EDM and g-2 miniworkshop (VRVS: Virtual Room ROCK)Council chamber
Council chamber
CERN
1
Welcome/review of the Report plans for EDM/g-2
Speaker:
DrYannis Semertzidis(BNL)
Slides
2
The history of the neutron EDM
Before 1950 all theorists believed P (parity symmetry)
and that there consequently could be no EDM for any
elementary particle. Ramsey and Purcell [PR 78, 807
(1950)] pointed out that there was no experimental
evidence for P in the case of nuclear forces so it should
be tested. They proposed a search for a neutron EDM
or dn, as a test of P. The 1953 neutron beam
experiment at Oak Ridge showed dn<5x10^{-20} e-
cm. In 1956 Lee and Yang suggest P failure in weak
force, which was confirmed next year by Wu and
Ambler. Many theorists argued that, despite this P
failure, there should still be no EDM because of T (time
reversal symmetry). In 1957 Ramsey and J.D. Jackson
pointed out that there was no experimental evidence
for T in nuclear forces so neutron EDM tests were
continued. In 1964 Oak Ridge Beam experiment
dn<10^{-21} e-cm.
In 1964 Fitch et al discovered failure of CP in
K0L so T would fail if CPT conserved. Theorists reverse
their view and became very interested in our
experiments and are puzzled by our very low EDM
limits. Other labs begin EDM experiments on neutron
and atoms. In 1967 Oak Ridge Beam Experiments
dn<4x10^{-23} e-cm, and in 1973 Grenoble Beam
dn<4x10^{-24} e-cm. In 1984 experiments with ultra
cold neutrons stored in bottles by independent Russian
group in St. Petersburg and by group in Grenoble
dn<3x10^{-25} e-cm. In 1999 St. Petersburg group
and Grenoble group independently dn<6.3x10^{-26} e-
cm. In 2006 Grenoble group with geometric phase
correction find dn<3.0x10^{-26} e-cm. Experimental
results compared with theoretical predictions.
Speaker:
Norman Ramsey(Harvard)
Slides
3
Electric Dipole Moments as probes of new physics
A review of the effective theory treatment
of CP-odd operators contributing to EDMs, and the
ensuing sensitivity to new CP-violating physics. As
examples, new dimension-five operators in the MSSM,
and a new Higgs-sector threshold allowing for
electroweak baryogenesis, will be discussed.
Speaker:
Adam Ritz(Victoria/Canada)
Slides
11:00
Coffee break
4
Review of the neutron EDMs (ILL and SNS)
This talk will review three neutron EDM experiments:
First, the room-temperature experiment at ILL, the
results of which have just been published; second, the
CryoEDM experiment at ILL that is now nearing the
completion of its construction, and which promises an
improvement in sensitivity of two orders of magnitude;
and third, for the longer term, the cryogenic experiment
that is planned to be built at the SNS in Oak Ridge,
which is anticipated to have a sensitivity of below 1E-28
e.cm.
Speaker:
P. Harris(Sussex)
Slides
5
The neutron experiment at PSI plus the muon EDM prospects
Status and plans for the neutron EDM experiment at
PSI are updated. The idea for a compact muon EDM
experiment with a sensitivity of 5x10^(-23) e-cm will be
briefly discussed.
Using the e^+- mu^-+ + E_Tmiss signature in the search for supersymmetry and lepton flavour violation in neutralino decays
Speaker:
Nikolai Krasnikov
Slides
16
Neutralino spin measurement with ATLAS
Speaker:
DrAndrea Ventura(INFN Lecce)
Slides
16:00
break
17
WG1, convener meeting
13:00
lunch break
EDM and g-2 miniworkshop (VRVS: Virtual Room ROCK)Council chamber
Council chamber
CERN
18
How to measure g-2 with 15 GeV muons
Dilating the muon lifetime to 300 microsec can lead to
ten times better accuracy. This can be achieved with a
new design of storage ring using discrete magnets and
calibrating the field by means of polarised protons in
flight.
Speaker:
F. Farley(Yale)
Slides
19
The deuteron EDM experiment
A theoretical motivation for an EDM search on the
deuteron will be presented, together with the so-called
resonance method. The basic features of this method
will be discussed in some detail.
Speaker:
G. Onderwater(KVI)
Slides
20
Polarimetry for the dEDM method
Speaker:
G. Venanzoni(Frascati)
Slides
15:55
Coffee break
21
EDM of Proton and 3He
Speaker:
W. Morse(BNL)
Slides
22
A plan of comprehensive investigation of systematic errors and spin coherence time for the deuteron resonance EDM experiment
Speaker:
Y. Orlov(Cornell)
Slides
23
Spin and beam dynamics simulations
Speaker:
A. Luccio(BNL)
Slides
24
EDM searches on atoms with deformed nuclei: Ra-225
Nuclei which are characterized by octupole deformation
should have relatively large Schiff moments and
therefore be particularly sensitive to T-violating
interactions in the nucleus. Currently, the most
stringent limits in this sector are set by measurements
made at the University of Washington, which restrict
the atomic EDM of Hg-199 to <2.1x10^{-28} e cm. We
are developing an experiment around Ra-225, which is
predicted to be two to three orders of magnitude more
sensitive to T-violating interactions in the nucleus than
Hg-199. The experimental scheme and our recent
success in laser-trapping radium will be discussed along
with other group's efforts to take advantage of this
enhancement.
Large Electroweak Logarithms in Heavy Quark Decay at LHC
Speaker:
Alessia Gruzza
33
The relevance of electroweak effects in the overall t-channel single top production at LHC
Speaker:
Claudio Verzegnassi
11:00
break
34
Contributions from dimension five and six effective operators to flavour changing top physics
Speaker:
Pedro Miguel Martins Ferreira
Slides
35
Wtb Anomalous Top Quark Couplings
Speaker:
Antonio Onofre
Slides
36
FCNC top decays
Speaker:
Leonardo Benucci
Slides
EDM and g-2 miniworkshop (VRVS: Virtual Room ROCK)TH Auditorium
TH Auditorium
CERN
37
(Cancelled, M. Kozlov covered some of the material) Overview of the electron EDM experiments
The experiment responsible for the current limit on the
electron's electric dipole moment is described. A very
brief overview of the many current efforts to push this
limit is presented. Efforts underway at the University of
Oklahoma to exploit the unique magnetic properties of
PbF are described with a particular emphasis on the
development of new resonant enhanced multiphoton
ionization schemes.
Speaker:
N. Shafer-Ray(Oklahoma Univ.)
Slides
38
Theory of molecular EDM experiments
Speaker:
M. Kozlov(St. Petersburg)
Slides
We discuss the relation between molecular EDM and electron EDM and how reliable the underlying molecular theory currently is.
39
EDM experiments as probes of SUSY
Speaker:
Isabella Masina(Rome)
Slides
10:45
Coffee break
40
Measuring the Muon Anomaly to 0.25 ppm
A proposal has been approved at the BNL AGS to
improve upon the muon magnetic anomaly
measurement uncertainty by a factor of two, to 0.25
ppm. The current experimental value differs from the
theoretical value by about 3 standard deviations. This
suggests the possibility of new physics, and an
increased data set could make the comparison between
theory and experiment more definitive.
Speaker:
J. Miller(Boston)
Slides
41
Evaluation of the hadronic vacuum polarization contribution to the muon g-2
The contribution from hadronic vacuum polarization to
the muon anomalous magnetic moment is calculated
with a dispersion relation using experimental data and
perturbative QCD as input. Its uncertainty is presently
limiting the Standard Model prediction, and is of the
same order as the experimental error on g-2. The state
of the art of the calculation is discussed and
perpectives for future improvement are given.
Speaker:
Andreas Hoecker(CERN)
Slides
42
Hadrons at VEPP-2M
The Budker Institute (Novosibirsk, Russia) is mostly
dedicated to physics in $e^+ e^-$ colliders at relatively
low energy. The VEPP-2M collider operated in 1992-
2000 at s = 0.36 to 1.4 GeV region and provided high
luminosity for detectors CMD-2 and SND. High level of
collected statistics as well as careful design,
construction and operation of the detectors, and data
processing allowed us to obtain numerous interesting
physics results. From those, the most important one is
measurement of hadron contribution to the anomalous
magnetic moment of muon.
At the present moment, most of our efforts are put on
development and construction of the next generation
Budker Institute collider, VEPP-2000 (which will operate
at s = 0.4 to 2.0 GeV) and the new detector CMD-3.
The second detector, SND, will be upgraded.
We plan to obtain first luminosity in the VEPP-2000 ring
by the end of this year (2006), and start first physics
runs in 2007.
Speaker:
S. Redin(Novosibirsk)
Slides
43
e+e- Hadronic Cross Section measurement at DAFNE with the KLOE detector
At the Frascati phi-factory DAFNE the pion form factor is
measured by means of the "radiative return", i.e. by
using events in which one of the collider electrons
(positrons) has radiated an initial state radiation photon
(ISR), lowering in such a way the invariant mass M(pi pi)
of the two-pion-system.
In a recent publication of the KLOE collaboration the
initial state radiation photon had been required to be at
small polar angles with respect to the beam axis, the so
called "Small Angle analysis", using data collected in
2001. We show an update of this analysis, using 2002
data. We also present results from a new and
complementary analysis in which the photon is tagged
at large polar angles. Only like this the threshold region
M^2(pi pi)< 0.35 GeV^2 becomes accessible.
Study of the decay B_s->J/psi phi with the CMS detector
Speaker:
Lotte Wilke(Uni Zuerich)
Slides
57
Missing particle reconstruction using vertexing
Speaker:
Andrey Starodumov(ETH Zuerich)
Slides
58
Rare B-decay backgrounds studies - update
Speaker:
Nicolai Nikitine(Moscow)
Slides
16:10
break
59
Tools (where we are)
Speaker:
Sven Heinemeyer(IFCA (CSIC-UC))
Slides
60
Flavor benchmarks
Speaker:
Sven Heinemeyer(IFCA (CSIC-UC))
Slides
61
CMS benchmark analysis
Speaker:
Michael Schmitt(University of Florida)
Slides
62
Discussion
WG3, Tuesday afternoonTH Auditorium
TH Auditorium
CERN
63
Leptogenesis and LFV in type I+II
seesaw mechanism
Speaker:
Stephane Lavignac(SPhT Saclay)
Slides
64
Lepton Flavor Violation, Leptogenesis and Neutrino Mixing in QLC scenarios
Speaker:
Werner Rodejohann(TU Muenchen)
Slides
65
Flavour violation in ``minimal'' SUSY SU(5) models
We compare the patterns of the flavor violating effects
which are radiatively induced via the neutrino Yukawa
couplings in "minimal" SU(5) models with the Type I or Type
II seesaw mechanism for the neutrino masses. We pay special
attention to the ratio between the lepton flavor violations
and the quark flavor violations, and especially to its
dependence on the UV physics, such as the GUT parameters and
cutoff scale.
We determine the leptonic mixing matrix elements without
assuming unitarity. To do this, we firstly develop the
formalism to study neutrino oscillations and then we perform
the fits. We realize that oscillation experiments alone are
not enough to constrain all the matrix elements. However, by
combining them with other electroweak data, we can determine
all of them.
Speaker:
Carla Biggio(Madrid)
Slides
EDM and g-2 miniworkshop (VRVS: Virtual Room ROCK)TH Auditorium
TH Auditorium
CERN
67
New Measurement of the Electron Magnetic Moment and the Fine Structure Constant
Speaker:
Gerald Gabrielse(Harvard)
Slides
68
More on EDM correlations in SUSY
Certain relations among EDMs can be viewed as
indirect evidence for supersymmetry. I will report
on recent work on EDM correlations which includes
analyses of non-universal SUSY models.
Prospects for a Muon to Electron Conversion Experiment at Fermilab
It is proposed to measure the rate of coherent muon to
electron conversion in the field of a nucleus, without
neutrino production, to a precision of 10^{-16} times the
rate of ordinary muon capture on the nucleus. This is an
example of charged lepton flavor violation. The measurement
would be several thousand times more sensitive than previous
experiments. A working group has been formed to examine the
feasibility of performing the experiment at Fermilab. The
group met in mid-September, 2006, at Fermilab. I will
describe briefly the status and prospects of this project
and what transpired at the meeting.
Speaker:
Jim Miller(Boston)
Slides
76
Search for B -> mu + e with LHCb
We discuss the LHCb potential for the LFV B->e mu
decay and the possibility of constraining the leptoquark
mass within the context of the Pati-Salam SU(4) model.
Speaker:
Walter Bonivento(I.N.F.N. Cagliari, Italy)
Slides
77
How can CP phases contribute to LFV processes ?
We discuss the dependence of the rates of LFV processes
mu -> e + gamma, tau -> e + gamma, tau -> mu + gamma (l_i ->
l_j + gamma) and their ratios in MSSM with right-handed
neutrinos on CP phases. We focus on the case of
quasi-degenerate in mass heavy Majorana neutrinos. The three
types of light neutrino mass spectrum - normal hierarchical,
inverted hierarchical and quasi-degenerate - are considered.
Speaker:
DrTetsuo Shindou(SISSA)
Slides
78
Neutrino Masses and Mixing in Split Supersymmetry
We analyze the possibility of generating masses
and mixing angles to neutrinos via bilinear R-Parity and lepton number
violation alone (not trilinear).
Speaker:
DrMarco Aurelio Diaz(Universidad Catolica de Chile)
The B -> Xs gamma branching ratio estimate at the
next-to-next-to-leading order in QCD is discussed.
Constrains on certain beyond-SM effects are updated.
Speaker:
Mikolaj Misiak(Warsaw)
Slides
83
Contributions of Magnetic Resonance to Other Sciences
One of the attractive features of fundamental research
is the frequency with which new methods or discoveries
in one narrow field of research eventually often make
very important contributions to other fields. This has
been conspicuously true of magnetic resonance, with
which I have been associated ever since I.I. Rabi
invented and demonstrated the method for the
important but limited purpose of measuring nuclear
magnetic moments. The following year we were
surprised by the unexpected appearance of the H2
magnetic resonance, which we soon showed was due
to the magnetic effects of the other proton and the
rotating charged molecule; from these measurements
we could also obtain important chemical and molecular
information. We had another shock when we studied
D2 and found the resonance curves were spread more
widely for D2 than H2 even though the magnetic
interactions should have been much smaller. We found
we could explain this by assuming that the deuteron
had an electric quadrupole moment and J. Schwinger
pointed out that this would require the existence of a
previously unsuspected electric tensor force between
the neutron and the proton. With this, the resonance
method was also giving new fundamental information
about nuclear forces. In 1944, Rabi and I pointed out
that it should be possible by the Dirac theory and our
past resonance experiments to calculate exactly the
hyperfine interaction between the electron and the
proton in the hydrogen atom and we had two graduate
students, Nafe and Nelson do the experiment and they
found a disagreement which led J. Schwinger to
develop the first successful relativistic quantum field
theory and QED. In 1964, Purcell, Bloch and others
detected magnetic resonance transitions by the effect
of the transition on the oscillator, called NMR, making
possible measurements on liquids, solids and gases
and giving information on chemical shifts and thermal
relaxation times T1 and T2. I developed a magnetic
resonance method for setting a limit to the EDM of a
neutron in a beam and with others for neutrons stored
in a suitably coated bottle. Magnetic resonance
measurements provide high stability atomic clocks.
Both the second and the meter are now defined in
terms of atomic clocks. Lauterbuhr, Mansfield and
Damadian and others developed the important
methods of using inhomogeneous magnetic fields to
localize the magnetic resonance in a tissue sample
producing beautiful and valuable magnetic resonance
images, MRI’s, and fMRI’s.
