Bulletin of the American Physical Society
Fall 2015 Joint Meeting of the Texas Section of the AAPT, Texas Section of the APS and Zone 13 of the Society of Physics Students
Volume 60, Number 15
Thursday–Saturday, October 29–31, 2015; Waco, Texas
Session C4: High Energy Physics I |
Hide Abstracts |
Chair: Jay Dittmann, Baylor University Room: A.207 |
Friday, October 30, 2015 10:45AM - 10:57AM |
C4.00001: Track Based Alignment of the CMS Muon Detectors in Run II Yuriy Pakhotin, Aysen Tatarinov, Luca Pernie, Teruki Kamon, Alfredo Castaneda, Alexei Safonov The muon detectors of the CMS experiment provide fast trigger decisions, muon identifications and muon track measurements needed for reconstructing the momentum of high p$_{T}$ muons. Accurate measurements of high momentum muons will be important for probing new physics in the newly ongoing run II of the LHC. A track-based alignment procedure for the CMS muon chambers and a discussion of the current status of data based Muon Alignment is presented. [Preview Abstract] |
Friday, October 30, 2015 10:57AM - 11:09AM |
C4.00002: Performance of the Prototype Readout System for the CMS Endcap Hadron Calorimeter Upgrade Nathaniel Chaverin, Jay R. Dittmann, Kenichi Hatakeyama, Nathaniel Pastika The Compact Muon Solenoid (CMS) experiment at the CERN Large Hadron Collider (LHC) will upgrade the photodetectors and readout systems of its barrel and endcap hadron calorimeters (HCAL) through the second long shutdown of the LHC in 2019-20. A major milestone for the project was a highly successful testbeam run at CERN in August 2015. The testbeam run served as a full integration test of the electronics, allowing a study of the response of the preproduction electronics to the true detector light profile. It also provided an opportunity to test the light yield of various new plastic scintillator materials. The design of this new system and its performance in the testbeam are presented. [Preview Abstract] |
Friday, October 30, 2015 11:09AM - 11:21AM |
C4.00003: Commissioning of SUSY searches with multi-jets and large missing transverse momentum with the first 13 TeV data Ahmad Borzou The large hadron collider started to deliver proton-proton collisions at 13 TeV starting this year, and this enhances discovery sensitivities of signals expected from Supersymmetry (SUSY). For SUSY searches in the final states including multi-jets and large missing transverse momentum, the accurate standard model background determination is a key, and dominating backgrounds are typically estimated using data. In this talk, I will discuss comparisons of key observables between simulation and first data taken at a centre-of-mass energy of 13 TeV as well as the validation of several background estimation methods with this early data set. [Preview Abstract] |
Friday, October 30, 2015 11:21AM - 11:33AM |
C4.00004: Search for Supersymmetry in Dilepton Final States with energetic Two-jets in Vector Boson Fusion-like Topology Using dedicated VBF trigger in the CMS Detector at the LHC Ali CELIK A search of supersymmetry using Vector Boson Fusion tagged jets is presented using 20 fb$^{-1}$ of data from proton-proton collisions at center of mass energy of 8 TeV, collected by the CMS detector in 2012. Final states containing at least two leptons are expected in pair production of charginos and neutralinos. We will repeat the same analysis for the 13 TeV data by using dedicated VBF trigger which is well-suited for this analysis since it has large signal acceptance and allows us to decrease lepton $\textit{p}$$_{T}$ that might be particularly useful in searching for compressed spectra where small $\textit{p}$$_{T}$ leptons are a key signature. [Preview Abstract] |
Friday, October 30, 2015 11:33AM - 11:45AM |
C4.00005: Heavy-quark mass treatment for deep inelastic scattering at N3LO level Keping Xie, Bowen Wang, Pavel Nadolsky We apply Intermediate-mass (IM) scheme to the inclusive massive quarks production through neutral current deep inelastic scattering (DIS) at 3-loop level (N3LO). In IM scheme, we treat the heavy-quark with realistic heavy-flavor quark kinematics combining with zero-mass (ZM) hard cross section formalism. The result presented here can be extended to the general-mass (GM) factorization scheme calculations when the N3LO mass-dependent DIS matrix elements come out. This generic implementation can be used in the predictions for Higgs, and W and Z cross sections measured at the LHC. [Preview Abstract] |
Friday, October 30, 2015 11:45AM - 11:57AM |
C4.00006: Mathematica Package for Accessing and Manipulating PDFs for New Physics Searches Eric Godat With the LHC Run 2 data fast approaching, the search for new particles is in full swing and with that comes the need to improve our ability to distinguish these potential new signals from existing uncertainties. Parton Distribution Functions (PDFs) are a tool used to improve these uncertainties by bridging the gap between theoretical predictions and experimental data. Here we provide a set of Mathematica packages that include an assortment of tools for utilizing PDFs in these searches for new physics. This software is capable of performing PDF calculations in a Mathematica environment and incorporates sets from several collaborations including the recent LHAPDF6 formatting. A few examples of the package applications will also be demonstrated. [Preview Abstract] |
Friday, October 30, 2015 11:57AM - 12:09PM |
C4.00007: META parton distribution functions Pavel Nadolsky, Jun Gao, Joey Huston I present a general method for computation of uncertainties in parton distribution functions based on meta-parametrizations. The method streamlines combination of PDF uncertainties from various groups (CTEQ, MMHT, NNPDF) in collider applications such as production of Higgs bosons and new physics searches. A new recommendation by the PDF4LHC group for computation of PDF uncertainties in LHC applications using combined PDF sets will be reviewed. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700