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Reconstructing particle masses from pairs of decay chains · Around

2010

Reconstructing particle masses from pairs of decay chains

Nojiri, Mihoko M., Sakurai, Kazuki, Webber, Bryan R.

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A method is proposed for determining the masses of the new particles N,X,Y,Z in collider events containing a pair of effectively identical decay chains Z to Y+jet, Y to X+l_1, X to N+l_2, where l_1, l_2 are opposite-sign same-flavour charged leptons and N is invisible.

By first determining the upper edge of the dilepton invariant mass spectrum, we reduce the problem to a curve for each event in the 3-dimensional space of mass-squared differences.
The region through which most curves pass then determines the unknown masses.
A statistical approach is applied to take account of mismeasurement of jet and missing momenta.

Built on

G. Corcella et al
2001
Earlier work this paper cites.
B. C. Allanach et al
2002
Earlier work this paper cites.
S. Moretti, K. Odagiri, P. Richardson, M. H. Seymour and B. R. Webber, “Implementation of supersymmetric processes in the HERWIG event generator,” JHEP 0204
2002
Earlier work this paper cites.

Similar

K. Kawagoe, M. M. Nojiri and G. Polesello, “A new SUSY mass reconstruction method at the CERN LHC,” Phys. Rev. D 71
2005
Cited alongside, same era.
G. L. Bayatian et al
Original
2007
Cited alongside, same era.
H. C. Cheng, D. Engelhardt, J. F. Gunion, Z. Han and B. McElrath, “Accurate Mass Determinations in Decay Chains with Missing Energy,” Phys. Rev. Lett. 100
Original
2008
Cited alongside, same era.
A. J. Barr and C. G. Lester, “A Review of the Mass Measurement Techniques proposed for the Large Hadron Collider,” arXiv:1004.2732
Original
Cited in the paper.
G. Corcella et al
Cited in the paper.
E. Richter-Was, “AcerDET: A particle level fast simulation and reconstruction package for phenomenological studies on high p(T) physics at LHC,” arXiv:hep-ph/0207355, http://erichter.home.cern.ch/erichter/AcerDET.html
Cited in the paper.

Then

M. M. Nojiri, G. Polesello and D. R. Tovey, “A hybrid method for determining SUSY particle masses at the LHC with fully identified cascade decays,” JHEP 0805
Original
2008
Later among the works it cites.
H. C. Cheng, J. F. Gunion, Z. Han and B. McElrath, “Accurate Mass Determinations in Decay Chains with Missing Energy: II,” Phys. Rev. D 80
Original
2009
Later among the works it cites.
B. Webber, “Mass determination in sequential particle decay chains,” JHEP 0909
Original
2009
Later among the works it cites.

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