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We study the potential to observe CP-violating effects in SUSY stop cascade decay chains at the LHC. Asymmetries composed by triple products of momenta of the final state particles are sensitive to CP-violating effects. Due to large boosts…

High Energy Physics - Phenomenology · Physics 2011-07-22 Gudrid Moortgat-Pick , Krzysztof Rolbiecki , Jamie Tattersall

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 CP-violating effects. Due to large boosts that…

High Energy Physics - Phenomenology · Physics 2013-05-29 Jamie Tattersall , Gudrid Moortgat-Pick , Krzysztof Rolbiecki

We discuss the potential to observe effects of CP violation in squark decay chains at the LHC. As the CP-violating observable we use the asymmetry composed by triple products of final state momenta. Extending methods for momentum…

High Energy Physics - Phenomenology · Physics 2015-05-14 G. Moortgat-Pick , K. Rolbiecki , J. Tattersall , P. Wienemann

We discuss the potential of observing effects of CP-violation phases in squark decay chains at the LHC. As the CP-odd observable, we use the asymmetry composed by triple products of final state momenta. There are good prospects of observing…

High Energy Physics - Phenomenology · Physics 2015-05-18 K. Rolbiecki , G. Moortgat-Pick , J. Tattersall , P. Wienemann

We study CP asymmetries in two-body decays of top squarks into neutralinos and sleptons at the LHC. These asymmetries are used to probe the CP phases possibly present in the stop and neutralino sector of the Minimal Supersymmetric Standard…

High Energy Physics - Phenomenology · Physics 2014-11-18 Frank Deppisch , Olaf Kittel

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 asymmetries, that allow us to probe these CP phases.…

High Energy Physics - Phenomenology · Physics 2009-07-22 Olaf Kittel

Three 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 that are accessible in a hadron collider environment…

High Energy Physics - Phenomenology · Physics 2012-10-31 Joshua Berger , Monika Blanke , Yuval Grossman , Shamayita Ray

Selectron decays constitute a source of 100% polarised neutralinos, whose helicity is fixed by the charge and "chirality" of the decaying selectron. In SUSY scenarios where the second neutralino X_2^0 has three-body decays, the cascade…

High Energy Physics - Phenomenology · Physics 2009-11-10 J. A. Aguilar-Saavedra

We study the potential observation at the LHC of CP-violating effects in stop production and subsequent cascade decays, g g -> tilde{t}_i tilde{t}_i, tilde{t}_i -> t tilde{chi}^0_j, tilde{chi}^0_j -> tilde{\chi}^0_1 l^+ l^-, within the…

High Energy Physics - Phenomenology · Physics 2009-04-24 J. Ellis , F. Moortgat , G. Moortgat-Pick , J. M. Smillie , J. Tattersall

We study CP asymmetries in two-body decays of bottom squarks into charginos and tops. These asymmetries probe the SUSY CP phases of the sbottom and the chargino sector in the Minimal Supersymmetric Standard Model. We identify the MSSM…

High Energy Physics - Phenomenology · Physics 2015-03-13 Frank F. Deppisch , Olaf Kittel

Recent studies about the impact of the CP-violating complex parameters in supersymmetry on the decays of third generation squarks and about T-odd asymmetries in neutralino and chargino production and decay are reviewed. The CP-even…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Hesselbach

Recent studies about CP violation in the Minimal Supersymmetric Standard Model (MSSM) with complex parameters are reviewed. In order to unambiguously identify the CP-violating phenomena it is necessary to study CP-odd or T-odd observables.…

High Energy Physics - Phenomenology · Physics 2009-02-16 S. Hesselbach

We review our recent studies on the effects of CP-violating supersymmetric (SUSY) parameters on the phenomenology of neutralinos, charginos and third generation squarks. The CP-even branching ratios of the squarks show a pronounced…

High Energy Physics - Phenomenology · Physics 2015-06-25 A. Bartl , S. Hesselbach

A benchmark CP-violating supersymmetric scenario (known as 'CPX-scenario' in the literature) is studied in the context of the Large Hadron Collider (LHC). It is shown that the LHC, with low to moderate accumulated luminosity, will be able…

High Energy Physics - Phenomenology · Physics 2011-12-13 Priyotosh Bandyopadhyay

In the MSSM with complex parameters, loop corrections to the decay of a stop into a bottom quark and a chargino can lead to a CP violating decay rate asymmetry. We calculate this asymmetry at full one-loop level and perform a detailed…

High Energy Physics - Phenomenology · Physics 2015-05-14 Sebastian M. R. Frank , Helmut Eberl

CP-violating effects in decays of B mesons offer a wide spectrum of probes for testing the phase structure of the quark-flavour sector of the Standard Model. After a brief discussion of the picture emerging from the current LHC data, the…

High Energy Physics - Phenomenology · Physics 2015-06-22 Robert Fleischer

In this thesis we analyze CP violating effects of MSSM phases in production and two-body decays of neutralinos, charginos and sfermions. For different supersymmetric processes we define and calculate CP-odd asymmetries, which base on triple…

High Energy Physics - Phenomenology · Physics 2007-05-23 O. Kittel

In the MSSM with complex parameters, loop corrections to the decay of a stop into a bottom quark and a chargino can lead to a CP violating decay rate asymmetry. We calculate this asymmetry at full one-loop level and perform a detailed…

High Energy Physics - Phenomenology · Physics 2010-12-15 Helmut Eberl , Sebastian M. R. Frank , Walter Majerotto

Current experimental data on the 125 GeV Higgs boson still allow room for large CP violation. The observables usually considered in this context are triple product asymmetries, which require an input of four visible particles after imposing…

High Energy Physics - Phenomenology · Physics 2015-06-19 Yi Chen , Adam Falkowski , Ian Low , Roberto Vega-Morales

We review the information on the CKM matrix elements, unitarity triangle and CP-violating phases $\alpha, \beta$ and $\gamma$ in the standard model which will be measured in the forthcoming experiments at B factories, HERA-B and hadron…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Ali
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