Physics and Astronomy
Recent Submissions
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Design of organic structure directing agents to control the synthesis of zeolites for carbon capture and storage
(2019)We have de novo designed organic structure directing agents (OSDAs) for zeolites that have been predicted to be effective materials for carbon capture and storage. The zeolites were selected for their reduced parasitic energy when used as CO2 adsorbants in a pressure–temperature swing process in coal- or natural gas-fired power plants. Synthetically ... -
Study of the underlying event in top quark pair production in pp collisions at 13 TeV
(2019)Measurements of normalized differential cross sections as functions of the multiplicity and kinematic variables of charged-particle tracks from the underlying event in top quark and antiquark pair production are presented. The measurements are performed in proton-proton collisions at a center-of-mass energy of 13 TeV, and are based on data collected ... -
Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at s√=13TeV
(2019)A search is presented for the single production of vector-like quarks in proton–proton collisions at s√=13TeV. The data, corresponding to an integrated luminosity of 35.9fb−1, were recorded with the CMS experiment at the LHC. The analysis focuses on the vector-like quark decay into a top quark and a W boson, with one muon or electron in the final ... -
Search for rare decays of Z and Higgs bosons to J/ψ and a photon in proton-proton collisions at s√ = 13TeV
(2019)A search is presented for decays of Z and Higgs bosons to a J/ψ meson and a photon, with the subsequent decay of the J/ψ to μ+μ−. The analysis uses data from proton-proton collisions with an integrated luminosity of 35.9fb−1 at s√=13TeV collected with the CMS detector at the LHC. The observed limit on the Z→J/ψγ decay branching fraction, assuming ... -
Search for new physics in final states with a single photon and missing transverse momentum in proton-proton collisions at s√=13 TeV
(2019)A search is conducted for new physics in final states containing a photon and missing transverse momentum in proton-proton collisions at s√=13 TeV, using the data collected in 2016 by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb−1. No deviations from the predictions of the standard model are observed. The results ... -
First Results on the Scalar WIMP-Pion Coupling, Using the XENON1T Experiment
(2019)We present first results on the scalar coupling of weakly interacting massive particles (WIMPs) to pions from 1 t yr of exposure with the XENON1T experiment. This interaction is generated when the WIMP couples to a virtual pion exchanged between the nucleons in a nucleus. In contrast to most nonrelativistic operators, these pion-exchange currents can ... -
Search for new particles decaying to a jet and an emerging jet
(2019)A search is performed for events consistent with the pair production of a new heavy particle that acts as a mediator between a dark sector and normal matter, and that decays to a light quark and a new fermion called a dark quark. The search is based on data corresponding to an integrated luminosity of 16.1 fb−1 from proton-proton collisions at s√=13 ... -
Search for Narrow Hγ Resonances in Proton-Proton Collisions at √s=13 TeV
(2019)A search for heavy, narrow resonances decaying to a Higgs boson and a photon (Hγ) has been performed in proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1 collected with the CMS detector at the LHC in 2016. Events containing a photon and a Lorentz-boosted hadronically decaying ... -
Search for the Higgs Boson Decaying to Two Muons in Proton-Proton Collisions at √s=13 TeV
(2019)A search for the Higgs boson decaying to two oppositely charged muons is presented using data recorded by the CMS experiment at the CERN LHC in 2016 at a center-of-mass energy √s=13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Data are found to be compatible with the predicted background. For a Higgs boson with a mass of 125.09 GeV, ... -
Search for long-lived particles decaying into displaced jets in proton-proton collisions at √s=13 TeV
(2019)A search for long-lived particles decaying into jets is presented. Data were collected with the CMS detector at the LHC from proton-proton collisions at a center-of-mass energy of 13 TeV in 2016, corresponding to an integrated luminosity of 35.9 fb−1. The search examines the distinctive topology of displaced tracks and secondary vertices. The selected ... -
Search for Dark Matter Particles Produced in Association with a Top Quark Pair at √s=13 TeV
(2019)A search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at √s=13 TeV. The data correspond to an integrated luminosity of 35.9 fb−1 recorded by the CMS detector at the LHC. No significant excess over the standard model expectation is observed. The results are interpreted using simplified ... -
Search for the chiral magnetic effect at the LHC with the CMS experiment
(2019)Searches for the chiral magnetic effect (CME) using charge-dependent azimuthal correlations with respect to event planes are presented in PbPb collisions at 5.02 TeV and pPb collisions at 5.02 and 8.16 TeV, with the CMS experiment at the LHC. The azimuthal correlations with respect to the second- and third-order event planes are explored as a function ... -
Muon Identification using Neural Networks With the Muon Telescope Detector at STAR
(2019)The installation of the Muon Telescope Detector (MTD) at STAR allows a measurement of the dimuon (μ+μ−) production in heavy-ion collisions over a large invariant mass range for the first time. Data has been collected with the MTD from Au+Au collisions at sNN=200GeV and from p+p collisions at s=200GeV. These two datasets allow for new opportunities ... -
Measurement of differential cross sections for Z boson pair production in association with jets at s=8 and 13TeV
(2019)This Letter reports measurements of differential cross sections for the production of two Z bosons in association with jets in proton–proton collisions at s=8 and 13 TeV. The analysis is based on data samples collected at the LHC with the CMS detector, corresponding to integrated luminosities of 19.7 and 35.9fb−1 at 8 and 13 TeV, respectively. The ... -
Non-Gaussian elliptic-flow fluctuations in PbPb collisions at sNN=5.02TeV
(2019)Event-by-event fluctuations in the elliptic-flow coefficient v2 are studied in PbPb collisions at sNN=5.02 TeV using the CMS detector at the CERN LHC. Elliptic-flow probability distributions p(v2) for charged particles with transverse momentum 0.3<pT<3.0GeV/c and pseudorapidity |η|<1.0 are determined for different collision centrality classes. The ... -
Search for Higgs boson pair production in the γγbb‾ final state in pp collisions at s=13TeV
(2019)A search is presented for the production of a pair of Higgs bosons, where one decays into two photons and the other one into a bottom quark–antiquark pair. The analysis is performed using proton–proton collision data at s=13TeV recorded in 2016 by the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9fb−1. The results are in ... -
Invariant jet mass measurements in pp collisions at √s=200 GeV at RHIC
(2021)We present the first inclusive measurements of the invariant and softdrop jet mass in proton-proton collisions at √s=200 GeV at STAR. The measurements are fully corrected for detector effects, and reported differentially in both the jet transverse momentum and jet radius parameter. We compare the measurements to established leading-order Monte Carlo ... -
In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors
(2020)We study the in-plane electronic anisotropy in the parent compounds of several families of Fe-based superconductors (BaFe2As2, EuFe2As2, NaFeAs, LiFeAs, FeSe, and LaFeAsO) by polarization-resolved Raman scattering. We measure intensity of the fully symmetric c-axis vibration of As atom mode in the XY scattering geometry and notice that the mode's ... -
Probing Jets from Young Embedded Sources: Clues from HST Near-IR [Fe ii] Images
(2021)We present near-infrared [Fe ii] images of four Class 0/I jets (HH 1/2, HH 34, HH 111, HH 46/47) observed with the Hubble Space Telescope (HST) Wide Field Camera 3. The unprecedented angular resolution allows us to measure proper motions, jet widths and trajectories, and extinction along the jets. In all cases, we detect the counterjet, which was ... -
Search for resonant tt¯ production in proton-proton collisions at s√=13 TeV
(2019)A search for a heavy resonance decaying into a top quark and antiquark (tt¯) pair is performed using proton-proton collisions at s√=13 TeV. The search uses the data set collected with the CMS detector in 2016, which corresponds to an integrated luminosity of 35.9 fb−1. The analysis considers three exclusive final states and uses reconstruction ...
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