Institution
Rio de Janeiro State University
Education•Rio de Janeiro, Brazil•
About: Rio de Janeiro State University is a education organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 16631 authors who have published 30919 publications receiving 465753 citations. The organization is also known as: UERJ & Rio de Janeiro State University.
Topics: Population, Large Hadron Collider, Standard Model, Higgs boson, Lepton
Papers published on a yearly basis
Papers
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Vardan Khachatryan, Albert M. Sirunyan, Armen Tumasyan, Wolfgang Adam1 +2143 more•Institutions (135)
TL;DR: In this paper, a search for microscopic black hole production and decay in pp collisions at a center-of-mass energy of 7 TeV was conducted by the CMS Collaboration at the LHC, using a data sample corresponding to an integrated luminosity of 35 inverse picobarns.
98 citations
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TL;DR: Evaluating whether the use of fluoride-releasing pit and fissure sealants, bonding orthodontic agents and restorative materials, in comparison to a non-fluoride releasing material, reduces caries incidence in children or adults finds the anti-caries properties of these materials are still not based on clinical evidence.
98 citations
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Vardan Khachatryan, Albert M. Sirunyan, Armen Tumasyan, Wolfgang Adam1 +2288 more•Institutions (147)
TL;DR: In this paper, a first search was reported for a standard model Higgs boson (H) that is produced through vector boson fusion and decays to a bottom-quark pair.
Abstract: A first search is reported for a standard model Higgs boson (H) that is produced through vector boson fusion and decays to a bottom-quark pair. Two data samples, corresponding to integrated luminosities of 19.8 inverse femtobarns and 18.3 inverse femtobarns of proton-proton collisions at sqrt(s) = 8 TeV were selected for this channel at the CERN LHC. The observed significance in these data samples for a H to b bbar signal at a mass of 125 GeV is 2.2 standard deviations, while the expected significance is 0.8 standard deviations. The fitted signal strength mu = sigma/sigma[SM] = 2.8 + 1.6 - 1.4. The combination of this result with other CMS searches for the Higgs boson decaying to a b-quark pair, yields a signal strength of 1.0 +/- 0.4, corresponding to a signal significance of 2.6 standard deviations for a Higgs boson mass of 125 GeV.
97 citations
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TL;DR: Using energy dispersive X-ray fluorescence analysis with an Xray tube filtered with Ti, it was possible to determine the concentration at ppm level of several elements (K, Ca, Ti, Mn, Fe, Cu, Zn, Ga, Br, Rb, Sr, Zr, Y and Pb) in soil treated with organic compounds of urban garbage as discussed by the authors.
97 citations
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TL;DR: The standard model (SM) production of four top quarks in proton-proton collisions is studied by the CMS Collaboration, with limits set on the production of a heavy scalar or pseudoscalar boson in Type-II two-Higgs-doublet and simplified dark matter models.
Abstract: The standard model (SM) production of four top quarks ($\text {t} {}{\overline{\text {t}}} \text {t} {}{\overline{\text {t}}} $) in proton–proton collisions is studied by the CMS Collaboration. The data sample, collected during the 2016–2018 data taking of the LHC, corresponds to an integrated luminosity of 137$\,\text {fb}^{-1}$ at a center-of-mass energy of 13$\,\text {TeV}$. The events are required to contain two same-sign charged leptons (electrons or muons) or at least three leptons, and jets. The observed and expected significances for the $\text {t} {}{\overline{\text {t}}} \text {t} {}{\overline{\text {t}}} $ signal are respectively 2.6 and 2.7 standard deviations, and the $\text {t} {}{\overline{\text {t}}} \text {t} {}{\overline{\text {t}}} $ cross section is measured to be $12.6^{+5.8}_{-5.2}\,\text {fb} $. The results are used to constrain the Yukawa coupling of the top quark to the Higgs boson, $y_{\text {t}}$, yielding a limit of $|y_{\text {t}}/y_{\text {t}}^{\mathrm {SM}} | < 1.7$ at $95\%$ confidence level, where $y_{\text {t}}^{\mathrm {SM}}$ is the SM value of $y_{\text {t}}$. They are also used to constrain the oblique parameter of the Higgs boson in an effective field theory framework, $\hat{H}<0.12$. Limits are set on the production of a heavy scalar or pseudoscalar boson in Type-II two-Higgs-doublet and simplified dark matter models, with exclusion limits reaching 350–470$\,\text {GeV}$ and 350–550$\,\text {GeV}$ for scalar and pseudoscalar bosons, respectively. Upper bounds are also set on couplings of the top quark to new light particles.
97 citations
Authors
Showing all 16818 results
Name | H-index | Papers | Citations |
---|---|---|---|
Hyun-Chul Kim | 176 | 4076 | 183227 |
Maria Elena Pol | 139 | 1414 | 99240 |
Wagner Carvalho | 135 | 1395 | 94184 |
Alberto Santoro | 135 | 1576 | 100629 |
Andre Sznajder | 134 | 1464 | 98242 |
Luiz Mundim | 133 | 1413 | 89792 |
Helio Nogima | 132 | 1274 | 84368 |
D. De Jesus Damiao | 128 | 1162 | 82707 |
Magdalena Malek | 128 | 598 | 67486 |
Sudha Ahuja | 127 | 1016 | 75739 |
Helena Malbouisson | 125 | 1151 | 82692 |
Jose Chinellato | 123 | 1116 | 64267 |
Flavia De Almeida Dias | 120 | 590 | 59083 |
Gilvan Alves | 119 | 829 | 69382 |
C. De Oliveira Martins | 119 | 880 | 66744 |