3,648 research outputs found
Heavy QQ(bar) "Fireball" Annihilation to Multiple Vector Bosons
Drawing analogy of replacing the nucleon by heavy chiral quark , the pion
by Goldstone boson , and coupling by coupling, we construct a
statistical model for annihilation, i.e. into longitudinal
weak bosons. This analogy is becoming prescient since the LHC direct bound GeV implies strong Yukawa coupling. Taking TeV, the
mean number ranges from 6 to over 10, with negligible two or three
boson production. With individual or decays suppressed either by
phase space or quark mixing, and given the strong Yukawa coupling, is the likely outcome for very heavy production at the LHC.Comment: 4 pages, 1 figur
New Physics and Enhanced Gluonic Penguin
We discuss the historical development of the gluonic B-penguin, its
sensitivity to effects, and \bsg\sim 10--15% as a possible solution to
the \Bsl and problems. The latter and the connection of the gluonic
penguin to inclusive production through the gluon
anomaly, with the intriguing prospect of 10% inclusive CP asymmetries, bring us
to topics of current interest.Comment: 6 pages, aipproc.sty, 2 figs. (included). Talk presented at b20
Conference, Chicago, June 29 - July 2, 199
Effect of Supersymmetric Right-handed Flavor Mixing on decays
Motivated by the possibility of , we study the
implications for meson system. In a specific model that realizes with large - mixing, right-handed dynamics and a new CP
phase, we present predictions for CP asymmetries in ,
and decays. Even if the measurement of time-dependent CP
asymmetry becomes hampered by very fast oscillation, a finite difference
between the decay rates of mass eigenstates may enable the studies of CP
violations with untagged data samples. Thus, studies of CP violation in the
system would remain useful for the extraction of new physics information.Comment: 7 pages, 15 figure
Effect of Fourth Generation CP Phase on b\to s Transitions
We study the effect of a sequential fourth generation on b\to s gamma, B_s
mixing, B\to K^{(*)}\ell^+\ell^-, X_s\ell^+\ell^- and \phi K_S, taking into
account the presence of a new CP phase in quark mixing. We find that the
effects via electromagnetic and strong penguins, such as in b\to s gamma or CP
violation in B\to \phi K_S, are rather mild, but impact via box or Z penguins
is quite significant. Not only can one have much larger than expected B_s
mixing, even if it is measured near the present limit, mixing dependent CP
violation could become maximal. For electroweak penguin modes, the fourth
generation can provide the enhancement that perhaps may be needed, while the
m_{\ell^+\ell^-} dependence of the forward-backward asymmetry in B\to
K^{*}\ell^+\ell^- can further probe for the fourth generation. These effects
can be studied in detail at the B factories and the Tevatron.Comment: 8 pages, latex, 9 eps figures, one reference added, to appear in EPJ
- …