A search for narrow resonances decaying to bottom quark-antiquark pairs is presented, using a data sample of proton-proton collisions at sqrt[s]=8 TeV corresponding to an integrated luminosity of 19.7 fb^{-1}. The search is extended to masses lower than those reached in typical searches for resonances decaying into jet pairs at the LHC, by taking advantage of triggers that identify jets originating from bottom quarks.
View Article and Find Full Text PDFThe prompt D^{0} meson azimuthal anisotropy coefficients, v_{2} and v_{3}, are measured at midrapidity (|y|<1.0) in Pb-Pb collisions at a center-of-mass energy sqrt[s_{NN}]=5.02 TeV per nucleon pair with data collected by the CMS experiment.
View Article and Find Full Text PDFA search for resonancelike structures in the B_{s}^{0}π^{±} invariant mass spectrum is performed using proton-proton collision data collected by the CMS experiment at the LHC at sqrt[s]=8 TeV, corresponding to an integrated luminosity of 19.7 fb^{-1}. The B_{s}^{0} mesons are reconstructed in the decay chain B_{s}^{0}→J/ψϕ, with J/ψ→μ^{+}μ^{-} and ϕ→K^{+}K^{-}.
View Article and Find Full Text PDFInherited retinal diseases (IRDs) are heterogeneous phenotypes caused by variants in a large number of genes. Disease prevalence and the frequency of carriers in the general population have been estimated in only a few studies, but are largely unknown. To this end, we developed two parallel methods to calculate carrier frequency for mutations causing autosomal-recessive (AR) IRDs in the Israeli population.
View Article and Find Full Text PDFThe relative yields of ϒ mesons produced in pp and Pb-Pb collisions at sqrt[s_{NN}]=5.02 TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states, ϒ(2S) and ϒ(3S), to the ground state, ϒ(1S), in both Pb-Pb and pp collisions at the same center-of-mass energy.
View Article and Find Full Text PDFData from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.
View Article and Find Full Text PDFPurpose: To evaluate the efficacy of the BinoVision home system as measured by improvement of visual acuity in the patient's amblyopic eye.
Methods: An open-label prospective pilot-trial of the system was conducted with amblyopic children aged 4-8 years at the pediatric ophthalmology unit, Tel-Aviv Medical Center, January 2014 to October 2015. Participants were assigned to the study or sham group for treatment with BinoVision for 8 or 12 weeks.
Graefes Arch Clin Exp Ophthalmol
May 2018
Purpose: To investigate ocular manifestations in patients with vitiligo by multimodal imaging, including optical coherence tomography (OCT), color fundus photography, and fundus autofluorescence (FAF).
Methods: In this prospective, observational clinical study, vitiligo patients underwent ophthalmologic and dermatologic clinical assessment and imaging by spectral-domain OCT, FAF, and color fundus imaging. Ocular echography was performed as indicated.
The azimuthal anisotropy Fourier coefficients (v_{n}) in 8.16 TeV p+Pb data are extracted via long-range two-particle correlations as a function of the event multiplicity and compared to corresponding results in pp and PbPb collisions. Using a four-particle cumulant technique, v_{n} correlations are measured for the first time in pp and p+Pb collisions.
View Article and Find Full Text PDFThe first observation of electroweak production of same-sign W boson pairs in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 35.9 fb^{-1} collected at a center-of-mass energy of 13 TeV with the CMS detector at the LHC.
View Article and Find Full Text PDFAn inclusive search for the standard model Higgs boson (H) produced with large transverse momentum (p_{T}) and decaying to a bottom quark-antiquark pair (bb[over ¯]) is performed using a data set of pp collisions at sqrt[s]=13 TeV collected with the CMS experiment at the LHC. The data sample corresponds to an integrated luminosity of 35.9 fb^{-1}.
View Article and Find Full Text PDFBack pain is the leading cause of disability globally and the second most common cause of doctors' visits. Despite extensive research efforts, the underlying mechanism of back pain has not been fully elucidated. The intervertebral disc (IVD) is a viscoelastic tissue that provides flexibility to the spinal column and acts as a shock absorber in the spine.
View Article and Find Full Text PDFA search for standard model production of four top quarks ( ) is reported using events containing at least three leptons ( ) or a same-sign lepton pair. The events are produced in proton-proton collisions at a center-of-mass energy of 13 at the LHC, and the data sample, recorded in 2016, corresponds to an integrated luminosity of 35.9 .
View Article and Find Full Text PDFEur Phys J C Part Fields
March 2018
Events with no charged particles produced between the two leading jets are studied in proton-proton collisions at . The jets were required to have transverse momentum and pseudorapidity , and to have values of with opposite signs. The data used for this study were collected with the CMS detector during low-luminosity running at the LHC, and correspond to an integrated luminosity of 8 .
View Article and Find Full Text PDFA search for new physics in events with a Z boson produced in association with large missing transverse momentum at the LHC is presented. The search is based on the 2016 data sample of proton-proton collisions recorded with the CMS experiment at , corresponding to an integrated luminosity of 35.9 .
View Article and Find Full Text PDFEur Phys J C Part Fields
April 2018
A study of the associated production of a boson and a charm quark jet ( ), and a comparison to production with a quark jet ( ), in collisions at a centre-of-mass energy of 8 are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 , collected with the CMS detector at the CERN LHC.
View Article and Find Full Text PDFFour-lepton production in proton-proton collisions, , where or , is studied at a center-of-mass energy of 13 with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 35.9 .
View Article and Find Full Text PDFA search is presented for physics beyond the standard model, based on measurements of dijet angular distributions in proton-proton collisions at . The data collected with the CMS detector at the LHC correspond to an integrated luminosity of 35.9 .
View Article and Find Full Text PDFEur Phys J C Part Fields
September 2018
A measurement is presented of the cross section in collisions at , using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of . The product of the inclusive cross section and branching fraction is measured to be , in agreement with the standard model expectation, computed at next-to-next-to-leading order accuracy in perturbative quantum chromodynamics. The measurement is used to validate new analysis techniques relevant for future measurements of lepton production.
View Article and Find Full Text PDFEur Phys J C Part Fields
June 2018
The nuclear modification factors of and mesons are measured in collisions at a centre-of-mass energy per nucleon pair of . The analysis is based on and data samples collected by CMS at the LHC in 2015, corresponding to integrated luminosities of 464 and 28 , respectively. The measurements are performed in the dimuon rapidity range of as a function of centrality, rapidity, and transverse momentum ( ) from in the most forward region and up to 50 .
View Article and Find Full Text PDFMeasurements are presented of the lifetimes of the , , , and hadrons using the decay channels , , , , , and . The data sample, corresponding to an integrated luminosity of 19.7 , was collected by the CMS detector at the LHC in proton-proton collisions at .
View Article and Find Full Text PDFEur Phys J C Part Fields
November 2018
The production of a boson, decaying to two charged leptons, in association with jets in proton-proton collisions at a centre-of-mass energy of 13 is measured. Data recorded with the CMS detector at the LHC are used that correspond to an integrated luminosity of 2.19 .
View Article and Find Full Text PDFEur Phys J C Part Fields
November 2018
Measurements of and mesons are performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of , collected with the CMS detector at the LHC at a centre-of-mass energy of . The analysis studies -wave meson decays into and , where the and mesons are identified using the decays and . The masses of the -wave meson states are measured and the natural width of the state is determined.
View Article and Find Full Text PDFEur Phys J C Part Fields
November 2018
The mass of the top quark is measured using a sample of events collected by the CMS detector using proton-proton collisions at at the CERN LHC. Events are selected with one isolated muon or electron and at least four jets from data corresponding to an integrated luminosity of 35.9 .
View Article and Find Full Text PDFEur Phys J C Part Fields
September 2018
A search for pair production of heavy scalar leptoquarks (LQs), each decaying into a top quark and a lepton, is presented. The search considers final states with an electron or a muon, one or two leptons that decayed to hadrons, and additional jets. The data were collected in 2016 in proton-proton collisions at with the CMS detector at the LHC, and correspond to an integrated luminosity of 35.
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