output
19912026
Showing 2004 · hep-phShow all

17 papers · 2 filters

hep-ph2004★ 100 cited

The B -> pi K Puzzle and New Physics

Seungwon Baek, Philippe Hamel, David London +2

The present B -> pi K data is studied in the context of the standard model (SM) and with new physics (NP). We confirm that the SM has difficulties explaining the B -> pi K measurem…

hep-ph2004★ 6 cited

A Measurement of gamma from the Decays Bd(t) -> D(*)+ D(*)- and Bd -> Ds(*)+ D(*)-

Justin Albert, Alakabha Datta, David London

Recently, it was proposed to use measurements of Bd(t) -> D(*)+ D(*)- and Bd -> Ds(*)+ D(*)- decays to measure the CP phase gamma. In this paper, we present the extraction of gamma…

hep-ph2004★ 16 cited

Bd^0(t)->pi^+pi^- and Bs^0(t)-> K^+ K^- Decays: A Tool to Measure New-Physics Parameters

David London, Joaquim Matias, Javier Virto

If physics beyond the standard model is present in B decays, experimental measurements seem to suggest that it principally affects those processes with significant b->s penguin amp…

hep-ph2004

CP Violation in B -> pi K Decays

Maxime Imbeault

I briefly review CP violation in the B system, concentrating on B -> pi K decays. I discuss how to deal with electroweak-penguin contributions to these decays using flavour SU(3).…

hep-ph2004

New Physics Signals through CP Violation in B -> rho,pi

Veronique Page

We describe here a method for detecting physics beyond the standard model via CP violation in B->rho,pi decays. Using a Dalitz-plot analysis to obtain alpha, along with an analytic…

hep-ph2004★ 42 cited

Methods for Measuring New-Physics Parameters in B Decays

Alakabha Datta, Maxime Imbeault, David London +3

Recently, it was argued that new-physics (NP) effects in B decays can be approximately parametrized in terms of a few quantities. As a result, CP violation in the system allows…

hep-ph2004★ 3 cited

CP Violation in the B System: Measuring New-Physics Parameters

David London

I review CP violation in the standard model (SM). I also describe the predictions for CP violation in the B system, along with signals for physics beyond the SM. I stress the numer…

hep-ph2004★ 68 cited

Measuring New-Physics Parameters in B Penguin Decays

Alakabha Datta, David London

We examine new-physics (NP) effects in B decays with large b -> s penguin amplitudes. Decays involving b -> d penguins are assumed to be unaffected. We consider a model-independent…

hep-ph2004★ 15 cited

Testing the Standard Model with Bs-> K^+ K^- Decays

David London, Joaquim Matias

In the limit of flavor SU(3) symmetry, the amplitudes for Bd->pi^+π^- and Bs-> K^+ K^- are related to one another. Taking the values of the weak phases beta and gamma from independ…

hep-ph2004★ 8 cited

Obtaining CKM Phase Information from B Penguin Decays

Alakabha Datta, David London

We discuss a method for extracting CP phases from pairs of B decays which are related by flavor SU(3). One decay (B0 -> M1 M2) receives a significant bbar -> dbar penguin contribut…

hep-ph2004★ 13 cited

Dynamical CP Violation in the Early Universe

K. R. S. Balaji, Tirthabir Biswas, Robert H. Brandenberger +1

Following earlier ideas of Dolgov, we show that the asymmetrical dynamical evolution of fields in the early Universe provides a new source for CP violation. This can lead to baryog…

hep-ph2004★ 160 cited

Prospects for the Search for a Standard Model Higgs Boson in ATLAS using Vector Boson Fusion

S. Asai, G. Azuelos, C. Buttar +14

The potential for the discovery of a Standard Model Higgs boson in the mass range m_H < 2 m_Z in the vector boson fusion mode has been studied for the ATLAS experiment at the LHC.…

hep-ph2004★ 29 cited

Bounds on New Physics from B -> V1 V2 Decays

David London, Nita Sinha, Rahul Sinha

We consider the possibility that physics beyond the standard model contributes to the decays B -> V1 V2, where V1 and V2 are vector mesons. We show that a time-dependent angular an…

hep-ph2004

Exploring Little Higgs Models with ATLAS at the LHC

G. Azuelos, K. Benslama, D. Costanzo +8

We discuss possible searches for the new particles predicted by Little Higgs Models at the LHC. By using a simulation of the ATLAS detector, we demonstrate how the predicted quark,…

hep-ph2004★ 37 cited

Phenomenological Constraints on Extra-Dimensional Scalars

G. Azuelos, P. -H. Beauchemin, C. P. Burgess

We examine whether the ATLAS detector has sensitivity to extra-dimensional scalars (as opposed to components of higher-dimensional tensors which look like 4D scalars), in scenarios…

hep-ph2004★ 13 cited

Production of Excited Neutrino at LHC

A. Belyaev, C. Leroy, R. Mehdiyev

We study the potential of the CERN LHC in the search for the single production of excited neutrino through gauge interactions. Subsequent decays of excited neutrino via gauge inter…

hep-ph2004★ 11 cited

Signals from R-parity violating top quark decays at LHC

A. Belyaev, M-H. Genest, C. Leroy +1

We evaluate the potential of the CERN LHC collider to observe rare decays of the top quark in channels involving R-parity violating (RPV) interactions. We stress the importance of…