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[Recent Articles in Phys. Rev. D] Phys. Rev. D 80, 015014 (2009): Bhattacharya et al. - Quark ...: Satyaki Bhattacharya, Sushil Singh Chauhan, Brajesh Chandra Choudhary, and Debajyoti Choudhury Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India. Received 25 January 2009;

[Scientific Blogging] Energy Calibration of B-Jets: Part II: The idea is that if one manages to select Z+gamma events -Z boson production when the Z recoils against a high-energy photon- with the Z decaying to b-quark jets, the calibration of the b-JES becomes a child trick, since the system is kinematically over-constrained by the very well-measured transverse energy of the photon. The trick is that Z->bb +gamma events do not suffer from the usual background of Z->bb events, because the requirement of the additional photon automatically kills all initial states with gluons in the QCD background -and those are the largest source of background.

[PRC Editor Selections] Phys. Rev. Lett. 103, 032302 (2009): Zhang et al. - Tomography of ...: 2Key Laboratory of Quark and Lepton Physics (Huazhong Normal University), Ministry of Education, Wuhan 430079, China 3Physics Department, Florida State University, Tallahassee, Florida 32306-4350, USA 4Nuclear Science Division, .Because of the sharp falloff of the γ-jet spectrum in momentum imbalance pTjet-pTγ>0 in NLO PQCD, hadron spectra at large zT=pTh/pTγ≳1 are more susceptible to parton energy loss and therefore are dominated by surface emission of γ-associated .

[Scientific Blogging] A Retractatio on the Lepton Jets Affair: I should remind everybody that the CDF paper solves some important inconsistencies of past measurements of b-quark cross sections and phenomenology at the Tevatron. Those achievements will stay regardless of what is the source of the muon excess described in the paper, be it BSM physics, nuclear interactions, or simulated events inserted overnight in the data.

[Recent Articles in Phys. Rev. D] Phys. Rev. D 80, 013007 (2009): Keung and Petriello - Electroweak ...: This production mode contributes to the current Tevatron exclusion limit of the standard model Higgs with .We consider the deviations from commonly used approximations for the Higgs boson transverse momentum spectrum caused by the finite top-quark mass, bottom-quark contributions, and electroweak gauge boson terms.

[Scientific Blogging] The Slides of my Seminar for LHCb - Part I: I have in the pipeline a simpler article than the present one, where I explain why b-quark jets are special, and what makes them so important at hadron colliders (it is all about the Higgs, the top quark, and new physics searches, .

[Recently Updated Graduate Information in Business on Petersons.com] Ohio University, Department of Physics and Astronomy - Program ...: At lower energies, faculty members are directing research programs in several distinct areas, including fundamental symmetries in nuclear reactions via precision tests of charge symmetry breaking at TRIUMF in Canada, exotic nuclei far from the line of stability at GANIL and the Hahn-Meitner Institute in Europe, measurements of neutron cross sections at Los Alamos in New Mexico, studies of nuclear level densities at the Holifield Radioactive Ion Beam Facility in Tennessee, and studies of pion photoproduction and QCD sum rules with the LEGS facility at Brookhaven National Laboratory in New York. The Department also operates the high-intensity Ohio University Tandem Van de Graaff accelerator with its unique beam swinger magnet and long flight path for high-precision measurements of various nuclear cross sections and projects in medical physics.

[Recent Articles in Phys. Rev. D] Phys. Rev. D 79, 114024 (2009): Belghobsi et al. - Photon-jet ...: The pointlike coupling of the photon to quarks is responsible for the well-known anoma2 lous behavior of D =k ðz; MF à , roughly as em = s ðMF à , when the fragmentation scale MF , chosen of the order of a hard scale of the subprocess, .

[Scientific Blogging] Hadronic Dibosons Seen. Next Stop: the Higgs!: In order to find decays of vector boson pairs the authors of the analysis -Gene Flanagan (Purdue University), John Freeman (FNAL), Alexandre Pranko (FNAL), and Vadim Rusu (FNAL) decided to completely overturn the usual strategy by means of which leptonic decays of vector bosons are found -the prerequisite which is the necessary first step before one can go on to search a second, hadronic vector boson signal in the selected events. While for that first step one usually relied on datasets containing a well-identified, high-energy electron or muon, the CDF authors totally ignored these final state particles.

[symmetry breaking] symmetry breaking » Blog Archive » Fermilab collider experiments ...: “Observation of the single top quark production is an important milestone for the Tevatron program,” says Dennis Kovar, associate director of the DOE Office of Science for High Energy Physics. ”The highly sensitive and successful analysis is an important step in the search for the Higgs.”

[Scientific Blogging] HERA's Intriguing Top Candidates: The figure is a bit too technical for the level of this post, but in summary what is plotted is the value of two "anomalous couplings", numbers which parametrize the possibility that the Standard Model needs to be extended with interactions connecting a flavor-changing quark line with a photon (on the horizontal axis) or with a Z boson (on the vertical axis). The name of the game is restricting these two parameters to be as close as possible to zero -zero being the prediction for the Standard Model: no FCNC interactions.

[Not Even Wrong] This Week's Hype « Not Even Wrong: in an apparent bid to make Peter Woit’s head explode. The release itself is really pretty awful, with poorly explained and irrelevant pictures, and a [...]

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