Testing the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>-violating MSSM in stau decays at the LHC and ILC

Dreiner, Herbi K.; Kittel, O.; Kulkarni, Suchita; Marold, Anja

doi:10.1103/physrevd.83.095012

Cited by 7 publications

(5 citation statements)

References 102 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[49][50][51][52] and references therein for studies of CP-violating effects at the LHC via rate asymmetries or triple products. While in some cases CP-violating effects occur already at tree-level, it is important to take into account also loop-induced CP-violating effects.…”

Section: Jhep05(2013)053mentioning

confidence: 99%

Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions

Bharucha

Fowler

Moortgat‐Pick

et al. 2013

J. High Energ. Phys.

View full text Add to dashboard Cite

Abstract:We extend the formalism developed in ref. [53] for the renormalisation of the chargino-neutralino sector to the most general case of the MSSM with complex parameters. We show that products of imaginary parts arising from MSSM parameters and from absorptive parts of loop integrals can already contribute to predictions for physical observables at the one-loop level, and demonstrate that the consistent treatment of such contributions gives rise to non-trivial structure, either in the field renormalisation constants or the corrections associated with the external legs of the considered diagrams. We furthermore point out that the phases of the parameters in the chargino-neutralino sector do not need to be renormalised at the one-loop level, and demonstrate that the appropriate choice for the mass parameters used as input for the on-shell conditions depends both on the process and the region of MSSM parameter space under consideration. As an application, we compute the complete one-loop results in the MSSM with complex parameters for the process h a →χ + iχ − j (Higgs-propagator corrections have been incorporated up to the two-loop level), which may be of interest for SUSY Higgs searches at the LHC, and for chargino pair-production at an e + e − Linear Collider, e + e − →χ + iχ − j . We investigate the dependence of the theoretical predictions on the phases of the MSSM parameters, analysing in particular the numerical relevance of the absorptive parts of loop integrals.

show abstract

Section: Jhep05(2013)053mentioning

confidence: 99%

Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions

Bharucha

Fowler

Moortgat‐Pick

et al. 2013

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…Thus, triple product asymmetries have been proposed in many theoretical papers. For the Large Hadron Collider (LHC), triple product asymmetries have been studied for the decays of neutralinos [22][23][24], stops [13,[25][26][27], sbottoms [28,29], and staus [30]. In a Monte Carlo (MC) analysis for stop decays [26,27], it could be shown that the decay chain can be reconstructed and asymmetries be measured at a 3σ level for luminosities of the order of 300 fb −1 .…”

Section: Introductionmentioning

confidence: 99%

Measurement of CP asymmetries in neutralino production at the ILC

et al. 2012

View full text Add to dashboard Cite

show abstract

“…However, studies have been completed to measure the absolute value of A t and are expected to be accurate to within 10% [30,31]. Also, there is the potential to study the CP properties of other 3rd generation trilinear couplings, namely those of theτ sector, φ Aτ [32,33]. In addition, these studies may also be applicable to the LHC if tau polarisation can be probed in the final state [34].…”

Section: Introductionmentioning

confidence: 99%

Momentum reconstruction at the LHC for probingCPviolation in the stop sector

2011

View full text Add to dashboard Cite

We study the potential to observe CP-violating effects in supersymmetrict 1 -cascade decay chains at the LHC. Asymmetries composed of triple products of momenta of the final state particles are sensitive to CP-violating effects. Due to large boosts that dilute the asymmetries, these can be difficult to observe. If all particle masses in a cascade decay are known, it may be possible to reconstruct all momenta in the decay chains on an event-by-event basis even when we have missing momentum due to a stable lightest supersymmetric particle. After the reconstruction, the non-diluted CP-violating signal can be recovered and gets significantly enhanced so that an observation may become feasible. A fully hadronic study has been completed to define the areas of the mSUGRA parameter space that may yield a 3-σ observation with 500 fb −1 at the LHC.

show abstract

Testing theCP-violating MSSM in stau decays at the LHC and ILC

Cited by 7 publications

References 102 publications

Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions

Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions

Measurement of CP asymmetries in neutralino production at the ILC

Momentum reconstruction at the LHC for probingCPviolation in the stop sector

Contact Info

Product

Resources

About