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Physics WG

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Internal link

Status

Last update

Expected b-tagging performance in Run-II vs Run-IB-taggingG. PiacquadioG. PiacquadioCPPM,Freiburg,Iowa,SLAC,UCLContribution Section contributing to IBL paper https://svnweb.cern.ch/cern/wsvn/IBL/ibl_note.pdfFirst draft readyJune 2015
ATLAS+CMS combination of final Run-I Higgs resultsHiggsG. PiacquadioG. PiacquadioMany, from ATLAS and CMSIn preparation  Work ongoing in LHG groupJune 2015

B-tagging in dense environment note

B-taggingG. PiacquadioG. PiacquadioSLAC,Wuppertal,UCLIn ATLAS final approval https://cds.cern.ch/record/1981534?ln=enEnd of ATLAS circulationJune 2015
Performance and Calibration of the JetFitterCharm Algorithm for c-Jet IdentificationB-taggingG. PiacquadioG. Piacquadio SLAC,Yale,UCL

ATL-PHYS-PUB-2015-001

 

https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PUBNOTES/ATL-PHYS-PUB-2015-001/

 

PublicJanuary 2015
Jet substructure at 13 TeV with the early dataJet/ETmissB. NachmanB. NachmanSLAC, University of Geneva  Supporting Documentation: ATL-COM-PHYS-2015-514Forming ed boardJune 2015

MSSM Higgs decaying to b-quarks, produced in association with a b-quark

Higgs
(HSG5) 

C. Malone

Su Dong, C. Malone, G. Piacquadio,
T. Barklow 

SLAC

 

 

Supporting document (draft):
https://cds.cern.ch/record/1647407

work in progress

March 2014

Search for Direct Stop production at 13 TeVSUSYB. NachmanB. NachmanSLAC, CERN, Geneva, Wuppertal, Stockholm, Penn  

Analysis Twiki

Early Run II supporting document: ATL-COM-PHYS-2015-326

preparing for first dataJune 2015

Search for
di-Higgs production in the 4b final state
from pp collisions at s = 8 TeV with the ATLAS detector

 

ExoticsM. KaganM. KaganSLAC, UCL, Amherst, Columbia, Chicago, Nikhef     
Distinguishing Hadronic W and Z bosonsJet/ETmissB. NachmanB. Nachman, A. SchwartzmanSLAC  

Supporting documentation: ATL-COM-PHYS-2014-309

Paper draft: ATL-COM-PHYS-2015-035

Collaboration ReviewJune 2015
Jet Charge measurementStandard ModelB. NachmanB. Nachman, A. Schwartzman, M. SwiatlowskiSLAC, Harvard  

Supporting Documentation: ATL-COM-PHYS-2014-274

Paper Draft: ATL-COM-PHYS-2015-413

EB reviewJune 2015
Colorflow in the SM using top eventsTopB. Nachman,M. SwiatlowskiB. Nachman, A. Schwartzman, M. SwiatlowskiSLAC, Manchester, Harvard CONF on pull reconstruction and performance published; Paper on full measurement coming shortly.

Supporting Documentation: ATL-COM-PHYS-2014-767

Paper Draft: ATL-COM-PHYS-2015-136

In final sign-offJune 2015
Jet Pull PerformanceJet/ETmissB. NachmanB. Nachman, A. Schwartzman, M. SwiatlowskiSLAC, HarvardATLAS-CONF-2014-048  Supporting Documentation: ATL-COM-PHYS-2014-047PublicJuly 2014
SM Higgs to bb searchHiggs
(HSG5) 
G. PiacquadioG. Piacquadio Many

Final paper: JHEP01(2015)069

ATLAS-CONF-2013-079 (2013)

 

Paper on arXiv

https://cds.cern.ch/record/1563235 (old conf note)

2014 (for paper):
ATL-COM-PHYS-2014-051 (general analysis note)

2013 (for conf note):
ATL-COM-PHYS-2013-697 (b-tagging for VH)
ATL-COM-PHYS-2013-465 (general analysis note)

PublicDecember 2014
Neural network based pixel clusteringTracking/PixelG. PiacquadioT. Nelson, G. Piacquadio PiacquadioSLAC, CERNJINST 9 (2014) P09009

A neural network clustering algorithm for the ATLAS silicon pixel detector, JINST 9 (2014) P09009 (http://arxiv.org/abs/1406.7690)

Describes improvement in cluster resolution and ability to split shared clusters by using Neural Network pixel clustering (used in ATLAS reconstruction since beginning of 2012)

Supporting documentation:
https://cds.cern.ch/record/1501928
PublicMid 2014
Continuous b-taggingB-taggingG. PiacquadioG. PiacquadioSLAC, CERN,Genova, Nijmegen,
Barcellona, AS
ATLAS-CONF-2014-XXXCONF NOTE in preparation
Supports the simultaneous calibration of multiple working points, including correct propagation of correlated uncertainties. 

Supporting documentation:
https://cds.cern.ch/record/1644430

EB review
(will go in b-tag paper) 
March 2014
Calibration of b-tagging efficiency in dataB-taggingG. PiacquadioG. PiacquadioSLAC
(+ CERN, Nijmegen, Berlin, Stockholm for CONF note) 
ATLAS-CONF-2014-004First ATLAS calibration with uncertainties as low as ~2%, based on novel likelihood method applied on di-lepton ttbar events.

Supporting documentation:
https://cds.cern.ch/record/1538335 (methodology, 2012 EM jets)
https://cds.cern.ch/record/1567111 (calibration on 2011 data) 
https://cds.cern.ch/record/1644568 (calibration on 2012 LC jets) 

 

CONF Note APPROVED
(will go in b-tag paper) 
February 2014
RPV Multijet SUSY

SUSY

M. Swiatlowski

Max Swiatlowski, Ariel Schwartzman

SLAC, UChicago, Adelaide

http://arxiv.org/abs/1502.05686

First limits on gluino-neutralino cascades in RPV models!

ATL-COM-PHYS-2014-073

Finished

Feb 2015

Pileup Jet Corrections

Jet/ETMiss

P. Nef

Pascal Nef, Ariel Schwartzman, Max Swiatlowski

Oxford, Lund, DESY

ATLAS-CONF-2012-064 for 2011 results, ATLAS-CONF-2013-084 for 2012 results

ATLAS-CONF-2013-083ATLAS-CONF-2012-064

 

More work in progress

July 2013

Pileup Jet SuppressionJet/ETmissP. NefPascal Nef, Ariel SchwartzmanSLAC

ATLAS-CONF-2014-018

ATL-PHYS-PUB-2014-001 (superseded)

ATLAS-CONF-2014-018

ATL-PHYS-PUB-2014-001 (superseded)

 2014 CONF note approved May 2014

JES Determination and Uncertainties

Jet/ETMiss

M. Swiatlowski

Max Swiatlowski, Ariel Schwartzman

many

ATLAS-CONF-2012-171

ATLAS-CONF-2012-171

 

 

Paper draft in progress

2015

Boosted Top Reconstruction

Jet/ETMiss

M. Swiatlowski

Max Swiatlowski, Ariel Schwartzman

SLAC, Columbia, Yale, UHeidelberg

 

ATLAS-CONF-2013-084

 

Paper forthcoming

August 2013

Jet Substructure Performance

Jet/ETMiss

M. Swiatlowski

Max Swiatlowski, Ariel Schwartzman

SLAC, UChicago, Columbia, Argonne, UCL, UHeidelberg

arXiv 1306.4945

arxiv.1306.4945

 

Published

June 2013

b-tagging in boosted topologies

B-tagging and Jet/ETmiss

M. Kagan

M. Kagan, A. Schwartzman

SLAC, Buenos Aires, NIKEF, Columbia

none yet

none yet

https://indico.cern.ch/conferenceDisplay.py?confId=270837

work in progress

August 2013

Double B-Hadron Tagging

B-tagging

M. Swiatlowski

Max Swiatlowski, Ariel Schwartzman

University of Buenos Ares

ATLAS-CONF-2012-100

 ATLAS-CONF-2012-100

 

2011 CONF Approved

June 2012

Quark-Gluon Tagging

Jet/ETMiss

M. Swiatlowski

Max Swiatlowski, Ariel Schwartzman

SLAC, LBNL, Harvard, Yale

http://arxiv.org/abs/1405.6583

http://arxiv.org/abs/1405.6583, ATLAS-CONF-2012-138

First published paper on q/g tagging at a hadron collider!

ATLAS-COM-PHYS-2013-734

Finished (8 TeV + 13 TeV work ongoing)

May 2014

Q-Jets

Jet/ETMiss

M. Swiatlowski

Max Swiatlowski, Ben Nachman, Ariel Schwartzman

SLAC, University of Washington

ATLAS-CONF-2013-087

ATLAS-CONF-2013-087

 

CONF Note Approved for BOOST 2013

August 2013

Jet Charge (performance)

Jet/ETMiss

B. Nachman

Ben Nachman, Max Swiatlowski, Ariel Schwartzman

SLAC, Duke

ATLAS-CONF-2013-086

ATLAS-CONF-2013-086

https://cdsweb.cern.ch/record/1554095, https://cds.cern.ch/record/1566473

CONF Note approved for BOOST 2013 (August 2013)

August 2013

Jet image processing analysis

Jet/ETmiss

M. Kagan, E. Strauss, J. Cagan

M. Kagan, E. Strauss, J. Cagan, A. Schwarztman

SLAC

ArXiV 1407.5675

http://arxiv.org/abs/1407.5675

http://indico.cern.ch/getFile.py/access?contribId=28&sessionId=6&resId=0&materialId=slides&confId=215704

Published on ArXiV

January 2015

Stopped Gluino Search

SUSY

J. Cogan

Andy Haas, Paul Jackson, Josh Cogan

SLAC

ATL-COM-PHYS-2011-166,
ATL-COM-PHYS-2011-168,
arXiv:1201.5595,10.

PhysRevD.88.112003 arXiv:1310.6584

https://confluence.slac.stanford.edu/display/Atlas/Stopped+Gluinos

https://twiki.cern.ch/twiki/bin/view/AtlasProtected/StoppedGluinos

submitted to EPJ (Jan/2012)

5/2/2012

Lepton-jets Search

Exotics

E. Strauss

Emanuel Strauss

SLAC, NYU, U. Alberta, U. Michigan

ATL-COM-PHYS-2012-799
CERN-PH-EP-2012-319

https://confluence.slac.stanford.edu/display/Atlas/Lepton+Jets

https://twiki.cern.ch/twiki/bin/view/AtlasProtected/Leptonjets

2011 analysis in EB review

8/1/2012

Boosted objects signatures using jet substructure

Exotics and Standard Model

A. Schwartzman

David. W. Miller, Ariel Schwartzman

SLAC, ANL, UCL, DESY, McGill, Toronto, Oxford, IFIC, UAN,  Weizmann,

ATLAS-COM-CONF-2011-084

 

JetSubstructure TWiki

CONF Note approved on 5/17/11

5/17/11

QCD Event Shapes at High Q^2

Standard Model

A. Schwartzman

David. W. Miller, Ariel Schwartzman

SLAC

ATLAS-STDM-2011-33-002

 

EventShapesAtHighQSquared TWiki

PRD draft in collab review

5/2/2012

SUSY searches with b + MET

SUSY

A. Schwartzman

Bart Butler, Per Hansson, Ariel Schwartzman, Dan Silverstein

SLAC, U Oklahoma, Tokyo, Sheffield, Liverpool, Freiburg, UT Arlington, CERN, Beunos Aires

ATL-COM-PHYS-2011-185

ATL-COM-PHYS-2011-1617
arxiv:1203.6193
ATL-COM-PHYS-2012-116

 

SUSYEtmissBjet Twiki

submitted to PRD (Mar/2012)

5/2/2012

SUSY direct Stop search in 1 lepton + MET final state, full 2012 data

SUSY

T. Eifert

Till Eifert, Philippe Grenier, Ben Nachman

SLAC, Yale, Wuppertal, Geneva, NIKHEF 

ATLAS-CONF-2013-037 
ATL-COM-PHYS-2013-060 (support note)

 

https://twiki.cern.ch/twiki/bin/viewauth/AtlasProtected/DirectStop1Lepton

Target: publication (conference note is public)

4/4/2013 

Higgs decaying to Z gamma

Higgs

T. Barklow

J. Cogan, B. Fulsom, T. Barklow

SLAC et al. (+22 groups)

ATL-COM-PHYS-2012-1795

 http://arxiv.org/abs/1402.3051

 

In progress

2013/09/05

Decay of X(3872) to J/psi gamma

BPhys

B. Fulsom

B. Fulsom

SLAC, Lancaster, Birmingham, Manchester

 

 

 

In development

2013/09/05

...

Title

Physics Topic

SLAC authors

Pubs/Notes/Thesis

Date

Less is more when gluinos mediateSUSYBen Nachmanarxiv:1505.00994June/2015
Search for massive supersymmetric particles decaying to many jets using the ATLAS detector in pp collisions at \sqrt{s} = 8 TeVSUSYMax Swiatlowski, Ariel SchwartzmanSubmitted to PRD, arXiv:1502.05686Feb/2015
Jets from Jets: Re-clustering as a tool for large radius jet reconstruction and grooming at the LHCJetETmissBen Nachman, Pascal Nef, Max Swiatlowski, Ariel SchwartzmanJHEP 02 (2015) 075, arXiv:1407.2922Feb/2015
Sneaky Light StopSUSYBen NachmanPLB 743 (2015) 218, arXiv:1410.7025Feb/2015
A fast, simple, and naturally machine-precision algorithm for calculating both symmetric and asymmetric MT2, for any physical inputsSUSYBen NachmanJHEP 03 (2015) 100, arXiv:1411.4312Feb/2015
Performance and Calibration of the JetFitterCharm Algorithm for c-Jet Identificationb-taggingGiacinto Piacquadio

ATL-PHYS-PUB-2015-001

 

Jan/2015
A Meta-analysis of the 8 TeV ATLAS and CMS SUSY SearchesSUSYBen NachmanJHEP 02 (2015) 004, arXiv:1410.2270Jan/2015
Search for the bb decay of the Standard Model Higgs boson in associated (W /Z)H  production with the ATLAS detectorHiggsGiacinto Piacquadio

JHEP01(2015)069

 http://arxiv.org/abs/1409.6212

Jan/2015
Search for top squark pair production in final states with one top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in s√= 8 TeV pp collisions with the ATLAS detectorSUSYTill Eifert, Philippe Grenier, Ben NachmanJHEP 11 (2014) 118, arXiv:1407.0583July/2014
Reconstruction and Modelling of Jet Pull with the ATLAS Detector

JetETmiss

Ben Nachman, Max Swiatlowski, Ariel Schwartzman

ATLAS-CONF-2013-086

July/2014

A neural network clustering algorithm for the ATLAS silicon pixel detectorTrackingTim Nelson, Giacinto Piacquadio

JINST 9 (2014) P09009

http://arxiv.org/abs/1406.7690

June/2014
Tagging and suppression of pileup jets with the ATLAS detectorJetETmissPascal Nef, Ariel SchwartzmanATLAS-CONF-2014-018May/2014
Light-quark and gluon jet discrimination in pp collisions at s√ = 7 TeV with the ATLAS detectorJetETMissMax Swiatlowski, Ariel SchwartzmanarXiv:1405.6583May/2014
Search of out-of-time decays of stopped particles in the ATLAS detectorPh.D thesisJosh Cogan Mar/2014
Calibration of b-tagging using dileptonic top pair events in a combinatorial likelihood approach with the ATLAS experimentB-taggingGiacinto PiacquadioATLAS-CONF-2014-004Feb/2014
Machine learning in the search for Dark Matter with the ATLAS detectorPh.D thesisDan Silverstein Nov/2013
Search for long-lived stopped R-hadrons decaying out-of-time with pp collisions using the ATLAS detectorSUSYJosh Cogan, Andy Haas, Paul JacksonPhysRevD.88.112003,  arXiv:1310.6584Oct/2013

Jet Charge Studies with the ATLAS Detector Using sqrt(s) = 8 TeV Proton-Proton Collision Data

JetETmiss

Ben Nachman, Max Swiatlowski, Ariel Schwartzman

ATLAS-CONF-2013-086

Aug/2013

Performance and Validation of Q-Jets at the ATLAS Detector in pp Collisions at s√=8 TeV in 2012JetETMissMax Swiatlowski, Ben Nachman, Ariel SchwartzmanATLAS-CONF-2013-087Aug/2013
Search for the bb decay of the Standard Model Higgs boson in associated W/ZH production with the ATLAS detectorHiggsGiacinto PiacquadioATLAS-CONF-2013-079Jul/2013

Search for direct top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt(s) = 8 TeV pp collisions using 21.0 fb-1 of ATLAS data 

SUSY

Till Eifert, Philippe Grenier, Ben Nachman

ATLAS-CONF-2013-037

Mar/2013

A search for prompt lepton-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

Exotic

Emanuel Strauss

Phys. Lett. B 719 (2013) 299-317

Feb/2013

Search for direct top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt(s) = 8 TeV pp collisions using 13.0 fb-1 of ATLAS data

SUSY

Till Eifert, Philippe Grenier, Ben Nachman, Qi Zeng

ATLAS-CONF-2012-166

Dec/2012

Search for natural supersymmetry in hadronic final states of heavy flavors at ATLASPh.D thesisBart ButlerCERN-THESIS-2012-203Dec/2012

Search for direct top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt(s) = 7 TeV pp collisions using 4.7 fb-1 of ATLAS data

SUSY

Till Eifert, Philippe Grenier

Phys. Rev. Lett. 109, 211803 (2012)http://arxiv.org/abs/1208.2590

Aug/2012

Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector

SUSY

Josh Cogan, Andy Haas, Paul Jackson

EPJC 4, Vol 72 (2012), 1965
DOI: 10.1140/epjc/s10052-012-1965-6

May/2012

Search for supersymmetry in pp collisions at sqrt(s) = 7 TeV in final states with missing transverse momentum and b-jets with the ATLAS detector

SUSY

Bart Butler, Per Hansson, Ariel Schwartzman, Dan Silverstein

submitted to PRD
arxiv:1203.6193

Mar/2012

Measurement of tt production in the all-hadronic channel in 4.7 fb^-1^ of pp collisions at ?s = 7 TeV with the ATLAS detector

Top

Ignacio Aracena

ATLAS-CONF-2012-031

Mar/2012

Inclusive search for same-sign dilepton signatures in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

Exotic

Michael Wilson

JHEP 10 (2011) 107
arxiv:1108.0366

Oct/2011


Search for displaced vertices arising from decays of new heavy particles in 7 TeV pp collisions at ATLAS

SUSY

Claus Horn

Phys.Lett. B707 (2012) 478-496
arXiv:1109.2242

Sep/2011

Measurement of Hadronic Event Shapes and Jet Substructure in Proton-Proton Collisions at 7.0 TeV Center-of-Mass Energy with the ATLAS Detector at the Large Hadron Collider
(1 of the 5 ATLAS Ph.D thesis awards for 2011)

Ph.D thesis

David Miller

CERN-THESIS-2011-144 ; SLAC-R-974

Jun/2011

A Search for Lepton-Jets with Muons at ATLAS

Exotic

Emanuel Strauss, Andy Haas

ATLAS-CONF-2011-076

May/2011

...

Name

Pub/Note Title

Note number and doc link

Review Dates

G. Piacquadio

SM Z+b analysis

 

JHEP10(2014)141

ATL-COM-PHYS-2014-037
 ATL-COM-PHYS-2012-1504

2014 (on-goingfinished)

G. PiacquadioBs to mumu analysisPhys. Lett. B713 (2012) 180-196 
(previous 7 TeV publication)
since 2012-2014
M. KaganDark Matter + Higgs->bb since 2014 (on-going)
M. KaganDark Matter + Heavy FlavorEPJC 75 (2015) 922014

E. Strauss

SM H -> mu mu

ATLAS-COM-CONF-2013-003 

2012 (on-going)2013

E. Strauss

Long-lived Neutral Particle Triggers

JINST 8 (2013) P07015 

May 2013

T. Eifert

SUSY photon+L/b+MET

 

2012 (on-going)

T. Eifert

NMSSM neutral Higgs

 

2012 (on-going)

T. EifertSUSY photon+lep/b+MET 2013 (on-going)
T. EifertExotics: Vector Like Quarks: Ht+X, Wb+X, Wt+X 2013 (on-going)

C. Young

Higgs -> lnu jj

 

2012

B. Fulsom

psi(2S) vs. J/psi production cross section

 

2012 (on-going)

B. Fulsom

Search for new states decaying to Y(1S)pipi

 

2013 (on-going)

...