343 citations · 2.6k across the 53 of their papers we have counts for
25 papers · 1 filter
Theoretical underpinnings of CP-Violation at the High-energy Frontier
Shaouly Bar-Shalom, Amarjit Soni, Jose Wudka
We present a general analysis for the discovery potential of CP-violation (CPV) searches in scattering processes at TeV-scale colliders in an effective field theory framework, usin…
Rare K decays off and on the lattice
Stefan Schacht, Amarjit Soni
The importance of rare decays especially in the context of a kaon unitarity triangle (KUT) is emphasized. The decay is theoretically very clean but experi…
Muon g-2 and lepton flavor violation in a two Higgs doublets model for the fourth generation
Shaouly Bar-Shalom, Soumitra Nandi, Amarjit Soni
In the minimal Standard Model (SM) with four generations (the so called SM4) and in "standard" two Higgs doublets model (2HDM) setups, e.g., the type II 2HDM with four fermion gene…
Possible evidence for the breakdown of the CKM-paradigm of CP-violation
E. Lunghi, A. Soni
Using primarily experimental inputs for S(B -> psi Ks), Delta M_Bs, Delta M_Bd, BR(B -> tau nu) and epsilon_K along with necessary inputs from the lattice, we find that the measure…
B, D and K decays
G. Buchalla, T. K. Komatsubara, F. Muheim +124
With the advent of the LHC, we will be able to probe New Physics (NP) up to energy scales almost one order of magnitude larger than it has been possible with present accelerator fa…
Vector form factor in K_l3 semileptonic decay with two flavors of dynamical domain-wall quarks
C. Dawson, T. Izubuchi, T. Kaneko +2
We calculate the vector form factor in K \to πl νsemileptonic decays at zero momentum transfer f_+(0) from numerical simulations of two-flavor QCD on the lattice. Our simulations a…
Semi-inclusive hadronic B decays as null tests of the Standard Model
A. Soni, J. Zupan
We propose a new set of observables that can be used as experimental null tests of the Standard Model in charged and neutral B decays. The CP asymmetries in hadronic decays of char…
Seesaw induced electroweak scale, the hierarchy problem and sub-eV neutrino masses
David Atwood, Shaouly Bar-Shalom, Amarjit Soni
We describe a model for the scalar sector where all interactions occur either at an ultra-high scale L_U ~ 10^{16}-10^{19} GeV or at an intermediate scale L_I ~ 10^{9}-10^{11} GeV.…
R-parity violation and uses of the rare decay sneutrino-->gamma+gamma in hadron and photon colliders
S. Bar-Shalom, G. Eilam, A. Soni +1
We consider implications of the loop process sneutrino -> gamma gamma in the MSSM with R-parity violation for future experiments, where the sneutrino is produced as the only supers…
R-parity violation, sneutrino mixing phenomena and CP-violation in p \bar p -> sneutrino -> l^+ l^- + X
S. Bar-Shalom, G. Eilam, A. Soni
The sneutrino resonance reactions p \bar p -> sneutrino -> l^+ l^- +X, for l=e,μ,τ, in the MSSM without R-parity are considered. We perform a cross-section analysis and show that p…
R-parity violation and CP-violating and CP-conserving spin asymmetries in l^+ l^- -> sneutrino -> tau^+ tau^-: probing sneutrino mixing at LEP2, NLC and mu^+mu^- colliders
S. Bar-Shalom, G. Eilam, A. Soni
We consider the sneutrino resonance reaction l^+ l^- -> sneutrino -> tau^+ tau^- in the MSSM without R-parity. We introduce new CP-violating and CP-conserving tau-spin asymmetries…
CP Violation In Single Top Production And Decay Via p p-bar -> t b-bar +X -> W^+ b b-bar +X Within The MSSM: A Possible Application For Measuring \arg(A_t) At Hadron Colliders
S. Bar-Shalom, D. Atwood, A. Soni
CP-nonconserving effects in the reaction p p-bar -> t b-bar +X -> W^+ b b-bar +X, driven by the supersymmetric CP-odd phase of the stop trilinear soft breaking term, \arg(A_t), are…
Two Higgs Doublets Models and CP Violating Higgs Exchange in e+ e- -> t bar-t Z
S. Bar-Shalom, D. Atwood, A. Soni
Appreciable CP Asymmetries (~ 10%) can arise in the reaction e+ e- -> t bar-t Z already at TREE-LEVEL in models with two Higgs doublets. For a neutral Higgs particle, h, with a mas…
Probing the Flavor-Changing tc vertex via Tree-Level Processes: e+e- -> t bar-c nu_e bar-nu_e, t bar-c e+ e- and t -> c W+ W-
S. Bar-Shalom, G. Eilam, A. Soni +1
The reactions e+e- -> t bar-c nu_e bar-nu_e, t bar-c e+ e- are very sensitive probes of the flavor-changing-scalar couplings which can occur in a model with one extra Higgs doublet…
Color-Octet Contribution and Direct CP Violation in
Xiao-Gang He, A. Soni
We study color-octet contribution to . When this contribution is included, the theoretical predictions for the branching ratios become in much better agree…
and in the Two Higgs Doublet Model with Flavor Changing Neutral Currents
David Atwood, Laura Reina, Amarjit Soni
A study of and is presented in the context of a Two Higgs Doublet Model (2HDM) with flavor changing scalar currents (FCSC). Implications of the model for the -parame…
Large Tree Level CP Violation in in The Two Higgs Doublet Model
S. Bar-Shalom, D. Atwood, G. Eilam +2
We find a large CP violation effect within the Two-Higgs-Doublet-Model for the reaction at future linear colliders. The CP-asymmetry arises already at the t…
Probing flavor changing top-charm-scalar interactions in collisions
David Atwood, Laura Reina, Amarjit Soni
Due to the very large mass of the top-quark, probing the flavor changing top-charm-scalar vertex is clearly very important. Fortunately the largeness of endows a unique signa…
Neutral Higgs CP Violation at colliders
David Atwood, Amarjit Soni
CP violating asymmetries in both the production and the decays of -channel neutral Higgs bosons at colliders can be large. If the CP violation occurs in the muon-Higgs…
Status and prospect for determining , , on the lattice
The MILC Collaboration, C. Bernard, T. Blum +12
Preliminary results from the MILC collaboration for , , , and their ratios are presented. We compute in the quenched approximation at , 6.0 and…
CP Nonconservation in
Shaouly Bar-Shalom, David Atwood, Gad Eilam +1
CP violation effects in are examined. CP-odd, -odd and -even observables can both be used to extract information on the real and imaginary parts of…
Feasibility of Extracting V_td from Radiative B(B_s) Decays
D. Atwood, B. Blok, A. Soni
We use existing measurements of and , coupled with flavor independence of QCD, and with vector meson dominance to show that long distance contr…
CP Violation in
D. Atwood, A. Soni
We consider CP violating effects in decays of the type where are the and resonances each decaying to the common final state via $a…
Probing CP Violation Via Higgs Decays to Four Leptons
A. Soni, R. M. Xu
Since decays to four leptons is widely considered a promising way to search for the Higgs particle, we show how the same final state can also be used to search for signals of CP no…