Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV
A search is presented for new physics in events with two low-momentum, oppositely charged leptons (electrons or muons) and missing transverse momentum in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data collected using the CMS detector at the LHC correspond to an integrated...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Elsevier BV
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65913/ http://irep.iium.edu.my/65913/1/65913_Search%20for%20new%20physics%20in%20events%20_article.pdf http://irep.iium.edu.my/65913/2/65913_Search%20for%20new%20physics%20in%20events%20_scopus.pdf |
| _version_ | 1848786474371121152 |
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| author | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_facet | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_sort | Sirunyan, A. M. |
| building | IIUM Repository |
| collection | Online Access |
| description | A search is presented for new physics in events with two low-momentum, oppositely charged leptons
(electrons or muons) and missing transverse momentum in proton-proton collisions at a centre-of-mass
energy of 13 TeV. The data collected using the CMS detector at the LHC correspond to an integrated
luminosity of 35.9 fb−1. The observed event yields are consistent with the expectations from the standard
model. The results are interpreted in terms of pair production of charginos and neutralinos (χ±
1 and χ0
2 )
with nearly degenerate masses, as expected in natural supersymmetry models with light higgsinos, as
well as in terms of the pair production of top squarks (
t), when the lightest neutralino and the top squark
have similar masses. At 95% confidence level, wino-like χ±
1 /χ0
2 masses are excluded up to 230 GeV for
a mass difference of 20 GeV relative to the lightest neutralino. In the higgsino-like model, masses are
excluded up to 168 GeV for the same mass difference. For t pair production, top squark masses up to
450 GeV are excluded for a mass difference of 40 GeV relative to the lightest neutralino |
| first_indexed | 2025-11-14T17:09:37Z |
| format | Article |
| id | iium-65913 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:09:37Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-659132019-01-03T06:40:34Z http://irep.iium.edu.my/65913/ Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics A search is presented for new physics in events with two low-momentum, oppositely charged leptons (electrons or muons) and missing transverse momentum in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data collected using the CMS detector at the LHC correspond to an integrated luminosity of 35.9 fb−1. The observed event yields are consistent with the expectations from the standard model. The results are interpreted in terms of pair production of charginos and neutralinos (χ± 1 and χ0 2 ) with nearly degenerate masses, as expected in natural supersymmetry models with light higgsinos, as well as in terms of the pair production of top squarks ( t), when the lightest neutralino and the top squark have similar masses. At 95% confidence level, wino-like χ± 1 /χ0 2 masses are excluded up to 230 GeV for a mass difference of 20 GeV relative to the lightest neutralino. In the higgsino-like model, masses are excluded up to 168 GeV for the same mass difference. For t pair production, top squark masses up to 450 GeV are excluded for a mass difference of 40 GeV relative to the lightest neutralino Elsevier BV 2018-07-10 Article PeerReviewed application/pdf en http://irep.iium.edu.my/65913/1/65913_Search%20for%20new%20physics%20in%20events%20_article.pdf application/pdf en http://irep.iium.edu.my/65913/2/65913_Search%20for%20new%20physics%20in%20events%20_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy, 782. pp. 440-467. ISSN 0370-2693 ttps://reader.elsevier.com/reader/sd/B9FA0A06B667832D3E835EF9A24F27200249A8E36DD1CCC04FF640CF25F1389E247B1CB5EBAFA6CC9D0D480854445FFF 10.1016/j.physletb.2018.05.062 |
| spellingShingle | Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV |
| title | Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV |
| title_full | Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV |
| title_fullStr | Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV |
| title_full_unstemmed | Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV |
| title_short | Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV |
| title_sort | search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13tev |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/65913/ http://irep.iium.edu.my/65913/ http://irep.iium.edu.my/65913/ http://irep.iium.edu.my/65913/1/65913_Search%20for%20new%20physics%20in%20events%20_article.pdf http://irep.iium.edu.my/65913/2/65913_Search%20for%20new%20physics%20in%20events%20_scopus.pdf |