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Damgov awarded 2017 CMS-LPC Distinguished Researcher Fellowship

Jordan Damgov
Jordan Damgov, a high energy physics postdoc, was awarded the LPC Distinguished Researcher Fellowship in 2017 for his analysis work on search for heavy resonances in semileptonic di-boson final states in CMS. The 21 colleagues selected as CMS LPC Distinguished Researcher are accomplished individuals at different stages of their career. This program provides resources to help strengthen and expand their research programs. Funding for the program is made possible by the CMS Center at Fermilab, the USCMS Research Program, and a grant from the U.S. Department of Energy. Congratulations Jordan. Learn More

  

Probing Dark Matter with CMS

CC Dijet DM
Searching for Dark Matter (DM) via dijet resonance performed by TTU High Energy Physicists, Dr. Sung-Won Lee, Dr. Shuichi Kunori, and Tyler Wang, Ph.D. student in the High Energy Physics group, and other physicists at CMS experiment, has been highlighted in the top news on the Oct. issue (Volume 56, Issue 8) of the CERN Courier, entitled 'Probing dark matter with CMS'. CMS has recently updated several of DM searches and placed stringent constraints on interesting DM parameter space. Particularly, dijet constraints placed significant bounds on the simplified DM model. The preliminary results on 95% CL exclusion regions in the mass plane of the mediator and DM candidate for dijet searches and mono-X searches. 

 

 

Britt, Maccarone Find Middle-of-Nowhere Star

Chris Britt and Tom Maccarone, TTU
Chris Britt, Postdoctoral Researcher, and Tom Maccarone, Associate Professor, both of the Department of Physics & Astronomy, have published a study on CX330 in the Monthly Notices of the Royal Astronomical Society. The two headed a research team in identifying what lead author Britt says is likely a rapidly growing young star. The object, called CX330, is unusual for its middle-of-nowhere location in the universe; young stars typically form from gas- and dust-rich regions in star-forming clouds, according to a July 27 Texas Tech Today story about CX330. However, the story said, it is possible that other stars may be near CX330 but have yet to be detected.

 

 

Zhelyeznyakov Receives Goldwater Honorable Mention

Zhelyeznyakov
Max Zhelyeznyakov, a physics major in the Departmentof Physics & Astronomy, was one of 256 applicants to receive an Honorable Mention in the Goldwater Scholarship awards. Zhelyeznyakov plans to earn a doctorate in applied physics and pursue research in optics while teaching at a university.

 

 

Maccarone's Idea Leads to Black Hole Discovery

Tom Maccarone
Tom Maccarone developed the idea that some black holes could be found by searching for radio waves, rather than relying only on conventional searches by X-rays. These results appear in a paper in The Astrophysical Journal. The article went on to say that astronomers combined data from NASA's Chandra X-ray Observatory, the Hubble Space Telescope and the National Science Foundation's (NSF) Karl G. Jansky Very Large Array (VLA) and concluded that peculiar source of radio waves, dubbed VLA J2130+12, is a binary star system in the Milky Way that contains a low-mass star and a black hole. Learn More in a Texas Tech Today article.

 

 

Lee Publishes First New CERN Research

Sung-Won Lee, Particle Physicist, Texas Tech University
Sung-Won Lee, Associate Professor in the Department of Physics & Astronomy, and his research group have published the first search to come from the 2015 re-start of the Large Hadron Collider (LHC) at CERN. Findings, published in the Feb. 18, 2016, Physics Review Letters, were based on data resulting from collisions conducted at the record-breaking energy of 13 TeV (13 trillion electron volts), an energy level 60 percent higher than collisions conducted during the previous run between 2010 and 2012. According to an article in Fermilab News, Lee's group looked at events where collisions resulted in two energetic jets, so-called "dijet" events, and the mass of the particles produced. While their goal of finding new physics remains elusive, Lee's group was able to put one of the most stringent limits yet on the reigning theory of particle physics. That paves the way for predicting, and eventually proving, the existence of new particles.

 

 Physics Team Confirms Gravitational Waves

Six Department of Physics & Astronomy researchers were members of the team that discovered gravitational waves, thus confirming one of Einstein's theories. Physics team members: Professor Benjamin Owen, Assistant Professor Alessandra Corsi, and Postdoctoral Researchers Santiago Caride, Robert Coyne, Ra Inta, and Nipuni Palliyaguru.

 

 

CMS Bridges the Gap in Jet Measurements

CC 2.76 Jet
The work performed by TTU High Energy Physicists, Dr. Sung-Won Lee, Dr. Igor Volobouev, and Terence Libeiro, Ph.D. student in the High Energy Physics group have an article featured in the top news on the Mar. issue (Volume 56, Issue 2) of the CERN Courier, on their important measurement of the inclusive jet cross section in pp collisions at √s=2.76 TeV, entitled 'CMS bridges the gap in jet measurements'. These cross section measurements test and confirm the predictions of QCD and extend the kinematic range compared to previous studies. The final result has been published in May 2016, The European Physical Journal C.

  

 

Looking Forward

Afb
TTU physicists, Dr. Nural Akchurin, Dr. Sung-Won Lee, Dr. Cosmin Dragoiu, a high energy physics postdoc, along with other US physicists, have been featured in Feb 26th edition of the Fermilab This Week concerning their work on the forward–backward asymmetry (Afb) of Drell–Yan lepton pairs in pp collisions at √s=8 TeV. This work has been published in Eur. Phys. J. C 76 (2016)325. Afb has been previously measured by our group (Dr. Efe Yazgan & Youn Roh) using 7 TeV data and published in Phys. Lets. B 718 (2013) 752 . Right after 7 TeV paper, the team worked on improving forward electron identification & energy scale and successfully extended the Afb measurement to larger rapidity (up to |y| = 5) by including electrons in the HF. This is the first-ever CMS measurement, under the high PU environment, using the HF electrons in CMS. 

 

Sell Snaps TIME's Best Space Photo

Paul Sell, Texas Tech University
Paul Sell, Postdoctoral Research Fellow in the Department of Physics & Astronomy, made the list of TIME Magazine's Best Space Photos of 2015, with his image of Circinus X-1, a binary star system. Studying this system could help scientists to better understand how binary star systems behave when the lives of their constituent stars end. This is important because a large percentage of stars live in such systems, rather than living alone like the Sun.

 

  

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