A T-odd observable sensitive to CP violating phases in squark decay
@article{Langacker2007ATO, title={A T-odd observable sensitive to CP violating phases in squark decay}, author={Paul Langacker and Gil Paz and Lian-tao Wang and Itay Yavin}, journal={arXiv: High Energy Physics - Phenomenology}, year={2007} }
We present a new observable sensitive to a certain combination of CP violating phases in supersymmetric extensions of the Standard Model, viz. a triple product of momenta in the cascade decay of a heavy squark via an on-shell neutralino and off-shell slepton. We investigate the regions of parameter space in which the signal is strong enough to be detectable at the LHC with $\sim \bigl(10^2-10^3\bigr)/\sin^2(2\Delta\phi)$ identified events, where $\Delta\phi$ is a certain combination of phases…
23 Citations
CP asymmetries in the supersymmetric trilepton signal at the LHC
- Physics
- 2012
In the CP-violating Minimal Supersymmetric Standard Model, we study the production of a neutralino–chargino pair at the LHC. For their decays into three leptons, we analyze CP asymmetries which are…
SUSY CP phases and asymmetries at colliders
- Physics
- 2009
In the Minimal Supersymmetric Standard Model, physical phases of complex parameters lead to CP violation. We show how triple products of particle momenta or spins can be used to construct…
Probing CP violation with and without momentum reconstruction at the LHC
- Physics
- 2009
We study the potential to observe CP-violating effects in SUSY cascade decay chains at the LHC. We consider squark and gluino production followed by subsequent decays into neutralinos with a…
CP violation in sbottom decays
- Physics
- 2010
We study CP asymmetries in two-body decays of bottom squarks into charginos and top quarks. These asymmetries probe the SUSY CP phases of the sbottom and the chargino sector in the Minimal…
Momentum asymmetries as CP violating observables
- Physics
- 2012
A bstractThree body decays can exhibit CP violation that arises from interfering diagrams with different orderings of the final state particles. We construct several momentum asymmetry observables…
A mini review on CP-violating minimal supersymmetric Standard Model Higgs
- Physics
- 2016
We discuss the present status of the Higgs sector of the CP-violating minimal supersymmetric Standard Model (CPVMSSM). In the Standard Model (SM) of particle physics, the only source of CP violation…
Momentum reconstruction at the LHC for probing CP-violation in the stop sector
- Physics
- 2011
We study the potential to observe CP-violating effects in SUSY cascade decay chains at the LHC. Asymmetries composed by triple products of momenta of the final state particles are sensitive to…
A new CP violating observable for the LHC
- Physics
- 2011
We study a new type of CP violating observable that arises in three body decays that are dominated by an intermediate resonance. If two interfering diagrams exist with different orderings of final…
CP-violation in cascade decays at the LHC
- Physics
- 2014
We study the potential to observe CP-violating effects in various supersymmetric cascade
decay chains at the LHC. Asymmetries composed by triple products of
momenta of the final state particles are…
Refining the predictions of supersymmetric CP-violating models: A top-down approach
- Physics
- 2008
We explore in detail the consequences of the CP-violating phases residing in the supersymmetric and soft SUSY breaking parameters in the approximation that family flavour mixings are ignored. We…
References
SHOWING 1-10 OF 46 REFERENCES
New CP-odd Observable in H → t ¯
- Physics
- 2008
We study a CP-violating triple product correlation that occurs in the decay of a neutral Higgs boson into tpairs when the Higgs boson does not have a definite CP nature. We consider the H → tdecay…
Triple product correlations in top squark decays
- Mathematics, Physics
- 2004
We propose several T-odd asymmetries in the decay chains of the top squarksm → t˜ � 0 and t → bW + → bland ˜ � 0 → l ±˜ ∓ n → l ± l ∓ ˜ � 0 , for l = e,µ,�. We calculate the asymmetries within the…
CP violation in the 3 jet and 4 jet decays of the Z boson at GigaZ
- Physics
- 2003
Abstract.We review CP-violating effects in $Z \rightarrow 3$ jet and $Z \rightarrow$ 4 jet decays, assuming the presence of CP-violating effective $Z b \bar{b} G$ and $Z b \bar{b} G G$ couplings.…
CP violation in supersymmetric U ( 1 ) ′ models
- Physics
- 2003
The supersymmetric CP problem is studied within superstring-motivated extensions of the MSSM with an additional U(1) ′ gauge symmetry broken at the TeV scale. This class of models offers an…
CP-violating phases in supersymmetry, electric dipole moments, and linear colliders
- Materials Science, Physics
- 2001
We reexamine large CP-violating phases in the general minimal supersymmetric standard model, as well as more restricted models. We perform a detailed scan over parameter space to find solutions which…