Weighing wimps with kinks at colliders: invisible particle mass measurements from endpoints
By Alan J. Barr, B. Gripaios, Christopher Gorham Lester. 2007
151 citations recorded by the source corpus.
We consider the application of endpoint techniques to the problem of mass determination for new particles produced at a hadron collider, where these particles decay to an invisible particle of unknown mass and one or more visible particles of known mass. We also consider decays of these types for pair-produced particles and in each case consider situations both with and without initial state radiation. We prove that, in most (but not all) cases, the endpoint of an appropriate transverse mass observable, considered as a function of the unknown mass of the invisible particle, has a kink at the true value of the invisible particle mass. The co-ordinates of the kink yield the masses of the decaying particle and the invisible particle. We discuss the prospects for implementing this method at the LHC.
Subfields: Condensed Matter Physics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/b02d3c874ad83c4780e62622760601a02e70fefb
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In Condensed Matter Physics
In Nuclear and High Energy Physics
- Johan Alwall
- Atlas Collaboration
- Fabio Maltoni
- Kyoungchul Kong
- S. Visscher
- Alan J. Barr
- Konstantin T. Matchev
- Myeonghun Park
Citations in the corpus
- QCD Radiation in the Production of Heavy Colored Particles at the LHC (2008, background): “, [28, 29]) and combined information on kinematics, cross sections and branching ratios [30, 31], although especially the latter tend to be quite model dependent.”
- A review of the mass measurement techniques proposed for the Large Hadron Collider (2010, background): “Pairs of two-body decays in which the sum of the parents’ transverse momenta is zero, and which have fixed mA will not produce kinks because the kinematics are so constrained that the gradients at χ = m/ C± have to be equal [139].”
- Using subsystem MT2 for complete mass determinations in decay chains with missing energy at hadron colliders (2008, background): “[31], where this kink was first discovered.”