University of Rochester
High Energy
and
Nuclear Physics Seminars 2011-2012
Arie Bodek, Regnina Demina
Last Updated Oct. 25, 2011
Bodek at pas.rochester.edu, regina at pas.rochester.edu
Seminars are Tuesdays, 3:30-4:30 pm, room BL372 - See details (Title and Abstract) for each seminar after the list below.
High
Energy
and
Nuclear
Physics
Seminars
Fall
2011
-
Spring
2012
Sept.
13,
2011 Tuesday Regina Demina, UR
Title: t-tbar charge
production
asymmetry in p-pbar collisions.
Sept.
20,
2011 Tuesday Melanie Day,
UR T2K Seminar
Title: Indications of Electron
Neutrino
Appearance at T2K
Abstract: Starting in 1998 experiments began to show that neutrinos oscillate from one flavor to another over time, a phenomena that is explained by the existence of neutrino mass. Oscillation from muon and electron neutrino into tau neutrino has been measured to great precision in many experiments. T2K is a long baseline experiment from Tokai to Kamioka in Japan that was designed to measure the more difficult oscillation from muon neutrino into electron neutrino. A description of the T2K experiment and the recent result showing an indication of electron neutrino appearance at the far detector with a significance of 2.5σ will be discussed.
Sept. 27, 2011 Tuesday No seminar Kevin and Steve out of town.
Oct.
4,
2011 Tuesday Arie
Bodek,
Title: Neutrino
Quasielastic
Scattering from Nuclear Targets
Abstract. We present a
parametrization of
the observed enhancement in the transverse electron
quasielas-tic (QE)
response function for nucleons bound in carbon as a
function of the
square of the four momentum transfer (Q2) in terms of a
correction to
the magnetic form factors of bound nucleons.. The Q2
dependence of the
transverse enhancement is observed to resolve much of the
long standing
discrepancy in the QE total cross sections and
differential
distributions between low energy and high energy neutrino
experiments
on nuclear targets (sometimes referred to as the axial
mass anomaly).
Oct. 6, 2011 Thursday, 3:30 pm BL372 Special Seminar - Luca Grandi (Princeton) Dark Matter
Oct. 11, 2011 Tuesday Jesse Woden, Stanford - Neutrinoless Double Beta Decay (Fall Break)
Oct.
18,
2011 Tuesday - No seminar
Oct. 25, 2011 Tuesday - No
seminar,
Quantum Optics Seminar instead
Nov.
1,
2011 Tuesday - No seminar - election day
Nov. 8, 2011 Tuesday
- Thomas
McElmurry, University of
Rochester
Title:
Top Pair Forward-Backward Asymmetry from Loops of New Strongly
Coupled
Quarks
Abstract:
We examine loop-mediated effects of new heavy quarks Q=(t',b')
on ttbar
production at hadron colliders, using a phenomenological
model
with flavor off-diagonal couplings of charged and neutral
scalars
phi=(phi^+-,phi^0) to Q. We show that an
invariant-mass-dependent
asymmetry, in the t tbar center of mass, consistent with those
recently reported by the CDF collaboration can be obtained for
quark
masses around 350-500 GeV, scalar masses of order 100-200 GeV,
and
modest to strong Yukawa couplings. Wefurther show that this
invariant-mass dependence can be used to probe the parameters
of the
underlying model. The requisite strong interactions suggest a
non-perturbative electroweak symmetry breaking mechanism and
composite
states at the weak scale. A typical prediction of this
framework
is
that the new heavy quarks decay dominantly into t phi final
states.
Nov. 15, 2011 Tuesday - OPEN
Nov.
22,
2011 Tuesday - OPEN
Nov.
29,
2011 Tuesday Robert
Shrock
of Stony BrooK Title:
"Some
Recent
Results on Technicolor and
Extended Technicolor Models"
Dec
. 6,
2011 Tuesday John
Arrington
- Argonne National Lab.
Title: High
Momentum
Components and Short Range Correlations in Nuclei
Dec
. 13,
2011 Tuesday - no seminar
Jan
. 24,
2012 Tuesday - no seminar
Jan . 31, 2012 Tuesday -
no seminar
Feb
. 7, 2012 Tuesday - no seminar
Feb . 14, 2012 Tuesday - no
seminar
Feb . 21, 2012 Tuesday -
no seminar
Feb . 28, 2012 Tuesday - no
seminar
Mar
. 6,
2012 Tuesday - Zegev Ben Zvi -
Wisconsin
Mar . 20, 2012 Tuesday -
TBA
Mar . 27, 2012 Tuesday -
OPEN
April
.
3, 2012 Tuesday -
Constantine Papageorgakis, Rutgers
April . 10, 2012 Tuesday -
OPEN
April . 17, 2012 Tuesday -
OPEN
April . 24, 2012 Tuesday -
OPEN
May . 1, 2012 Tuesday - OPEN
--------------------------------
----Historical
Records
Spring
2011
Jan
18,
2011
no
seminar
faculty
senate
-->
January
17,
2011
Liang
Yang
http://www.pas.rochester.edu/urpas/particle_physics_seminar_13
Jan 25, 2011 no seminar
Feb. 1, 2011 Lauren Hsu http://www.pas.rochester.edu/urpas/calendar/2011/02/1
Feb.. 8, 2011 Juan Estrada http://www.pas.rochester.edu/urpas/calendar/2011/02/8
Feb. 15, 2011 - (faculty senate)
David
Goldstein http://www.pas.rochester.edu/urpas/calendar/2011/02/15
Feb. 16, 2011 (Wed) Alex Shushkov http://www.pas.rochester.edu/urpas/calendar/2011/02/16
Feb. 22, 2011 Jesse Wodin http://www.pas.rochester.edu/urpas/calendar/2011/02/22
March 2, 2011 (Colloq)
Doreen
Wackeroth http://www.pas.rochester.edu/urpas/physics_astronomy_colloquium_31
March 1, 2011 Open
March 8, 2011 Spring Break, no seminar
March 15, 2011 no seminar faculty senate
March 22, 2011 - Henning
Fleatcher, University of Rochester SUSY searches
at LHC
March 29, 2011 - Open
April 5, 2011 - Luca Grandi, Princeton - Dark Matter
April 12, 2011 - Philip Rodrigues - New Results for T2K
April 19, 2011 no seminar faculty senate
April 26, 2010 Open - Last seminarTBA
requests
From
Ferbel; contact Hassan
Jawahery, U of Maryland.
From Orr; invite Dave Gerdes at Michigan
(gerdes@umich.edu)
to talk about the Dark Energy Survey
Veronica
Sanz vsanz@yorku.ca,veronica.hirn@gmail. moved
to Spring.
Henning Fleatcher
Sept 14
,
2010
no
seminar. Kevin out of Town
Sept 21, , 2010
no
seminar
Sept 28,
2010
not
seminar,
Kevin
out
of
Town
Oct 5,
2010
Ian
Taylor
(SUNY
SB)
:
The
first
T2K
physics
run
Abstract:
T2K is a long-baseline
neutrino
oscillation experiment in Japan, which started data taking
in January
2010. The talk will cover the design philosophy of
the
experiment, the status and performance of the beam and
detectors during
the first run, the progress towards a first analysis and
plans for the
future.
Oct
12,
2010 Frozen in Time: Neutrino
Physics with
Liquid Argon Detectors
Mitch Soderberg ; Syracuse University / Fermilab
Abstract
The discovery just over a
decade ago
that neutrinos can change
identities by oscillating between flavors was a remarkable
revision to the
Standard Model description of these
particles. This discovery implies that neutrinos are not
massless as had
previously been thought, and
opens the possibility that they might play a crucial role
in answering
fundamental questions such
as whether
the observed matterantimatter
asymmetry in the universe can be attributed to CP
violating
neutrino interactions.
Liquid Argon
Time Projection Chambers (LAr
TPCs) are ideally suited for the study of neutrino
interactions
thanks to precision detection
capabilities that make them the modern day equivalent of bubble
chambers. In
this talk I will introduce the
LAr TPC concept, highlighting recent work in the
development of
this technology for use in studying
neutrinos with increasingly larger detectors. After presenting
the details
of current work in this area
at Fermilab, I will conclude by discussing preliminary
ideas for the
next generation of neutrino oscillation
experiments that could feature
20 kiloton LAr TPC far detector at the Deep
Underground Science and Engineering Laboratory (DUSEL) in
South Dakota.
Oct.
26,
2010
no
seminar,
levin
out
of
town.
Nov. 2, 2010 no seminar, faculty sentate
Nov. 9, 2010 no seminar Kevin out of town
Nov, 16, 2010 Andrew Blechman blechman@wayne.edu
Nov. 23, 2010 Open
Nov. 30, 2010 Open
Dec. 7, 2010 no seminar Kevin out of Town
requests:
High
Energy
and
Nuclear
Physics
Seminars
Spring
2010
Jan 19,
2010
no
seminar. Faculty senate
Jan 26, 2010 no
seminar,
Kevin
out of town (Jan 25-30)
Feb 2,
2010
Alexander
Mitov, Stony Brook
alexander.mitov@stonybrook.edu
Title: "How well do we
know
the top-pair cross-section at the Tevatron and LHC?"
Abstract: I will present
the
many theoretical advances made in the last couple of years that
are
needed for precision studies of heavy flavor production at
hadron
colliders (fixed order calculations, massive gauge theory
amplitudes,
all order resummations). I will then focus on LHC and Tevatron
phenomenology addressing the question: how well do we know the
top-pair
cross-section at the Tevatron and LHC?
Feb. 9, 2010
no
seminar,
Kevin out of town (Feb.
8-12)
Feb. 16,
2010
Un
Ki
Yang,
Manchester
Title: Searches for new physics in top quark and
neutrino
sectors at hadron colliders
Abstact: I will present the recent CDF results
on the
searches for new physics in top quark sector, mainly charged
Higgs, and
will also discuss the prospects for few interesting new physics
searches in the top quark and neutrino sectors using early ATLAS
data
at the LHC.
Feb. 23,
2010 no
seminar
Kevin
out of town (Feb. 22-26)
March 2,
2010 open
Title:
Abstact:
March 9, 2010 No seminar - Spring break.
Monday March 15,
2020,
Particle/Nuclear Seminar
Prof.
Osamu Hashimoto : Department of physics, Tohoku
University,
Sendai, JAPAN
Title:
Test of
charge symmetry breaking in A=7 hypernuclei
Abstract : Hypernuclear spectroscopy made
progress in the
past years both by hadronic beams and electron
beams. I
will give introductory description of Lambda hypernuclear
spectroscopy,
emphasizing our programs at KEK and Jefferson Lab Hall
C. As an
example of recent results at JLab, test of charge symmetry
breaking in
A=7 T=1 iso-triplet hypernuclei will be presented based on
our binding
energy determination of $^{7}_{\Lambda}$He. Research
activity of
strangeness nuclear physics group at Tohoku University, and
future
prospect of the study of strangeness degree of freedom in
hadronic
many-body sistem will be also briefly described.
,March
16,
2010
No
seminar,
Aran
out of town, Faculty senate
March 23,
2010 no seminar,
Kevin out of town
Brock Tweedie
<brock@pha.jhu.edu> asked him to move from March
23 to
March 30,10
March 30,
2010 Brock Tweedie John
Hopkina
<brock@pha.jhu.edu>
Title:
Abstact:
Wed. March 31, 2010 Colloq.
3:30 pm
Tea, Talk 3:45 pm
Speaker: "Bill McDonough" <mcdonoug@geol.umd.edu>
Talk title_: Geoneutrino/Antineutrino detection: an
interdisciplinary
experiment at the boundaries of physics, astrophysics, geology
and
national security
Short Abstract_: The KamLAND experiment in Japan
successfully measured the antineutrino flux from an encircling
array of
nuclear power plants,
as well as detecting the geoneutrino flux from the earth.
This
and the Borexino experiments are now placing limits on the
distribution
of heat
producing elements in the Earth [the nuclear power that drives
convection in the earth and plate tectonics], the potential
existence of
a natural georeactor (nuclear) deep inside the earth, as well as
providing insights into the solar burning model of the
sun. I will
present proposals for large (10-50 kT) liquid scintillation
experiments, which include a mobile device that is deployable in
ocean,
with specific
applications in physics, astrophysics, geology and national
security. I will also show how the results from the
KamLAND
geoneutrino experiment
challenges geophysical models for the thermal evolution of the
earth
and alternatively support a significant contribution from
secular
cooling of
the earth's mantle.
April 6,
2010 no
seminar (Faculty
senate)
April 13, 2010 Florencia Canelli
, University of Chicago
Title: New Electroweak and Top Physics Results from the
Tevatron
Abstract: In this seminar I will show the latest and most
precise electroweak and top quark physics results from the CDF
and D0
experiments. I will include newly observed diboson processes,
the
Tevatron combined W boson mass, the new CDF top quark mass, and
the
latest results regarding top quark properties. I will conclude
by
explaining how these measurements help us get closer to finding
the
elusive Higgs boson.
April 20, 2010 no seminar, Kevin out of town
April 27,
2010 Veronica
Sanz-Gonzalez,
York
University
( vsanz@yorku.ca)
Title"Dark Matter Leaves a
Trace",
Abstract
Pseudo-Dirac Dark Matter is a type of dark matter which behaves
Dirac-like for relic abundance and Majorana-like in direct
detection
experiments. Dirac dark matter has unsuppressed s-wave
interactions,
avoiding overabundance issues. Majorana dark matter lacks
potentially
dangerous vector interactions with nuclei. Satisfying both
constraints,
relic abundance and direct detection bounds, sets the splitting
between
two nearly-degenerate states composing a pseudo-Dirac fermion.
This
physical scale is such that missing energy is produced in
association
with visible displaced vertices of two leptons or jets at
colliders.
Because of the additional information from relic abundance, all
parameters can be extracted from the decay length and the
invariant mass of the products, even though the measurement
involves
missing energy.------
emails sent to : tye (sht5@cornell.edu), asner
(asner@physics.carleton.ca)
Archive
of High Energy and
Nuclear Physics Seminars 2008-2009
Fall
08
(For
titles
and
Abstract,
see
bottom
of
this
page)
9/9/08
- Andrew Blechman,
University of Toronto (hosted by Arie Bodek)
9/16/08
- no seminar
9/23/08
- Ashok Das, University of
Rocheseter (hosted
by Arie
Bodek)
9/30/08
- No seminar - Rosh Hashana
10/7/08 -
Haryo Sumowidagdo ,
Florida State University (hosted
by
Aran
Garcia-Bellido)
10/14/08
Sarada
Rajeev, University of Rochesrer (hosted by Arie Bodek)
10/21/08
Mark
Trodden, Syracuse University -(hosted
by
Arie
Bodek)
10/28/08
Sourabh
Dube,
Rutgers
(hosted
by Aran
Garcia-Bellido)
11/4/08
Carsten Rott, Ohio State (hosted
by
Aran
Garcia-Bellido)
11/11/08 - Pablo D.
Goldenzweig, U.
Cincinnati (hosted by Aran Garcia-Bellido)
11/18/08 -
Ron Poling
, U Minnesota (hosted by
Arie Bodek)
11/25/08 -
Jiyeon
Han, University of Rochester (hosted
by Arie Bodek)
12/2
-
no
seminar
12/9/08 -
Lynne
Orr, University of Rochester (hosted
by
Arie
Bodek)
Spring
09
(For
titles
and
Abstract,
see
bottom
of
this
page)
1/20/90
Urlich Baur,
University of Buffalo (hosted
by
Arie
Bodek)
1/27/09 - Cristiano Galbiati,
Princeton
(Hosted by Kevin McFarland)
2/3/09
-
Open - hosted by
2/10/09- Jodi Cooley, Stanford
University
http://med.stanford.edu/profiles/frdActionServlet?choiceId=printerprofile&fid=8820
http://med.stanford.edu/profiles/Jodi_Cooley-Sekula/
2/17/09
-
Open - hosted
by
2/24/09 - Amanda Weinstein, UCLA
http://www.astro.ucla.edu/~veritas/team.htm
3/3/09 -
Jonghee Yoo,
Fermilab
Tuesday 3/10/09 - No seminar - Spring Break
(Aran out
of town)
Tuesday
3/17/09 - No seminar - APS meeting
(Aran out
of
town)
3/24/09 - no seminar
3/31/09 -
Cynthia Keppel,
Hampton University and Jefferson Lab (hosted
by
Arie
Bodek)
4/2/ 2009 Special HEP Seminar
Dave Toback (Texas A&M) - THIS
IS
A
THURSDAY
-
(hosted
by
Aran
Garcia-Bellido)
4/7/09
Steve Ritz,
NASA (hosted
by Arie Bodek) - Aran out of
town
4/14/09 -Toichiro Kinoshita,
Cornell (hosted by Arie Bodek)
4/21/09
- William Wester,
FNAL (hosted
by Aran Garcia-Bellido)
Wed 4/22/09
Geumbong
Yu, Department of Physics and Astronomy,
University of
Rochester
TITLES AND ABSTRACTS
Fall 2008 -
September 22, 2009
Speaker: Adrian
Melissinos, Rochester.
http://www.pas.rochester.edu/urpas/faculty_page/melissinos_adrian_c
Title: "The effect of the tides on the LIGO interferometers"
Abstract: Long arm interferometers are subject to the tidal
deformations of the Earth, which must be compensated to keep
the
instrument on a dark fringe. In addition tidal forces produce
a
time-dependent, f ~ 10^{-5} Hz, gravity gradient along the
arms which
affects the signal at the free spectral range frequency. Data
obtained
by the LIGO Scientific Collaboration show that the observed
tidal lines
agree with the known values to within the measurement
resolution of
6x10^{-9} Hz.
September 29, 2009
http://www.pas.rochester.edu/urpas/calendar/2009/09/29
https://www.pas.rochester.edu/urpas/particle_physics_seminar_5
Speaker: Craig Hogan,
Fermilab
Title: "Holographic
Noise in
Michelson Interferometers: a Direct Experimental Probe
of
Unification at the Planck Scale"
Abstract: Classical spacetime and quantum mass-energy form the
basis of
all of physics. They become inconsistent with each other
at the
Planck scale,
5.4 times 10^{-44} seconds, which may signify a need for
reconciliation in a unified theory. Although
proposals for
unified theories exist, a direct experimental probe of
this
scale, 16 orders of magnitude above Tevatron energy, has
seemed
hopelessly out of reach. However in a particular
interpretation
of holographic unified theories, derived from black hole
evaporation physics, a world assembled out
of
Planck-scale waves displays effects of unification
with a new kind of uncertainty in position at the Planck
diffraction scale, the geometric mean of the Planck
length and
the apparatus size. In this case a new phenomenon may
measurable,
an indeterminacy of spacetime position that appears as
noise in
interferometers. The colloquium will discuss the theory
of the
effect, and our plans to build a holographic
interferometer at
Fermilab to measure it.
Oct. 6,
2009 no seminar
Oct. 13,
2009
No Seminar
Oct. 20, 2009
Wine and Cheese in honor of Prof. Hagen's Sakurai
Prize. (Comments by Bigelow, Bodek, Slattery)
October 27, 2009
Speaker: Robert
Bernstein,
Fermilab
http://mu2e.fnal.gov/
Title: "A New Charged Lepton Flavor Violation
Experiment:
Muon to Electron Conversion at Fermilab"
Abstract
The Mu2e collaboration will search for coherent, neutrino-less
conversion of muons into electrons in the field of a nucleus
with a
sensitivity improvement of approximately 10,000 over existing
limits.
Such a lepton flavor-violating reaction probes new physics at
a scale
unavailable by direct searches at either present or planned
high energy
colliders. The physics motivation for Mu2e and the design of
the muon
beamline and spectrometer will be presented, along with a
scheme by
which the experiment can be mounted in the present Fermilab
accelerator
complex. We will also examine the prospects for increased
sensitivity
of as much as two orders-of-magnitude at the proposed Fermilab
Project
X Linac.
Nov. 3, 2009
Speaker: Prof. Jay Hubisz, Syracuse
http://physics.syr.edu/~jhubisz/Site/Syracuse_Personal_Page.html
Title: Revealing Randall-Sundrum Hidden Valleys
Abstract:
Hidden Valley models, in which light hidden sector fields are
accessible in collider experiments only through high-scale
dynamics,
are of particular interest to both theorists and
experimentalists in
the LHC era, and models which utilize the Randall-Sundrum (RS)
geometry
for obtaining natural electroweak symmetry breaking abound in
the
literature. In this talk, I will make the case that such
RS
models can generically produce the collider features of Hidden
Valley
models, and present a model in which a RS hidden sector is
responsible
for solving the strong-CP problem.
Nov. 10, 2009
Speaker: Micheal Berger, Indiana
(CANCELLED)
http://physics.indiana.edu/~berger/aboutme.html
Title: Lorentz Violation in Top Quark Production and Decay
Abstract:
I will give an introduction the consideration of Lorentz and
CPT
violation in the context of effective field theories. The
Lorentz-violating Standard Model Extension captures many
possible
sources of spacetime symmetry violation, and allows for
quantitative
comparisons between different experiments. In particular,
bounds can be
obtained from collider experiments. I will present the results
of a
calculation of the effects of Lorentz and CPT violation on the
production and decay of top quarks in hadron colliders. The
scattering
cross section depends on the orientation of the colliding
beams which
implies that expected signals should display a sidereal time
dependence
arising from the rotation of the Earth.
Nov. 17, 2009
Speaker: Prof. Lee G.
Sobotka
Department of Physics and Department of Chemistry,
Washington
University in St. Louis
http://www.chemistry.wustl.edu/lee_sobotka
Title: Studies of a) Correlations, b) Continuum structure and
c) the
Caloric Curve of God’s Quantum Dots
Abstract :
Our group has spent the last few years investigating the
evolution of
correlations in atomic nuclei with neutron-to-proton ratio and
excitation. By invoking causality (via the standard
Kramers-Kronig
relations), we are able to link bound-state information and
scattering
data. The dispersion that results from such a model leads to
several
important findings. Protons (in Ca) become less
“single-particle like”
as the excess of neutrons (the other “sex”) is increased.
There is a
peak (enhancement) in the effective mass on the surface that
explains
why the experimentally observed many-body density of states is
larger
than single-particle models would lead one to expect. Finally,
the
demise of this enhancement to the effective mass, and thus
DOS, with
excitation energy, induces a plateau in the nuclear Caloric
Curve. A
few highlights of our recent work using “continuum
spectroscopy” of
light nuclei with exotic neutron-to-proton ratios will also be
presented. We have found an exited state of 10C that to a
large extent
decays by emitting 2 correlated protons and a correlation
between p +
8He that indicates a resonance in 9Li which is likely the
“analog” of
the ground state of 9He
Nov. 24, 2009
Speaker: Prof. Simon Catterall, Syracuse
http://physics.syr.edu/faculty/catterall.html
Title: Exact Lattice Supersymmetry
Abstract:
Recently, new theoretical ideas have allowed the construction
of
lattice actions which are explicitly invariant under one or
more
supersymmetries.
These theories are local and free of fermion doublers and in
the case
of Yang-Mills theories also possess exact gauge invariance. In
this
talk these ideas are reviewed with particular emphasis being
placed on
N = 4 super Yang-Mills theory and applications to the AdS/CFT
correspondence.
Dec. 1, 2009
Speaker: Teresa Montaruli,
University
of Wisconsin, Madison
http://www.icecube.wisc.edu/~tmontaruli/
"Searching for extraterrestrial high energy neutrinos"
Abstract
I will review the search for astrophysical neutrinos and the
status and
results of neutrino telescopes in operation and
decommissioned. I will
describe the
methods used for data analysis, and background discrimination.
I will
give emphasis to recent results of IceCube and ANTARES. I will
interpret these
results and consider their impact on theoretical predictions
of
neutrino fluxes correlated with measurements using other
messengers,
specifically gammas
and ultra-high energy cosmic rays.
Dec 8, 2009 No seminar (Arie out of town)
http://www.pas.rochester.edu/~ksmcf/.plan.txt