impact parameters larger than twice the nuclear radius, where the strong nucleon-nuecleon interactions are uneffective. We present recent results from the STAR collaboration on these ultra-peripheral interactions likes incoherent 0 ρ production in deuteron-gold collisions and interferometry in gold-gold col...
متن کاملUltra-peripheral collisions of heavy ions at RHIC and the LHC
This paper deals with so-called Ultra-Peripheral Collisions (UPCs) of heavy ions[ 1, 2]. These can be defined as collisions in which no hadronic interactions occur because of the large spatial separation between the projectile and target. The interactions are instead mediated by the electromagnetic field. Two types of ultra-peripheral collisions can be distinguished: purely electro-magnetic int...
متن کاملPhotoproduction in Ultra-Peripheral Heavy-Ion Collisions
The strong electromagnetic fields present in ultra-peripheral collisions of heavy-ions offer a possibility to study two-photon and photonuclear collisions complementary to similar studies with lepton beams but over an increased photon energy range. This presentation[1] will give an overview of photoproduction at hadron colliders.
متن کاملPhotoproduction in Ultra-Peripheral Heavy Ion Collisions at STAR
We present recent STAR results on photoproduction in ultra-peripheral relativistic heavy ion collisions. In these collisions the impact parameter of the beam particles is larger than the sum of their nuclear radii, so that they interact via their long-range Coulomb fields. STAR has measured the production of ρ(770) mesons in exclusive reactions as well as in processes with mutual nuclear excita...
متن کاملPhoton interactions in ultra-peripheral heavy-ion collisions in the ATLAS detector at the LHC
Two analyses involving photon interactions in ultra-peripheral lead-lead collisions in the ATLAS detector at the LHC are described, namely the study of dijet production in photo-nuclear ultra-peripheral collisions and a measurement of light-by-light scattering. The first, is an important way to probe and constrain nuclear parton distribution functions, which are known to exhibit suppression at ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001