Cp Violation
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. PERSPECTIVAS PARA O DECAIMENTO B+- ->PI+- PI- PI+ NO EXPERIMENTO LHCB / PERSPECTIVE FOR B DECAYS INTO THREE PIONS IN LHCB EXPERIMENT
O experimento LHCb (CERN) tem como um de seus objetivos principais o estudo do fenômeno de Violalção da Simetria Carga-Paridade (CP), que seria uma das condições necessárias para assimetria de matéeria-antimatéria observada no Universo. O LHCb foi especialmente desenhado para coletar eventos com produção de mésons B (que contém o quark b), cujos
Publicado em: 2009
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2. ESTUDO DOS EFEITOS DA INTERAÇÃO NÃO PADRÃO DOS NEUTRINOS COM A MATÉRIA EM EXPERIMENTOS DE OSCILAÇÃO DE NEUTRINOS DE GRANDES COMPRIMENTOS / PROBING OF NON STANDARD NEUTRINOS INTERATION WITH MATTER IN OSCILATION NEUTRINO EXPERIMENTS WITH LONG BASELINE
Em física de neutrinos, quase todos os dados de experimentos importantes podem ser explicados através de oscilação de neutrinos causados por massas e misturas. Porem, existe a possibilidade de que os neutrinos tenham algumas propriedades, além dessas mencionadas, que manifesta alguma física nova ou física além do modelo padrão. Esta nova física pod
Publicado em: 2008
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3. Neutrino physics: the roadmap for precision physics
In the last years, we experienced a complete change of the view of weak interaction physics. Robust results from many experiments as Super-Kamiokande, KamLAND, SNO, K2K, show us that the neutrinos have the remarkable phenomena of oscillations, a quantum interference mechanism that operates to distances as large as 100 km and even bigger distances. From this
Brazilian Journal of Physics. Publicado em: 2006-12
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4. Dark energy in the universe, the irreversibility of time and neutrinos
In this review, I discuss briefly how the presence of a cosmological constant in the Universe may imply a decoherent evolution of quantum matter in it, and as a consequence a fundamental irreversibility of time unrelated in principle to CP properties (Cosmological CPT Violation). In this context, I also discuss recently suggested novel possible contributions
Brazilian Journal of Physics. Publicado em: 2005-06
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5. CP violation prospects at the LHC
In the last few years experiments at B-factories have established CP violation in Bd decays. From 2007 onward new experiments will start to exploit the large cross-section at the LHC to advance the understanding of CP violation by studying unprecedented large samples of all B-meson flavours. After a short revi
Brazilian Journal of Physics. Publicado em: 2004-12
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6. Neutrinos at 1%: a reactor based measurement of theta13
Past studies of neutrinos and the recent results on neutrino mixing have opened up many new possibilities as well as the understanding that neutrino mixing is very different from the better known quark mixing. The last remaining unmeasured component of the neutrino mixing matrix (Ue3) also provides a window to understanding neutrino matter effects, the mass
Brazilian Journal of Physics. Publicado em: 2004-12
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7. CP Violation: Past, Present, and Future
We discuss the history of CP violation and its manifestations in kaon physics, its explanation in terms of phases of the Cabibbo-Kobayashi-Maskawa matrix describing charge-changing weak quark transitions, predictions for experiments involving B mesons, and the light it can shed on physics beyond the Standard Model.
Brazilian Journal of Physics. Publicado em: 2001-06
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8. The search for time-dependent CP-asymmetries in the neutral B-meson system
In this talk I first present an overview of Standard Model predictions for CP violation in the neutral B-meson sector. Then, I present a status report from the experiment at the Stanford Linear Accelerator Center which has been designed especially to measure time-dependent asymmetries whose interpret
Brazilian Journal of Physics. Publicado em: 2000-06
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9. Is the cygnet the quintessential baryon?
The apparently new hadron-like particle ("cygnet") indicated by cosmic ray observations on certain neutron stars is predicted to be a spin 1/2 fermion of magnetic moment and charge 0 and lifetime infinity. This derives from the natural identification of the cygnet with the one hitherto unobserved fundamental fermion of chronometric particle theory, the x or