Seminars take place at Newman 311, 4pm (refreshments at 3:45pm), unless announced otherwise.
Where we are now Abstracts and Transparencies | |||
DATE | SPEAKER | INSTITUTION | SEMINAR TITLE |
Thu Sep 9 1:30 | Sheldon Stone | Syracuse | BTeV |
Fri Sep 17 | Nikolay Achasov | Sobolev Institute, Novosibirsk | Non-Heavy-Quark Decay of Heavy Vector Resonances |
Fri Sep 24 | Maury Tigner | Cornell | Linear Collider Technology Choice and Next Steps |
Fri Oct 1 | Vivek Jain | BNL | B Physics at D0: An Update |
Wed Oct 6 1:30 | Bob Cousins, Dan Green, Daniela Bortoletto | UCLA, FNAL, Purdue | The CMS Experiment at the CERN LHC |
Fri Oct 8 | Alain Bellerive | Carleton | What can we learn about neutrinos at SNOLAB |
Tue Oct 12 1:30 | Michael Tuts, Howard Gordon | Columbia, BNL | The Physics ATLAS is Aiming to Discover |
Fri Oct 15 | --- | NO JOURNAL CLUB -- CLEO Meeting | |
Fri Oct 22 | Nicolas Berger | SLAC | BaBar ventures into the non B-physics world : Hadronic physics with ISR and Pentaquark searches |
Fri Oct 29 3:00 pm | Henry Tye | Cornell | Searching for Cosmic Strings |
Fri Nov 5 | Séamus Davis | Cornell | Newly discovered Electronic Crystal State in High-Tc Cuprates: Charge-ordered Insulator or Electronic Supersolid? |
Thu Nov 11 | Aaron Roodman | SLAC | Exploring Penguins: Gluon Loop Diagrams at BABAR |
Fri Nov 19 | (Richard Hughes) | (Ohio State) | RESCHEDULED TO FEB 11 |
Fri Nov 26 | --- | NO JOURNAL CLUB -- Thanksgiving | |
Fri Dec 3 2:00 pm | Vladimir Savinov | Pittsburgh | The Search for New Physics in ATLAS Blind Analysis |
Fri Dec 10 | Stan Wojcicki | Stanford | Long baseline neutrino physics at Fermilab: present and future |
| |||
DATE | SPEAKER | INSTITUTION | SEMINAR TITLE |
Fri Jan 21 | Kamal Benslama | Columbia | A Selection of Exotics with ATLAS |
Fri Jan 28 | Steve Kahn | Stanford | The Large Synoptic Survey Telescope (LSST) |
Wed Feb 2 | Julia Thom | Fermilab | Physics with Lepton Pairs at the CDF Experiment |
Fri Feb 4 | --- | NO JOURNAL CLUB -- CLEO Meeting | |
Tue Feb 8 | Andrei Gritsan | LBNL | B Meson Decays to Vector Particles: a New Window on Fundamental Interactions |
Fri Feb 11 | Ben Kilminster | Ohio State | Upgrading the Track Trigger at CDF for High Instantaneous Luminosity |
Wed Feb 16 | Eva Halkiadakis | Rochester | Precision electroweak and top quark measurements at the energy frontier |
Fri Feb 18 | Tony Readhead | Caltech | The Cosmic Background Imager (CBI) |
Wed Feb 23, Wilson Large | Chris Hill | UC Santa Barbara | New Physics: A View from the Top |
Fri Feb 25 | Christos Touramanis | University of Liverpool | Alpha and Gamma Measurement from Rhopi, RhoRho and DK decays in BaBar |
Mon Feb 28, 2:30 pm | Peter Wittich | U. of Pennsylvania | Measuring Top Quark Cross section with Dilepton Events |
Fri Mar 4 | --- | NO JOURNAL CLUB -- CLEO Meeting | |
Fri Mar 11 | Daniel Kim | SUNY Upstate Medical University | Radiation Oncology Physics from a HEP-ex Reference Frame |
Fri Mar 18 | Kate Scholberg | Duke | Recent Results from Super-Kamiokande |
Fri Mar 25 | --- | NO JOURNAL CLUB -- Cornell Spring Break | |
Fri Apr 1 | Jeff Berryhill | UCSB | Semileptonic, Leptonic and Radiative Decays from BaBar |
Fri Apr 8 | --- | NO JOURNAL CLUB -- CLEO Meeting | |
Fri Apr 15 | (Tom Kinoshita) | (Cornell) | RESCHEDULED TO MAY 27 |
Fri Apr 22 | Chris Walter | Duke | Super-K, K2K and T2K: The Present and Future |
Fri Apr 29, 3:00 PM | Charlie Baltay | Yale | SNAP |
Fri May 6, Wilson Commons, 3:00 PM | Ted Barnes | U. of Tennessee | Exotics and Excited Charmonia at CLEO: Past lessons and new predictions |
Fri May 13 | Brian Foster | Oxford | Heavy-quark production at HERA |
Tue May 17 | Tim Gershon | Tokyo University | Measurement of f3 at Belle, and How CLEO-c Can Help |
Thu May 19 | Peter Kulinich | MIT | The PHOBOS detector at RHIC |
Fri May 20, 2:00 PM | Cheng-Ju Lin | Fermilab | Search for the Flavor-Changing Neutral Current Decays Bs(d)-->m+ m- at CDF |
Tue May 24 | Xiaonan Li | Illinois Inst. of Tech. | BTeV Level 1 Trigger and BES-II DAQ System |
Fri May 27 | Tom Kinoshita | Cornell | Theory of Lepton g-2: Recent Improvement of QED Terms |
Fri Jun 17 | Lauren Hsu | LBNL | Update on KamLAND: Spectral Distortions, Geoneutrinos and More |
Fri Jul 15 | Andreas Kronfeld | Fermilab | Predictive Lattice QCD |
Fri Aug 19 | Steve Gottlieb | Indiana University | Lattice QCD Comes of Age |
September 9
Sheldon Stone, Syracuse University
BTeV
pdf
September 17
Nikolay Achasov, Sobolev Institute, Novosibirsk, Russia
Non-Heavy-Quark Decay of Heavy Vector Resonances
The branching ratios of the decays of the states psi(3770) and
Y(10580) into pi+pi-, KKbar, omega eta, omega eta', K*Kbar + c.c., rho+rho-,
K*K*bar are evaluated. They proceed via real intermediate states DDbar and
BBbar respectively. The sum of calculated branching ratios is 4x10^-3 and
5x10^-3, respectively, assuming the quark-antiquark content of psi(3770)
and Y(10580). The cited values exceed corresponding three-gluon branching
ratios by an order of magnitude.
pdf
(Other talks during this visit:
Lunch talk September 14,
J/psi transitions: photon vs. gluon)
September 24
Maury Tigner, Cornell University
Linear Collider Technology Choice and Next Steps
The work of the international technology recommendation panel
will be reviewed and the next steps towards design of the International
Linear Collider, ILC, will be outlined.
doc1,
doc2, see also Barry Barish's presentation for the ITRP
October 1
Vivek Jain, BNL
B Physics at D0: An Update
Since the start of Run II of the Fermilab Tevatron, the upgraded D0 has
collected close to 500 pb^-1 of of data. Using this data we are
exploring the b-quark sector, especially those topics which are not
accessible at the e^+e^- B-factories, e.g., study of Bs mixing, beauty
baryons, searches for rare B decays, measurements of the various B
hadron lifetimes, B meson spectroscopy, B_c, Upsilon states, etc. This
talk reviews the current status of the D0 B physics program and
prospects for future measurements.
ppt
October 6
Dan Green, FNAL, Bob Cousins, UCLA, and Daniela Bortoletto, Purdue
The CMS Experiment at the CERN LHC
ppt1, pdf1, ppt2, pdf2
October 8
Alain Bellerive, Carleton University
What can we learn about neutrinos at SNOLAB!?
ppt, pdf
October 12
Howard Gordon, BNL and Michael Tuts, Columbia
The Physics ATLAS is Aiming to Discover
The two large detectors for the Large Hadron Collider, ATLAS and
CMS, are designed slightly differently but are aiming at the same physics
discoveries: the source of electroweak symmetry breaking, the search for
large extra dimensions, and/or hopefully something that has been not been
imagined. ATLAS has an excellent calorimeter and a large air core toroid
system for triggering and measuring muons even without the inner tracker.
We discuss the ATLAS discovery potential and outline some areas where
Cornell could make significant contributions. Some examples are in physics
analysis, computing resources, upgrade R&D and the trigger.
ppt, pdf
October 22
Nicolas Berger, SLAC
BaBar Ventures into the non B-physics World : R from ISR and Pentaquark
Searches
Although better known for its B-physics results, the BaBar collaboration
is also making significant contibutions to other domains of hadronic
physics. This talk reviews two such topics : the measurement of hadronic
cross-sections using initial-state radiation and inclusive searches for
pentaquark states. Concerning ISR, recent BaBar measurements for the
cross-section and J/Psi parameters in the 3pi channels will be presented,
as well as a selection of other exclusive final states and an a status
report for an inclusive analysis. Concerning pentaquarks, the talk will
report the results of inclusive searches for Theta+, Xi-- and other
light-quark pentaquark states.
ppt, pdf
October 29
Henry Tye, Cornell University
Searching for Cosmic Strings
Realization of the inflationary universe in string theory suggests
that cosmic strings may be present in our universe. This opens an
observational window to superstring theory. Ways to detect such cosmic
strings is reviewed.
pdf, Keynote Zip file
November 5
High temperature superconductivity appears upon strong hole-doping of the CuO2 crystal planes in the cuprates. But, at low hole-densities, many other unprecedented electronic phenomena are also observed. A 'hidden' electronic state in the mysterious 'pseudogap regime' of the phase diagram at low hole-doping, has been proposed to explain this situation. Scanning tunneling microscopy (STM) studies have played a key role in the search for this state. They reveal that destruction of superconductivity in Bi2Sr2CaCu2O8 (Bi-2122), whether by high magnetic fields (1), by exceeding the critical temperature Tc (2), or by strong underdoping (3), results in a very similar set of effects. These include a checkerboard pattern of quasi-periodic electronic structure modulations (with periods between 4a0 and 5a0). But underdoped Bi-2212 has such strong crystal and electronic disorder at the nanoscale (3,4), that the identity of any 'hidden' electronic state is difficult to discern. Instead, we recently began STM studies of a different cuprate material Ca2-xNaxCuO2Cl2. It is a beautifully simple crystal with only one CuO2 plane in the unit cell and an undistorted crystal structure. Wavefunction imaging STM studies immediately revealed an unprecedented 4a0X4a0 'checkerboard' electronic crystal state (5). I will describe a series of experiments which we have carried out to study the characteristics of this 'checkerboard' state. I will then discuss proposals for the identity of this state, ranging from a charge-ordered insulator to a bosonic 2e supersolid, along with their implication for high-Tc superconductivity.
Séamus Davis, Cornell University
Newly discovered Electronic Crystal State in High-Tc Cuprates: Charge-ordered
Insulator or Electronic Supersolid?
(2) M. Vershinin et al ,Science 303, 1995 (2004).
(3) K. McElroy et al , Cond/mat 0404005.
(4) K.M. Lang et al , Nature 415, 412 (2002).
(5) T. Hanaguri et al , Nature 430, 1001 (2004).
November 11
Aaron Roodman, SLAC
Exploring Penguins: Gluon Loop Diagrams at BABAR
pdf
December 3
Vladimir Savinov, Pittsburgh
The Search for New Physics in ATLAS Blind Analysis
Last year half a million MC events were simulated on
ATLAS for the first Blind Analysis exercise. This
sample mainly composed of various SM backgrounds but
also had some new, non-SM physics processes hidden in
it. A number of ATLAS collaborators searched for these
New Physics processes. Two students and I also searched
for this hidden content - starting from scratch - without
any prior experience with TeV scale physics and ATLAS
physics software. I will present the results of our
findings and what we learned about the physics at LHC
energies in the course of this exciting research project.
pdf
December 10
Stan Wojcicki, Stanford
Long baseline neutrino physics at Fermilab: present and future
ppt
January 21
Kamal Benslama, Columbia
A Selection of Exotics with ATLAS
The considerable center-of-mass energy and luminosity at the LHC will ensure
a discovery reach for new particles which extends well into the multi-TeV
region. ATLAS has carried out many studies of the implications of this
capability for Beyond the Standard Model physics. In this talk, I will focus
on studies involving Extra-Dimensions, Little Higgs, Strong Symmetry
Breaking, Compositeness and new Gauge Bosons. I will also discuss the US
contributions to these activities and present some preliminary physics
studies involving the initial layout detector.
pdf, grad student lunch talk
January 28
Steve Kahn, Stanford
The Large Synoptic Survey Telescope (LSST)
ppt
February 02
Julia Thom, Fermilab
Physics with Lepton Pairs at the CDF Experiment
ps
February 08
Andrei Gritsan, LBNL
B Meson Decays to Vector Particles: a New Window on Fundamental Interactions
Fundamental particles and their interactions are the necessary
building blocks in understanding our Universe, its existence and
evolution. B-factory experiments produce abundant samples of B
mesons to study fundamental interactions. CP-violation measurements
can be represented on the "Unitarity Triangle." One angle of the
triangle is now known to about 5%. The best measurements for the
second angle were expected to come from the simple decay of a B
meson into two pions. Instead, the best measurements have come
from the decay of B mesons into a pair of spin-one resonances,
B->rho rho. Another decay to a pair of vector mesons, B->phi K*
is found to have polarization not consistent with expectations.
Could this be a sign of New Physics? This opens a completely new
approach to CP violation studies and search for new fundamental
interactions.
pdf
February 11
Ben Kilminster, Ohio State
Upgrading the Track Trigger at CDF for High Instantaneous Luminosity
Due to the large number of interactions per beam crossing at the
Tevatron,
and the need to preserve both high Pt top, electroweak, and exotics
physics
as well as low Pt b physics, the Extremely Fast Track trigger (XFT) at
the CDF
experiment is being upgraded to reject tracks by using 3-D tracking
information and
higher resolution timing. The new system, which will be installed and
tested
with minimal interference with the current system, allows CDF to
continue
recording quality data even with luminosities producing 10 interactions
per bunch
crossing.
ppt,
pdf
February 16
Eva Halkiadakis, Rochester
Precision electroweak and top quark measurements at the energy frontier
The W and Z bosons, the top quark, and the yet-to-be-discovered Higgs
boson are the most massive particles in the Standard Model. W and Z boson
measurements are significant probes of the Standard Model and the
prediction of the Higgs boson mass hinges on the precise measurements of
the W boson and top quark masses. I will review the status of a few
electroweak and top quark measurements from the CDF collaboration from the
ongoing Run II of the Tevatron at Fermilab.
pdf
February 23
Chris Hill, UC Santa Barbara
New Physics: A View from the Top.
Ten years after its discovery, the top quark remains
the focus of a substantial research effort at the
currently operating Tevatron experiments. This is
because the top quark, with its large relative mass,
plays a particularly important role in the Standard Model
and many extensions to it. Many top quark measurements
now being performed at the Tevatron are thus sensitive
to new physics. Indeed, this is true of my own recent work
which I will present. In particular, I will discuss a
measurement of the top production cross-section in the
dilepton final state performed at CDF, directly sensitive
to a several supersymmetric hypotheses. I will also discuss
measurements of the mass of the top quark which are
indirectly sensitive to Higgs physics, highlighting a
new technique which I have developed that employs the
mean decay length of the b-hadrons from the top's decay
to infer its mass.
pdf
February 25
Christos Touramanis, University of Liverpool
Alpha and Gamma Measurement from Rhopi, RhoRho and DK decays in BaBar
pdf
February 28
Peter Wittich, U. of Pennsylvania
Measuring Top Quark Cross section with Dilepton Events
Almost ten years ago, the top quark was discovered at the Tevatron
collider at Fermilab. With the small samples acquired at that time,
we knew little about the top quark except that it is surprisingly
massive. Now, we are entering a stage where we are able to study
this quark with large samples and precision measurements. I
describe one of the first such measurements performed at CDF, the
production of top quark pairs that decay into events with two
leptons in the final state.
pdf, ppt
March 11
The major technical goal of the medical specialty of radiation oncology
is spatial optimization of dE/dx deposited inside the human body
from incident particles, in order to biologically destroy diseased tissue.
About 2/3 of the medical physicists in the U.S. are hospital employees in
radiation oncology, their primary responsibilty being to ensure the
accuracy and robustness of radiotherapy systems, processes, and individual
patient treatments. The first part of this talk will provide an overview
of the current state of radiation oncology and the physicist's role
therein; the second part will describe two projects in digital image
processing and computer hardware that have been developed and
implemented by the speaker at University Hospital in Syracuse.
Connections to HEP will be emphasized.
The Grad Student Pizza Lunch will focus on career and professional topics,
including books and ideas that the speaker found to be useful in thinking
about what to do after graduation, and the many transitions involved with
changing from HEP to MeP.
Daniel Kim, SUNY Upstate Medical University
Radiation Oncology Physics from a HEP-ex Reference Frame
March 18
Kate Scholberg, Duke University
Recent Results from Super-Kamiokande
I will review the latest atmospheric neutrino oscillation results from
Super-K and put them in the context of what is now known about
neutrino mass and oscillations. I will then briefly discuss prospects
for the next generation "T2K" (Tokai-to-Kamioka) long baseline
oscillation experiment.
pdf
April 1
Jeff Berryhill, UCSB
Semileptonic, Leptonic and Radiative Decays from BaBar
ppt
April 22
Chris Walter, Duke University
Super-K, K2K and T2K: The Present and Future
In this talk I will review the latest atmospheric neutrino oscillation
results from the Super-Kamiokande experiment, and also the latest
results from the K2K long-baseline neutrino oscillation experiment. I
will discuss the compatibility of the neutrino mixing parameters
determined in the two experiments. Finally, I will address remaining
open questions in neutrino oscillation physics, and the techniques we
will use to address them in the next-generation T2K long-baseline
experiment.
May 6
Ted Barnes, U. of Tennessee
Exotics and Excited Charmonia at CLEO: Past lessons and new predictions
ppt
May 13
Brian Foster, Oxford
Heavy-quark production at HERA
The HERA accelerator produces copious numbers of charm and beauty quarks,
which can be used to study both heavy quark spectroscopy and production
mechanisms, taking advantage of the fact that HERA exhibits aspects both of
a hadron-hadron and a photon-hadron collider. I will review the results from
HERA I, the prospects at the upgraded HERA-II, and look at some of the
first results from the HERA-II running.
ppt
May 17
Tim Gershon, Tokyo University
Measurement of f3 at Belle, and How CLEO-c Can Help
The Belle experiment at the KEK-B asymmetric-energy e+e- collider
has accumulated a large sample of U(4S)->BBbar events,
and the taking of much more data is anticipated.
One of the main objectives of the experiment is the precise measurement
of the angles of the CKM Unitarity Triangle. I will present the status
of the program to measure the angle f3 (also known as g),
and discuss how this will evolve with more data, emphasising the
crucial role of measurements from CLEO-c.
pdf, ps.gz
May 19
Peter Kulinich, MIT
The PHOBOS detector at RHIC
Setup designed for basic study of heavy ion collisions at RHIC will
be described.
Its main components utilize silicon pad detectors with analog read-out.
DAQ system with 50MB/s bandwidth was built using RACEway switching
fabric.
New method of track reconstruction for heavy conditions will be
discussed.
pdf,
sxi
May 20
Cheng-Ju Lin, Fermilab
Search for the Flavor-Changing Neutral Current Decays Bs(d)-->m+ m- at CDF
The flavor-changing neutral current decay Bs(d)-->m+ m-
is one of the most sensitive probes to physics beyond the
Standard Model. The predicted branching ratio in the Standard
Model is on the order of 10^-9; beyond the sensitivity of the
current experiments. However, in many extensions of the Standard
Model, the branching ratio is naturally enhanced by one to three
orders of magnitude and thus would be observable at the Tevatron.
In this talk, I will present the latest CDF analysis searching
for Bs(d)-->m+ m- decays, which yields the most stringent upper
bounds on these braching fractions to date.
pdf
May 24
Xiaonan Li, Illinois Institute of Technology
BTeV Level 1 Trigger and BES-II DAQ System
BTeV experiment was proposed to build a forward collide detector at
the Fermilab Tevatron dedicated to study a broad range of B decays
with high precision. It was planned to begin data taking in 2009.
Unfortunately, BTeV experiment was terminated in February of 2005.
BTeV three-level trigger system was designed to support its physical
goal. An important feature of BTeV trigger system is Level 1 trigger
which performs track and vertex reconstruction for every bunch
crossing and search for evidence of B decays with high efficiency.
This talk will focus on the BTeV Level 1 trigger, its technical
baseline design and some R&D projects.
In addition, the talk will also describe DAQ system briefly for BES-
II experiment at BEPC, Beijing.
ppt
May 27
Tom Kinoshita, Cornell University
Theory of Lepton g-2: Recent Improvement of QED Terms
At present precision of g-2 measurement is 0.5 ppm for muon
and 0.004 ppm for electron. Although the QED $\alpha^4$
term is known more precisely than experiment right now,
it will become necessary to know the $\alpha^5$ term some day,
especially since Gabrielse will anounce a new g-2 value of
electron shortly.
Evaluation of the $\alpha^5$ term involves 9080 Feynman diagrams
for muon ( actually for $a_\mu - a_e$) and 12672 for mass-independent
part of $a_e$.
I will discuss preliminary result for muon and work in progress
for electron.
pdf
June 17
Lauren Hsu, LBNL
Update on KamLAND: Spectral Distortions, Geoneutrinos and More
I will present results from KamLAND that have been released in the past
year. My main focus will be on the second reactor anti-neutrino analysis
and its impact on our current understanding of the neutrino mixing
parameters. I will briefly discuss a second measurement that has been
released recently, the application of KamLAND towards measuring geological
sources of anti-neutrinos. Finally, I will discuss the future of KamLAND
as a reactor anti-neutrino experiment and plans for an ambitious
purification project that will enable KamLAND to detect Be7 solar
neutrinos.
ppt
July 15
Andreas Kronfeld, Fermilab
Predictive Lattice QCD
Recent progress in lattice QCD suggests that realistic calculations are
now possible. I present three results (form factors in semileptonic D
decays, the "decay constant" in leptonic D decay, and the mass of the
B_c meson) of quantities that were not yet well measured when the
calculations were finished, and compare them to measurements made
since.
pdf
August 19
Steve Gottlieb, U. of Indiana
Lattice QCD Comes of Age
The Nobel Prize was recently awarded to David Gross, David Politzer and
Frank Wilczek for the discovery that QCD is asymptotically free. This
property enables us to use perturbation theory to study the theory in
the high energy regime. However, many of the interesting properties of
quarks and QCD, like confinement and flavor mixing, require a
nonperturbative understanding of QCD.
In 1975, Ken Wilson established a nonperturbative approach to QCD using a space-time grid or lattice. Recent advances in the formulation of lattice QCD and in computer power have allowed significant advances. Some recent calculations and their implications will be described. We will also consider what further progress can be expected in the next few years. pdf
Back to top / now