A CP sensitive asymmetry in the three-body decay

Bartl, A.; Kernreiter, T.; Porod, W.

doi:10.1016/s0370-2693(02)01953-6

Cited by 21 publications

(20 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the LHC, CP-odd triple product asymmetries have been studied in the decays of third generation squarks [34][35][36][37], and three-body decays of neutralinos which originate from squarks [37][38][39]. Since triple products are not boost invariant, compared to epsilon products, some of these studies have included boost effects at the LHC [36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Normal tau polarization as a sensitive probe ofCPviolation in chargino decay

Dreiner¹,

Kittel

Marold³

2010

Phys. Rev. D

View full text Add to dashboard Cite

CP violation in the spin-spin correlations in chargino production and subsequent two-body decay into a tau and a tau-sneutrino is studied at the ILC. From the normal polarisation of the tau, an asymmetry is defined to test the CP-violating phase of the higgsino mass parameter µ. Asymmetries of more than ±70% are obtained, also in scenarios with heavy first and second generation sfermions. Bounds on the statistical significances of the CP asymmetries are estimated. As a result, the normal tau polarisation in the chargino decay is one of the most sensitive probes to constrain or measure the phase ϕµ at the ILC, motivating further detailed experimental studies.

show abstract

Section: Introductionmentioning

confidence: 99%

Normal tau polarization as a sensitive probe ofCPviolation in chargino decay

Dreiner¹,

Kittel

Marold³

2010

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…A CP sensitive asymmetry in the 3-body decayt 1 ! b involving the transverse polarization of the lepton has been proposed in [9].…”

Section: Introductionmentioning

confidence: 99%

Triple product correlations in top squark decays

et al. 2004

Self Cite

View full text Add to dashboard Cite

We propose several T-odd asymmetries in the decay chains of the top squarks $\tilde t_m \to t \tilde \chi^0_k$ and $t\to bW^+\to bl\nu$ and $\tilde\chi^0_k \to l^\pm\tilde l_n^\mp \to l^\pm l^\mp\tilde\chi^0_1$, for $l =e,\mu,\tau$. We calculate the asymmetries within the Minimal Supersymmetric Standard Model with complex parameters $M_1$, $\mu$ and $A_t$. We give the analytic formulae for the decay distributions. We present numerical results for the asymmetries and estimate the event rates necessary to observe them. The largest T-odd asymmetry can be as large as 40%.Comment: 26 pages, 5 figures; misprints corrected; reference adde

show abstract

“…T-odd correlation vanishes at tree level in the SM [11], but the SUSY theory gives rise to CP-odd(T-odd) observables already at tree level [12,13,14]. T-odd asymmetry value for SU(2) L ×SU(2) R ×U(1) model and scalar models was estimated in [15].…”

Section: Pos(kaon)029mentioning

confidence: 99%

Study of K^(-) into e,nu,pi^(0),gamma decay with ISTRA+ setup

Болотов¹

2008

Proceedings of Kaon International Conference — PoS(KAON)

View full text Add to dashboard Cite

PoS(KAON)029 Study ofResults of the study of the K − → π 0 e − νγ decay at ISTRA+ setup are presented. 4476 events of this decay have been observed. The ratio of branching ratios (R), R = Br(K − →π 0 e − ν e γ) Br(K − →π 0 e − ν e ) = (1.81 ± 0.03(stat.) ± 0.07(syst.)) × 10 −2 , has been obtained for E * γ > 10 MeV and θ * eγ > 10 • . For comparison with previous experiments, the branching ratio with cuts E * γ > 10 MeV, 0.6 < cosθ * eγ < 0.9 is calculated, R = Br(K − →π 0 e − ν e γ) Br(K − →π 0 e − ν e ) = (0.47 ± 0.02(stat.) ± 0.03(syst.)) × 10 −2 .For the cuts E * (γ) > 30 MeV and θ * eγ > 20 • , used in most theoretical papers, we have obtained Br(K − → π 0 e − ν e γ) = (3.13 ± 0.09 ± 0.14) × 10 −4 . For the asymmetry A ξ we get A ξ = −0.015 ± 0.021. At present it is the best estimate of this asymmetry.

show abstract

A CP sensitive asymmetry in the three-body decay

Cited by 21 publications

References 47 publications

Normal tau polarization as a sensitive probe ofCPviolation in chargino decay

Normal tau polarization as a sensitive probe ofCPviolation in chargino decay

Triple product correlations in top squark decays

Study of K^(-) into e,nu,pi^(0),gamma decay with ISTRA+ setup

Contact Info

Product

Resources

About