The Non-Thermal Universe - Astroparticle physics in the Netherlands
... 2008. This second stage will be coordinated within ASPERA, an FP6 ERA-Network, with the
aim to give detailed implementation scenarios and priorities.
The present “first stage” roadmap describes the status and desirable options for the next
decade and will help to define the financial and organizatio ...
Study of Neutrino Interactions at the T2K Near Detector Complex
... understanding of neutrino interactions at T2K beam energies
-> JPARC operation will resume in December 2011
-> T2K data collection will be resumed soon afterward
-> Plenary talk, “J-PARC Status after the Earthquake on March 11”
by K. Tanaka, Wednesday 11:40 am (P3-6)
Plasma_02 - StealthSkater
... [Henry Sobel]: In a reactor, you get elements being produced. And when they decay, they give off
neutrinos. So you get lots and lots of neutrinos. It's an enormous number -- 10 with
13 zeros after it (i.e., 1013) -- per second, going through every little square centimeter
of your detector nearby the ...
Automatic scanning of emulsion films for the OPERA - INFN
... All the prediction of the SM have been confirmed by many precise experiments: the charmed particles, the b and t quarks, the weak neutral current,
the mass of the vector bosons W ± and Z 0 are all well known.
However, the SM cannot be considered the final theory of elementary
particles: in this theo ...
Neutrino Mass and Direct Measurements
... Higgs, one obtains interaction terms in the standard model Lagrangian that look like νLC HνL where H is the Higgs
field. The left-handed neutrino field in the standard model has weak isospin I = 12 and hypercharge Y = −1. This
interaction term must cancel the quantum numbers to be gauge invariant, a ...
Ten Lectures on the ElectroWeak Interactions
... The Standard Model is the reference theory for particle physics, including the fact that one
often explicitly refers to Beyond the Standard Model physics. Although maybe practical, I have
never liked the distinction between Standard Model and Beyond the Standard Model physics.
These lectures are cer ...
... Quantum Gravity (or something else (e.g. SUGRA)) may lead
at low-energies (below Plnack scale or a scale M*) to a term
in the effective Lagrangian (in curved back space-time backgrounds):
Neutrino oscillations, energy-momentum conservation and
... measurements one can tell (through E = p2 + m2 ) which mass eigenstate
is emitted, the coherence is lost and oscillations disappear!
Full analogy with electron interference in double slit experiments: if one can
establish which slit the detected electron has passed through, the interference
... • if one postulates classically a dispersion relation with only naively (no anisotropic scaling) nonrenormalizable operators (i.e. terms η(n)pn/MPln-2 with n≥3 and η(n)≈O(1) in disp.rel.)
• then radiative (loop) corrections involve integration up to the natural cutoff MPl will generate the terms
PHY313 - CEI544 The Mystery of Matter From Quarks to the
... • The J/ particle is made up of a c quark
•All quarks carry one of 3 colors so
and an antiquark. This combination
that the Pauli principle is satisfied.
cancels out the “charmed” character of
However, any real elementary
this particle. The charm is hidden inside.
particle, like p and n, cannot have ...
... symmetry breaking — the one Higgs double model — is at least approximately
correct. What does that have to do with neutrinos?
The tiny neutrino masses point to three different possibilities.
1. Neutrinos talk to the Higgs boson very, very weakly;
2. Neutrinos talk to a different Higgs boson – there ...
Neutrino Oscillations and Beyond Standard Model Physics
... Assume there is new physics at a high scale Λ. It will manifest itself by
non-renormalizable operators suppressed by powers of Λ.
Weinberg 1979: there is a unique dim-5 operator consistent with the
gauge symmetry of the SM, and this operator will lead to a Majorana
mass term for neutrinos after EWSB ...
... Super-Kamiokande also confirmed the observation
of the solar neutrino deficit first seen by Davis and
Bahcall. In the process, they took the first image
of the Sun using neutrinos. Super-K’s data, when
combined with data from the SNO collaboration –
whose SNO detector resides in the Creighton mine i ...
... LSND saw the 3.8s excess of electron antineutrinos from muon antineutrino beam; since this
excess is not understood by neutrino Standard Model, it might be new physics
Data is consistent with flat solution, but sidereal time solution is not excluded.
LSND oscillation candidate sidereal time distribu ...
Neutrino oscillations II
... • We clearly know neutrinos oscillate Neutrinos have
• It seems that there are three allowed regions of
parameters (sin22 and m2) that the current data
seem to point
... Atmospheric neutrino (nm > ) oscillations are established (IMB+Kam+SK+Macro+Sudan)
At that frequency, electron neutrino oscillations are small (CHOOZ)
This allows a consistent picture with 3-family oscillations
LMA: q12 ~300 Dm122~7 10-5eV2 , q23 ~450 Dm23 2~ 2.5 10-3eV2, q13 <~ 100
Some Problems in String Cosmology
... understanding of weak interaction: V-A theory, Standard Model of
electroweak interaction (Glashow, Weinberg and Salam: Nobel Prize)
CP violation => One of the basic ingredient why we are here in the Universe , explain why
there is more matter than anti-matter in our universe (Sahkarov, 1966).
The di ...
Neutrinos and our Sun
... iii Natural radioactive decays
in the interior of the earth give
out neutrinos at the rate of
about 6 x 106 cm- 2 sec -1 with
energy 1 MeV. (ii)The relic neutrinos, which are left over from
the early epochs of the evolution of the Universe; they have
a number density of - 110 cm- 3
for each neutrino ...
Precision atomic physics tests of P, CP, and CPT symmetries
... In each case symmetry violations were found before corresponding
particles could be produced directly
CPT symmetry is a unique signature of physics beyond quantum
Provides one of few possible ways to access Quantum Gravity
Neutrinos and SN1987A
... The Homestake experiment was one of the first that successfully
studied neutrinos that were emitted from the fusion process in the
core of the Sun and subsequently made their way through Earth.
It was scientifically proven, however, that this experiment was
only observing about a third of the neutri ...
Lorentz-violating neutrino oscillations
Lorentz-violating neutrino oscillation refers to the quantum phenomenon of neutrino oscillations described in a framework that allows the breakdown of Lorentz invariance. Today, neutrino oscillation or change of one type of neutrino into another is an experimentally verified fact; however, the details of the underlying theory responsible for these processes remain an open issue and an active field of study. The conventional model of neutrino oscillations assumes that neutrinos are massive, which provides a successful description of a wide variety of experiments; however, there are a few oscillation signals that cannot be accommodated within this model, which motivates the study of other descriptions. In a theory with Lorentz violation neutrinos can oscillate with and without masses and many other novel effects described below appear. The generalization of the theory by incorporating Lorentz violation has shown to provide alternative scenarios to explain all the established experimental data through the construction of global models.