Graduate's Belle experiment thesis published in Physical Review

Sep 16, 2011 By Thomas Browder
Dr. Himansu Sahoo

Working together with other UH Manoa colleagues on the Belle experiment at the KEKB factory in Tsukuba, Japan, postdoctoral researcher Himansu Sahoo first reported the first observation of a new type of rare "penguin decay" of the beauty quark and measured its matter-antimatter symmetry violation parameters. Sahoo is a recent Physics and Astronomy Department Phd graduate.

In beauty quark and other radioactive decays observed to date, the interactions responsible for the decay violate and are left-handed. Sahoo's paper establishes a new method for searching for right-handed currents from physics beyond the that will be used in future very high experiments. The results will be published in the October 2011 issue of Physical Review D Rapid Communications, a leading United States physics journal. Sahoo is the first author of this paper, which was the basis for his Phd dissertation at UH Mānoa.

B Factories are high energy particle accelerators that produce particles containing b (beauty) quarks in large numbers, over 100 million/year. The Belle experiment at KEKB is most celebrated for its critical role in experimentally verifying the theoretical scheme for matter-antimatter asymmetry of Kobayashi and Maskawa, who were awarded the 2008 Nobel Prize in Physics.
 
Other UH Mānoa participants in the Belle experiment include faculty members Tom Browder, Mike Peters, Sven Vahsen, Gary Varner, research professor Michael Jones, postdoctoral fellows Igal Jaegle, Kurtis Nishimura, Jared Yamaoka, engineers Matt Andrew and Marc Rosen, graduate students Jamal Rorie and Tom Thorpe and visiting professor Roberto Mussa. The work in the Belle experiment, an international collaboration of physicists from countries in Asia, America, Europe and Australia, is supported by the United States Department of Energy. The University of Hawai‘i group is also constructing the iTOP particle identification detector for the Belle-II experiment for the Super-KEKB factory upgrade that will start operation in fall of 2014 in Tsukuba, Japan.

Explore further: Using antineutrinos to monitor nuclear reactors

More information: The paper can be accessed online at: arxiv.org/abs/1104.5590

Provided by University of Hawaiʻi at Mānoa

4 /5 (2 votes)
add to favorites email to friend print save as pdf

Related Stories

Physicists testing Nobel-winning theory

Nov 13, 2008

(PhysOrg.com) -- Soeren Prell and a team of Iowa State University researchers are part of an international research team testing a theory that led to a share of the 2008 Nobel Prize in Physics for Japanese researchers Makoto ...

Particle oddball surprises physicists

Mar 18, 2009

(PhysOrg.com) -- Scientists of the CDF experiment at the Department of Energy's Fermi National Accelerator Laboratory announced yesterday that they have found evidence of an unexpected particle whose curious ...

Will the real Higgs Boson please stand up?

Aug 11, 2011

Although physicists from two experiments at CERN's Large Hadron Collider and from Fermilab’s Tevatron collider recently reported at the Europhysics Conference on High Energy Physics that they didn't find ...

Recommended for you

Using antineutrinos to monitor nuclear reactors

5 hours ago

When monitoring nuclear reactors, the International Atomic Energy Agency has to rely on input given by the operators. In the future, antineutrino detectors may provide an additional option for monitoring. ...

Imaging turns a corner

9 hours ago

(Phys.org) —Scientists have developed a new microscope which enables a dramatically improved view of biological cells.

Mapping the road to quantum gravity

23 hours ago

The road uniting quantum field theory and general relativity – the two great theories of modern physics – has been impassable for 80 years. Could a tool from condensed matter physics finally help map ...

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

hush1
not rated yet Sep 16, 2011
Deviations from SM predictions is NP. I'm sidelined/benched.
apkrishna
not rated yet Sep 22, 2011
Congratulation to Dr Hinmamshu Sahoo. Just curiosity - is it the same Sahoo who brought gold medal for India in Physics Olympiad few years ago? In any way, let his work reveal new exciting things of the nature and bring Nobel.

More news stories

Phase transiting to a new quantum universe

(Phys.org) —Recent insight and discovery of a new class of quantum transition opens the way for a whole new subfield of materials physics and quantum technologies.

A 'quantum leap' in encryption technology

Toshiba Research Europe, BT, ADVA Optical Networking and the National Physical Laboratory (NPL), the UK's National Measurement Institute, today announced the first successful trial of Quantum Key Distribution ...

When things get glassy, molecules go fractal

Colorful church windows, beads on a necklace and many of our favorite plastics share something in common—they all belong to a state of matter known as glasses. School children learn the difference between ...

Autism Genome Project delivers genetic discovery

A new study from investigators with the Autism Genome Project, the world's largest research project on identifying genes associated with risk for autism, has found that the comprehensive use of copy number variant (CNV) genetic ...

Study links California drought to global warming

While researchers have sometimes connected weather extremes to man-made global warming, usually it is not done in real time. Now a study is asserting a link between climate change and both the intensifying California drought ...