Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at √s = 8 TeV

Khachatryan, Vardan

doi:10.1088/1748-0221/10/08/P08010

Title: Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at √s = 8 TeV

Journal Article · Mon Aug 10 00:00:00 EDT 2015 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/10/08/P08010· OSTI ID:1221259

Khachatryan, Vardan ^[1]

Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.

A description is provided of the performance of the CMS detector for photon reconstruction and identification in proton-proton collisions at a centre-of-mass energy of 8 TeV at the CERN LHC. Details are given on the reconstruction of photons from energy deposits in the electromagnetic calorimeter (ECAL) and the extraction of photon energy estimates. Furthermore, the reconstruction of electron tracks from photons that convert to electrons in the CMS tracker is also described, as is the optimization of the photon energy reconstruction and its accurate modelling in simulation, in the analysis of the Higgs boson decay into two photons. In the barrel section of the ECAL, an energy resolution of about 1% is achieved for unconverted or late-converting photons from H → γγ decays. Furthermore, different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1221259

Report Number(s):: FERMILAB-PUB-15-069-CMS; CERN-PH-EP-2015-006; CMS-EGM-14-001; arXiv eprint number arXiv:1502.02702

Journal Information:: Journal of Instrumentation, Vol. 10; ISSN 1748-0221

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 182 works

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Search for supersymmetry in proton-proton collisions at 13 TeV in final states with jets and missing transverse momentum Sirunyan, A. M.; Tumasyan, A.; Adam, W. Karlsruhe https://doi.org/10.5445/ir/1000126838	text	January 2019
Particle-flow reconstruction and global event description with the CMS detector Sirunyan, A. M.; Tumasyan, Armen; Adam, Wolfgang RWTH Aachen University https://doi.org/10.18154/rwth-2018-01248	text	January 2017
Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang RWTH Aachen University https://doi.org/10.18154/rwth-2020-07423	text	January 2020
Search for supersymmetry in final states with photons and missing transverse momentum in proton-proton collisions at 13 TeV Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-02155	text	January 2019
Search for supersymmetry in events with a photon, jets, $\mathrm {b}$ -jets, and missing transverse momentum in proton–proton collisions at 13 $\,\text {Te}\text {V}$ Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-02802	text	January 2019
Search for new physics in final states with an energetic jet or a hadronically decaying W or Z boson and transverse momentum imbalance at √s=13 TeV Collaboration, Cms; Sirunyan, Albert M.; Backhaus, Malte ETH Zurich https://doi.org/10.3929/ethz-b-000269160	text	January 2018
Search for Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at √s =13 TeV Collaboration, Cms; Sirunyan, Albert M.; Backhaus, Malte ETH Zurich https://doi.org/10.3929/ethz-b-000313835	text	January 2018
A search for the standard model Higgs boson decaying to charm quarks Collaboration, Cms; Sirunyan, Albert M.; Backhaus, Malte ETH Zurich https://doi.org/10.3929/ethz-b-000409227	text	January 2020
Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at √s = 13 TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. Karlsruhe https://doi.org/10.5445/ir/1000100634	text	January 2019
Search for Physics beyond the Standard Model in Events with Overlapping Photons and Jets Sirunyan, A. M.; Tumasyan, A.; Adam, W. Karlsruhe https://doi.org/10.5445/ir/1000104215	text	January 2019
Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at $ \sqrt{\mathrm{s}} $ = 13 TeV and constraints on anomalous quartic couplings Sirunyan, A. M.; Tumasyan, A.; Adam, W. Karlsruhe https://doi.org/10.5445/ir/1000121453	text	January 2020
Search for new phenomena in final states with two opposite-charge, same-flavor leptons, jets, and missing transverse momentum in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. Journal of High Energy Physics, Vol. 2018, Issue 3 https://doi.org/10.1007/s13130-018-7845-2	journal	March 2018
Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang RWTH Aachen University https://doi.org/10.18154/rwth-2020-07377	text	January 2020
Calibration of the CMS hadron calorimeters using proton-proton collision data at $\sqrt{s} =$ 13 TeV Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang RWTH Aachen University https://doi.org/10.18154/rwth-2020-07841	text	January 2019
Search for supersymmetry in proton-proton collisions at 13 TeV in final states with jets and missing transverse momentum Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-04490	text	January 2019
Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV and constraints on anomalous quartic couplings Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2020-00994	text	January 2020
Search for supersymmetry using Higgs boson to diphoton decays at √s = 13 TeV Collaboration, The CMS; Sirunyan, Albert M.; Backhaus, Malte ETH Zurich https://doi.org/10.3929/ethz-b-000387025	text	January 2019
Identification of heavy, energetic, hadronically decaying particles using machine-learning techniques Collaboration, Cms; Sirunyan, Albert M.; Tumasyan, Armen R. ETH Zurich https://doi.org/10.3929/ethz-b-000429003	text	January 2020
Measurement of differential cross sections for inclusive isolated-photon and photon+jet production in proton-proton collisions at $\sqrt{s} = 13\,\text {TeV} $ Sirunyan, A. M.; Tumasyan, A.; Adam, W. Karlsruhe https://doi.org/10.5445/ir/1000089881	text	January 2019
Measurement of differential cross sections for inclusive isolated-photon and photon+jets production in proton-proton collisions at $\sqrt{s} =$ 13 TeV Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang RWTH Aachen University https://doi.org/10.18154/rwth-2019-00963	text	January 2019
Particle-flow reconstruction and global event description with the CMS detector Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2017-06676	text	January 2017
Search for supersymmetry in final states with photons and missing transverse momentum in proton-proton collisions at 13 TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. Karlsruhe https://doi.org/10.5445/ir/1000096696	text	January 2019
Calibration of the CMS hadron calorimeters using proton-proton collision data at √s = 13 TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. Karlsruhe https://doi.org/10.5445/ir/1000120414	text	January 2020
Search for associated production of a Higgs boson and a single top quark in proton-proton collisions at $\sqrt{s} =$ TeV Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang RWTH Aachen University https://doi.org/10.18154/rwth-2019-05743	text	January 2019
Search for supersymmetry using Higgs boson to diphoton decays at √s = 13 TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. RWTH Aachen University https://doi.org/10.18154/rwth-2020-04736	text	January 2019
A search for the standard model Higgs boson decaying to charm quarks Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang RWTH Aachen University https://doi.org/10.18154/rwth-2020-07307	text	January 2019
Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV and constraints on anomalous quartic couplings Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang RWTH Aachen University https://doi.org/10.18154/rwth-2020-08102	text	January 2020
Observation of medium induced modifications of jet fragmentation in PbPb collisions using isolated-photon-tagged jets Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2018-01042	text	January 2018
Singlet-Catalyzed Electroweak Phase Transitions in the 100 TeV Frontier Kotwal, Ashutosh V.; Ramsey-Musolf, Michael J.; No, Jose Miguel arXiv https://doi.org/10.48550/arxiv.1605.06123	text	January 2016
Search for supersymmetry in final states with photons and missing transverse momentum in proton-proton collisions at 13 TeV Collaboration, Cms arXiv https://doi.org/10.48550/arxiv.1903.07070	text	January 2019
Search for physics beyond the standard model in events with overlapping photons and jets Collaboration, Cms arXiv https://doi.org/10.48550/arxiv.1907.06275	text	January 2019
Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at $\sqrt{s} =$ 13 TeV Collaboration, Cms arXiv https://doi.org/10.48550/arxiv.1908.02699	text	January 2019
Search for supersymmetry in proton-proton collisions at 13 TeV in final states with jets and missing transverse momentum Collaboration, Cms arXiv https://doi.org/10.48550/arxiv.1908.04722	text	January 2019
Particle-flow reconstruction and global event description with the CMS detector Collaboration, Cms; Canelli, Maria Florencia; Kilminster, Benjamin IOP Publishing https://doi.org/10.5167/uzh-146499	text	January 2017

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