Artigos - Instituto de Física Teórica (IFT)
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New higher-derivative R-4 theorems for graviton scattering
(Physical Review Letters, 2007) [Artigo]The nonminimal pure spinor formalism for the superstring is used to prove two new multiloop theorems which are related to recent higher-derivative R4 conjectures of Green, Russo, and Vanhove. The first theorem states that ... -
Search for Higgs Boson Pair Production in the Four b Quark Final State in Proton-Proton Collisions at sqrt[s]=13 TeV
(Physical review letters, 2022) [Artigo]A search for pairs of Higgs bosons produced via gluon and vector boson fusion is presented, focusing on the four b quark final state. The data sample consists of proton-proton collisions at a center-of-mass energy of 13 TeV, ... -
Search for charged-lepton flavor violation in top quark production and decay in pp collisions at √s = 13 TeV
(Journal of High Energy Physics, 2022) [Artigo]Results are presented from a search for charged-lepton flavor violating (CLFV) interactions in top quark production and decay in pp collisions at a center-of-mass energy of 13 TeV. The events are required to contain one ... -
Erratum to: Measurement of the top quark mass with lepton+jets final states using pp collisions at s = 13 TeV (The European Physical Journal C, (2018), 78, 11, (891), 10.1140/epjc/s10052-018-6332-9)
(European Physical Journal C, 2022) [Errata]In this article the author name Luigi Calligaris was incorrectly written as A. Calligaris. The original article has been corrected. -
Search for high-mass resonances decaying to a jet and a Lorentz-boosted resonance in proton-proton collisions at s=13TeV
(Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2022) [Artigo]A search is reported for high-mass hadronic resonances that decay to a parton and a Lorentz-boosted resonance, which in turn decays into a pair of partons. The search is based on data collected with the CMS detector at the ... -
Search for heavy resonances decaying to Z (ν ν ¯)V (q q ¯ ′) in proton-proton collisions at s =13 TeV
(Physical Review D, 2022) [Artigo]A search is presented for heavy bosons decaying to Z(νν¯)V(qq¯′), where V can be a W or a Z boson. A sample of proton-proton collision data at s=13 TeV was collected by the CMS experiment during 2016-2018. The data correspond ... -
Identification of hadronic tau lepton decays using a deep neural network
(Journal of Instrumentation, 2022) [Artigo]A new algorithm is presented to discriminate reconstructed hadronic decays of tau leptons (τ h) that originate from genuine tau leptons in the CMS detector against τ h candidates that originate from quark or gluon jets, ... -
Measurement of the Drell-Yan forward-backward asymmetry at high dilepton masses in proton-proton collisions at √s = 13 TeV
(Journal of High Energy Physics, 2022) [Artigo]A measurement of the forward-backward asymmetry of pairs of oppositely charged leptons (dimuons and dielectrons) produced by the Drell-Yan process in proton-proton collisions is presented. The data sample corresponds to ... -
First Search for Exclusive Diphoton Production at High Mass with Tagged Protons in Proton-Proton Collisions at s =13 TeV
(Physical Review Letters, 2022) [Artigo]A search for exclusive two-photon production via photon exchange in proton-proton collisions, pp→pγγp with intact protons, is presented. The data correspond to an integrated luminosity of 9.4 fb-1 collected in 2016 using ... -
Search for resonances decaying to three W bosons in the hadronic final state in proton-proton collisions at s =13 TeV
(Physical Review D, 2022) [Artigo]A search for Kaluza-Klein excited vector boson resonances, WKK, decaying in cascade to three W bosons via a scalar radion R, WKK→WR→WWW, in a final state containing two or three massive jets is presented. The search is ... -
Search for Flavor-Changing Neutral Current Interactions of the Top Quark and Higgs Boson in Final States with Two Photons in Proton-Proton Collisions at s =13 TeV
(Physical Review Letters, 2022) [Artigo]Proton-proton interactions resulting in final states with two photons are studied in a search for the signature of flavor-changing neutral current interactions of top quarks (t) and Higgs bosons (H). The analysis is based ... -
Probing Charm Quark Dynamics via Multiparticle Correlations in Pb-Pb Collisions at sNN =5.02 TeV
(Physical Review Letters, 2022) [Artigo]Multiparticle azimuthal correlations of prompt D0 mesons are measured in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of sNN=5.02 TeV. For the first time, a four-particle cumulant method is used to extract ... -
Observation of the Bc+ Meson in Pb-Pb and pp Collisions at sNN =5.02 TeV and Measurement of its Nuclear Modification Factor
(Physical Review Letters, 2022) [Artigo]The Bc+ meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the Bc+ meson in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a center-of-mass ... -
Search for new physics in the lepton plus missing transverse momentum final state in proton-proton collisions at √s = 13 TeV
(Journal of High Energy Physics, 2022) [Artigo]A search for physics beyond the standard model (SM) in final states with an electron or muon and missing transverse momentum is presented. The analysis uses data from proton-proton collisions at a centre-of-mass energy of ... -
Erratum to: Search for new physics in dijet angular distributions using proton-proton collisions at s = 13 TeV and constraints on dark matter and other models (The European Physical Journal C, (2018), 78, 9, (789), 10.1140/epjc/s10052-018-6242-x)
(European Physical Journal C, 2022) [Errata]In this article the author name Luigi Calligaris was incorrectly written as A. Calligaris. The original article has been corrected. -
Search for Resonances Decaying to Three W Bosons in Proton-Proton Collisions at s =13 TeV
(Physical Review Letters, 2022) [Artigo]A search for resonances decaying into a W boson and a radion, where the radion decays into two W bosons, is presented. The data analyzed correspond to an integrated luminosity of 138 fb-1 recorded in proton-proton collisions ... -
Inclusive nonresonant multilepton probes of new phenomena at s =13 TeV
(Physical Review D, 2022) [Artigo]An inclusive search for nonresonant signatures of beyond the standard model (SM) phenomena in events with three or more charged leptons, including hadronically decaying τ leptons, is presented. The analysis is based on a ... -
Search for resonant production of strongly coupled dark matter in proton-proton collisions at 13 TeV
(Journal of High Energy Physics, 2022) [Artigo]The first collider search for dark matter arising from a strongly coupled hidden sector is presented and uses a data sample corresponding to 138 fb−1, collected with the CMS detector at the CERN LHC, at s = 13 TeV. The ... -
Measurement of the production cross section for Z+b jets in proton-proton collisions at s =13 TeV
(Physical Review D, 2022) [Artigo]The measurement of the cross section for the production of a Z boson, decaying to dielectrons or dimuons, in association with at least one bottom quark jet is performed with proton-proton collision data at s=13 TeV. The ... -
Search for supersymmetry in final states with two or three soft leptons and missing transverse momentum in proton-proton collisions at √s = 13 TeV
(Journal of High Energy Physics, 2022) [Artigo]A search for supersymmetry in events with two or three low-momentum leptons and missing transverse momentum is performed. The search uses proton-proton collisions at s = 13 TeV collected in the three-year period 2016–2018 ...