'Qcd background' presentation slideshows

Hunting the invisible at the LHC

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H ?bb results of the Atlas & CMS experiments Tristan du Pree ( FNRS & CP3-UCLouvain)

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A.N.Skachkova, N.B.Skachkov (JINR, Dubna)

QCD at intermediate energies: Multimuon production and double parton interactions at PANDA. A.N.Skachkova, N.B.Skachkov (JINR, Dubna). 2-nd PANDA Russia workshop 26-28 April 2010, IHEP. I. Antiproton beam with E beam < 15 GeV may provide an interesting information

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GRAVITATIONAL RADIATION IN ULTRAPLANCKIAN COLLISIONS

GRAVITATIONAL RADIATION IN ULTRAPLANCKIAN COLLISIONS. Theodore Tomaras University of Crete. 7 th Crete Regional Meeting on String Theory Kolymbari , 16-23 June 2013 . OBSERVATION: About 12% initial-state energy losses in e+e - collisions at Z 0

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W Charge asymmetry

W Charge asymmetry. Cigdem Issever, Adam Scott, and David Stuart UCSB. Preblessing, EWK 5/13/04. CDF Note 6282, Measurement of W ? e n Charge Asymmetry CDF Note 6108, Alignment of the Plug Calorimeter CDF Note 6412, QCD Background for Plug Ws. Motivation.

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ATLAS ???????????

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Update on the Diphoton + MET Analysis

Update on the Diphoton + MET Analysis. Bruce Schumm, channeling Ben Auerbach (Argonne), Osamu Jinnouchi (Tokyo Tech), Susan Fowler (Penn) UC Santa Cruz / SCIPP 6 March 2014 SUSY General Analysis Meeting. Conference Note public in early January:

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??????????? ATLAS

??????????? ATLAS. ??????? ?????? ??????? ?????? ???? ???? 2 3 - 26 ??????? 201 3 ???? ???? ?????. LHC shutdown LS1. LHC back for physics in April 2015 with most probably 13 TeV , i.e. 1.6 times enlarged energy. ATLAS LS1 activities: repair and revision of all ATLAS sub-systems.

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Z electron + ? Jet Search.

Z electron + ? Jet Search. Joshua Swanson. Details. Dataset: /Ztautau/Summer08_IDEAL_V11_redigi_v2/GEN-SIM-RECO CMS Version: CMSSW_2_2_13_HLT. Analysis done using PAT v2 and PF2PAT. Analysis normalized to luminosity of 1 fb -1. Background. Major sources of background for Z->e+? jet.

306 views • 23 slides

GRAVITATIONAL BREMSSTRAHLUNG IN ULTRA-PLANCKIAN COLLISIONS

GRAVITATIONAL BREMSSTRAHLUNG IN ULTRA-PLANCKIAN COLLISIONS. Theodore Tomaras University of Crete. 1. MOTIVATION. About 12% energy losses in e+e - collisions at Z 0 ( Altarelli , Martinelli , 1986) . Reasonable expectation :

346 views • 22 slides

Status of diffractive Higgs studies

Status of diffractive Higgs studies. Marta, Monika, Michele. -jet. gap. gap. H. h. p. p. -jet. b. b. H. Khoze Martin Ryskin Eur. Phys.J. C23, 311 (2002) C25, 391 (2002) C26, 229 (2002). t. b. b. b. H. b. Exclusive diffractive Higgs @ LHC.

311 views • 21 slides

Diphoton + MET Analysis Update

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Double proton tagging at the LHC

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QCD background for studies with SIMDET

QCD background for studies with SIMDET. A De Roeck CERN A few technical comments. QCD background. The QCD background in a ?? collider can be large Eg. for L geom ~ 10 35 cm -2 s -1 , 400 nb ?? cross section ? 3 ?? events/bunch crossing

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Update on Pileup

Update on Pileup. Ken Johns, Venkat Kaushik, Xiaowen Lei, Mario Aletti (U. Arizona). Electron + Jets Channel (tT). Muon + Jets Channel (tT). W (e) + 4 Jets Channel. W (mu) + 4 Jets Channel. Other Studies in Progress. Process remaining W+jet pileup samples for completeness

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Top to stop data analysis update

Top to stop data analysis update. Outline. w+jets cross sections QCD background estimate A new optimization results (w->enu)+4jets: 3.1+-1.4 (pb) from CDF paper PRD 63 (2001)072003 (w->munu)+4jets: 3.1+-1.4 (pb) branching ratio is the same as above

151 views • 4 slides