Brad Abbott DOE Review University of Oklahoma Nov 6, 2014

Program Scarlet Norberg: (Graduated Oct 2014) ATLAS – Inclusive Photon Cross Section (Dissertation) – SUSY lepton+  +MET David Bertsche :(Resident at CERN) ATLAS – Optobox – W+prompt J/  Othmane Rifki: (Argonne graduate fellow) ATLAS – RoiB – SUSY D0 J/  + X, Z b (10610) and Z b (10650) search

3 Reach of Analysis Scarlet Norberg

4 Differential Cross Section in E T Isolation: 7 GeV. Cone size of.4 Kinematic regions:  100 GeV<Pt<1000 GeV  |η (γ)|<1.37 The agreement between NLO calculations in data are good especially at higher p T. The agreement for LO MC  PYTHIA is good  HERWIG underestimates Entering the regime where PDF (gluon) uncertainties are large (pT>700 GeV)! PDF uncertainties dominate Published Phys. Rev. D 89, – Published 24 March 2014

Differential Cross Section in E T Forward Region The agreement between NLO calculations and data are good especially at higher E T. PYTHIA has better agreement than HERWIG Large theoretical uncertainties  (~40% at large pT)

6 Differential Cross Section in  The NLO calculations slightly under estimates the cross section for the lower  bins The agreement between PYTHIA LO MC is the best HERWIG underestimates the differential cross section in  by 20%

8 TeV SUSY analysis Using General Gauge Mediation model for both strong and weak production. Searching for events with a high energy photon, lepton (e or  ) and large MET Using 20.3 fb -1 of 8 TeV dataset Optimization complete Control regions defined Hoping to unblind soon Scarlet Norberg

IBL Detector: Optobox D. Bertsche Custom mini-crate for housing optical modules Need to ensure proper shielding, grounding, cooling, high reliability and environmental tolerance 14 optoboxes have been installed in ATLAS

W+Prompt J/  D. Bertsche

RoIB in TDAQ The Region of Interest Builder (RoIB) is an integral part of the ATLAS detector Trigger and Data Acquisition (TDAQ) chain where the coordinates of the region of interests identified by the first level trigger (L1) are collected and passed to the High Level Trigger (HLT) to make a decision. RoIB Othmane Rifki Every event recorded by ATLAS passes through the RoIB

ATLAS TDAQ in Run 2 RoIB is the first unit that sees the L1 output and makes it available for the rest of the TDAQ system. Every event recorded by ATLAS passes through the RoIB. RoIB The Region of Interest Builder (RoIB) is an integral part of the ATLAS detector Trigger and Data Acquisition (TDAQ) chain where the coordinates of the region of interests identified by the first level trigger (L1) are collected and passed to the High Level Trigger (HLT) to make a decision. Othmane Rifki

RoIB Evolution Goals: Absorb the RoIB function in the HLT Supervisor (HLTSV). Replace the custom made VME bus system of the RoIB with the RobinNP input PCIe card in the HLTSV. Achieve more than 100 KHz readout rate. Tasks: Test the input/output bandwidth limitation of the RobinNP using a high performance processor. Test the performance of the HLTSV after the installation of the new RobinNP input cards in the HLTSV.

Results Emulation Mode with 12 channelsEmulation Mode with 100 word fragments Rate (KHz) Fragment size (words)Number of channels Rate (KHz) We are able to achieve 100 KHz readout for a fragment of 50 words, the expected size of an RoIB fragment, with 12 channels readout in the internal generation mode of the RobinNP.

1.Search for strongly produced SUSY Run 1: fb -1 arxiv: Exclusion limits on 14 SUSY models and one mUEDarxiv: Final states: – Multiple energetic jets + 2 isolated same sign leptons (electron or muon but no flavor requirement) – Multiple energetic jets + 3 isolated leptons Backgrounds: VV, ttV, ttH, tZ, tttt, VVV+jets, hadrons mis-identified as leptons, leptons from heavy-flavor decays, electron from photon conversions, electron charge mis-measurement. (V = W,Z) Othmane Rifki

1.Search for strongly produced SUSY Expected sensitivity in run II for gluinos:

X/Y(4140) August 2009: Search by Belle in same channel finds no signal. Limit set on production rate cannot exclude CDF result arXiv: January 2011: CDF updates analysis with larger data set observes X(4140) with 5  arXiv: D0

Latest results D0 finds evidence at > 3  in same decay mode as CDF/LHCb Significance > 5  Published: Phys Rev D 89, (2014)

Z b search Belle reports peaks in  ± Ups(1S,2S,3S) arXiv: Z b1 (10608) and Z b2 (10650) If real, must be exotic states or possibly kinematic effect (CUSP) Preliminary