Difference between revisions of "Delta R"

From Particle Wiki
Jump to: navigation, search
(Redirected page to Angular distance)
 
Line 1: Line 1:
{{DISPLAYTITLE:ΔR}}
+
#REDIRECT [[Angular distance]]
 
+
'''ΔR''' ('''delta R''') is the '''angular distance''' (or '''angular separation''') between two [[Object|objects]]. It tells how much two objects are moving in the same direction.
+
 
+
== At hadron colliders ==
+
At [[Hadron collider|hadron colliders]], the angular distance is usually defined in a way that is [[Longitudinal boost invariance|invariant under longitudinal boosts]]. This is achieved by using the [[pseudorapidity]] difference of the objects rather than an actual angle. In the [[transverse plane]], the momentum of the [[initial state]] is ([[Primordial kt|essentially]]) zero, so the [[azimuthal angle]] can be used directly.
+
 
+
 
+
== At lepton colliders ==
+
At [[Lepton collider|lepton colliders]], the vector angle between the object momenta may be used directly.
+

Latest revision as of 06:35, 11 April 2016

Redirect to: