Difference between revisions of "Secondary vertex"
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A [[secondary vertex]] is a [[Vertex|point in space]] where an [[unstable]] [[particle]] produced in a [[collision]] [[Decay|decays]] to other particles. Experimentally, secondary vertices can only be [[Reconstruction|reconstructed]] for particles that are sufficiently long-lived to travel a [[Detector resolution|resolvable]] distance in the detector before decaying. In addition, the primary particle must decay to at least one [[Electric charge|charged]] particle, in practice often to at least two, so that their [[Track|tracks]] can be reconstructed and the secondary vertex position determined from them. | A [[secondary vertex]] is a [[Vertex|point in space]] where an [[unstable]] [[particle]] produced in a [[collision]] [[Decay|decays]] to other particles. Experimentally, secondary vertices can only be [[Reconstruction|reconstructed]] for particles that are sufficiently long-lived to travel a [[Detector resolution|resolvable]] distance in the detector before decaying. In addition, the primary particle must decay to at least one [[Electric charge|charged]] particle, in practice often to at least two, so that their [[Track|tracks]] can be reconstructed and the secondary vertex position determined from them. | ||
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| + | Secondary vertices play an important role in the identification [[B hadron|B hadrons]] in [[flavour physics]] and [[B-tagging]] applications. | ||
Revision as of 09:45, 19 April 2016
A secondary vertex is a point in space where an unstable particle produced in a collision decays to other particles. Experimentally, secondary vertices can only be reconstructed for particles that are sufficiently long-lived to travel a resolvable distance in the detector before decaying. In addition, the primary particle must decay to at least one charged particle, in practice often to at least two, so that their tracks can be reconstructed and the secondary vertex position determined from them.
Secondary vertices play an important role in the identification B hadrons in flavour physics and B-tagging applications.
