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NPP Seminar by Andrea Albert (SLAC)

October 29th, 2013 by geurts

Date: Tuesday November 5, 2013 at noon
Location: 223 Herman Brown Hall, Rice University

Title: Indirect Searches for Dark Matter with the Fermi Large Area Telescope
Speaker: Andrea Albert (SLAC)
Abstract:
There is overwhelming evidence that non-baryonic dark matter
constitutes ~27% of the energy density of the universe.  Weakly
Interacting Massive Particles (WIMPs) are promising dark matter
candidates that may produce gamma rays via annihilation or decay
detectable by the Fermi Large Area Telescope (Fermi LAT).  A detection
of WIMPs would also indicate the existence of physics beyond the
Standard Model.  I will present recent results from indirect WIMP
searches by the Fermi LAT Collaboration.  I will also give a detailed
presentation of the recent Fermi-LAT Collaboration search for spectral
lines, including a discussion of what we found when investigating the
reported tentative signal in the Galactic center at 130 GeV.


UH Physics Colloquium by Matt Luzum (LBNL)

October 25th, 2013 by geurts

On October 29 at 4pm   Matt Luzum (LBNL) will give a physics colloquium at UH.

UH Colloquia are scheduled on Tuesdays at 4:00pm in SR1 room 634.

 



NPP Seminar by Matt Luzum (LBNL)

October 24th, 2013 by geurts

Date: Wednesday Oct.30, 2013 at noon
Location: 223 Herman Brown Hall, Rice University

Title: Hot Quark Soup: Viscosity, Flow and Flow Fluctuations in Relativistic Heavy-Ion Collisions
Speaker: Matt Luzum (LBNL)
Abstract:
Relativistic heavy-ion collisions probe the properties of extremely
high temperature matter (~10^12 degrees), where there is expected to
exist a new phase of matter called the Quark-Gluon Plasma.  These
experiments indicate the presence of a medium that behaves as a
strongly-coupled, almost-perfect fluid.  I review some of the key
results that indicate this strong collective behavior, and outline the
current progress toward quantifying properties of the system, such as
the shear viscosity of the Quark-Gluon Plasma


STAR MTD/Endcap TOF Workshop (Nov. 20-22, 2013)

October 23rd, 2013 by geurts

Bonner Lab will host the STAR MTD/eTOF Workshop on Nov. 20-22, 2013.

The Muon Telescope Detector (MTD) is expected to be fully installed and commissioned for the upcoming RHIC Run 14 (starting Feb.’14). Together with the Heavy Flavor Tracker (HFT) which is also scheduled for operations during that run, the STAR detector will be in an excellent position to significantly improve its measurements on quarkonia, and lower invariant mass dileptons.

The meeting website can be found at this link: MTD/eTOF 2013 Workshop

 



P&A Colloquium by Thomas Schaefer (North Carolina State)

October 17th, 2013 by geurts

On October 23 at 4pm Thomas Schaefer (North Carolina State) will the P&A colloquium at Rice

Title:
NEARLY PERFECT FLUIDITY: From Cold Atoms to Hot Quarks and Gluons
Abstract:
A dimensionless measure of fluidity is the ratio of shear viscosity to entropy density. In this talk I will argue that fluidity is a sensitive probe of the strength of correlations in a fluid. I will also discuss evidence that the two most perfect fluids ever observed are also the coldest and the hottest fluid ever created in the laboratory. The two fluids are cold atomic gases (~10^-6^ K) that can be probed in optical traps, and the quark gluon plasma (~1012K) created in heavy ion collisions at RHIC and the LHC. Remarkably, both fluids come close to a bound on the shear viscosity that was first proposed based on calculations in string theory, involving the non-equilibrium evolution of back holes.

Rice P&A Colloquia are scheduled on Wednesdays at 4:00pm in Brockman Hall for Physics (BRK), room 101.

Graduate students are encouraged to meet the speaker for coffee & cookies between 1h15-2pm in BRK 200.



Bonner Lab Physicists and the 2013 Nobel Prize for Higgs discovery

October 9th, 2013 by geurts

Bonner Lab faculty in CMS (left to right: Profs. Ecklund, Roberts, Li, Geurts, and Padley)

“The 2013 Nobel Prize in physics was awarded Tuesday to theorists Peter Higgs and Francois Englert for their work developing the theory of what is now known as the Higgs field, but the prize is being celebrated by experimental particle physicists at Rice — and thousands like them — who participated in the groundbreaking 2012 discovery of the Higgs particle that led to the Nobel announcement.”

Taken from http://news.rice.edu/2013/10/08/rice-u-physicists-celebrate-nobel-prize-for-higgs-discovery/ 

 

Other related links:

Higgs discovery captures Nobel Prize (youtube video)

   http://www.youtube.com/watch?v=j6MHSB1gfDc

Rice has long history with CERN

   http://news.rice.edu/2012/07/04/rice-has-long-history-with-cern/

Rice physicists help discover new particle that may be Higgs

   http://news.rice.edu/2012/07/04/rice-physicists-help-discover-new-particle-that-may-be-higgs-2/



POSTPONED == NPP Seminar by Ivan Vitev (LANL)

October 7th, 2013 by geurts

The upcoming seminar by Dr. Vitev, scheduled for Oct.15,  is postponed as a result of the recent Federal Government Shutdown.

 



UH Physics Colloquium by Frithjof Karsch (BNL)

September 26th, 2013 by geurts

On Tuesday September 24 at 4pm  Frithjof  Karsch (BNL) will give a physics colloquium at UH on Lattice QCD.

UH Colloquia are scheduled on Tuesdays at 4:00pm in SR1 room 634.

 



NPP Seminar by Jiangyong Jia (BNL)

September 26th, 2013 by geurts

Date: Tuesday October 1, 2013 at noon
Location: 223 Herman Brown Hall, Rice University

Title:  Event-by-Event flow from ATLAS
Speaker: Jiangyong Jia (BNL)
Abstract: In recent years, the measurement of harmonic flow coefficients $v_n$ has provided important insight into the hot and dense matter created in heavy ion collisions at RHIC and LHC. These coefficients are now understood to reflect the hydrodynamic response to the collision geometry in the initial state. This talk present recent ATLAS measurements on correlations between event planes of different orders and event-by-event distributions of $v_n$ in Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$~TeV. These measurements have provided new constraints on the initial geometry fluctuation, and have revealed strong non-linear effects in the hydrodynamic response of the produced medium to the initial geometry.


Who is T.W. Bonner?

September 23rd, 2013 by geurts

T.W. Bonner Nuclear Laboratories Dedication

Today, you can find this dedication stone in the hall way of the T.W. Bonner Lab in the Herman Brown Hall on the 2nd floor. A few decades back, however, this stone marked a dedicated building home to the  T.W. Bonner  Nuclear Laboratories and its Van de Graaff generator. A few pictures from the Rice Archives can be found at this great blog entry in the Rice History Corner.

Tom Wilkerson Bonner had a very close relationship with Rice throughout most of his life, with occasional visits to Caltech, Cambridge, MIT, and the Los Alamos Laboratory. His death on December 6, 1961 was sudden and completely unexpected.

Born in Greenville TX, Tom attended both high school and Southern Methodist University in Dallas. With an initial interest in geophysics, he committed to physics and joined the (at that time) Rice Institute in the early 1930s to work with Prof. H.A. Wilson. After receiving his Master’s degree, and following Chadwick’s discovery of the neutron, Tom decided to study neutrons. With a Rice Ph.D. next, a National Research Fellowsip enabled him to visit Caltech and work with Charles Christian Lauritsen (who in 1967 would receive the T.W. Bonner Prize) and a graduate student building high-pressure cloud chambers.

Shortly before his return to Rice as a physics instructor in 1936, Tom Bonner visited the Europe to meet people like Cockcroft, Rutherford, and Oliphant. While on another visit to Cambridge and later on Madison, a Van de Graaff accelerator was build at Rice. After the war years, during which he worked at MIT Radiation Lab, Tom Bonner returned to Rice and was appointed chairman of the physics department, following Wilson who retired. In what would be his last years, Tom W. Bonner was increasingly recognized for his many contributions and dedication. He was elected a member of the National Academy of Sciences in 1959.

Sources: A very nice biographical memoir of Tom W. Bonner by W.V. Houston can be found at the National Academies Press through the following link. His obituary in Physics Today of February 1962 can be found at the following link