Publications by authors named "Barth C"

Article Synopsis
  • * The analysis focused on events containing one electron, one muon, and at least two jets, with one jet confirmed to come from a b quark.
  • * The resulting cross section measurement aligns with predictions from the standard model, confirming theoretical expectations.
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Charge-dependent azimuthal particle correlations with respect to the second-order event plane in p-Pb and PbPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV have been studied with the CMS experiment at the LHC. The measurement is performed with a three-particle correlation technique, using two particles with the same or opposite charge within the pseudorapidity range |η|<2.

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Objectives: We modelled human papilloma virus (HPV) primary screening scenarios compared with Pap cytology to evaluate clinical effectiveness and projected annual costs in Germany.

Study Design: A Markov cohort model was built to compare the budget impact of annual Pap cytology with different 5-yearly HPV screening scenarios: (1) a positive HPV test followed by Pap cytology; (2) a positive HPV test followed by p16/Ki-67 dual-stained cytology; (3) a positive HPV test followed by colposcopy if HPV-16/18-positive or p16/Ki-67 dual-stained cytology if positive for other subtypes; (4) co-testing with HPV and Pap. Screening scenarios were based on a 10-year horizon.

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The production cross section of a W boson in association with two b jets is measured using a sample of proton-proton collisions at [Formula: see text] collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8[Formula: see text].

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A measurement of the top quark pair production ([Formula: see text]) cross section in proton-proton collisions at the centre-of-mass energy of 8[Formula: see text] is presented using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.6[Formula: see text]. This analysis is performed in the [Formula: see text] decay channels with one isolated, high transverse momentum electron or muon and at least four jets, at least one of which is required to be identified as originating from hadronization of a b quark.

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Nerve damage remains a major morbidity following nerve sparing radical prostatectomy, significantly affecting quality of life post-surgery. Nerve-specific fluorescence guided surgery offers a potential solution by enhancing nerve visualization intraoperatively. However, the prostate is highly innervated and only the cavernous nerve structures require preservation to maintain continence and potency.

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Molecular probes that selectively highlight pancreatic cancer (PC) tissue have the potential to improve pancreatic ductal adenocarcinoma (PDAC) margin assessment through the selective highlighting of individual PC cells. Herein, we report a simple and unique family of systematically modified red and near-infrared fluorescent probes that exhibit a field-effect-derived redshift. Two of thirteen probes distributed to the normal mouse pancreas following systemic administration.

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A first search for pair production of dark matter candidates through vector boson fusion in proton-proton collisions at sqrt[s]=8  TeV is performed with the CMS detector. The vector boson fusion topology enhances missing transverse momentum, providing a way to probe supersymmetry, even in the case of a compressed mass spectrum. The data sample corresponds to an integrated luminosity of 18.

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A data sample of events from proton-proton collisions with two isolated same-sign leptons, missing transverse momentum, and jets is studied in a search for signatures of new physics phenomena by the CMS Collaboration at the LHC. The data correspond to an integrated luminosity of 35.9 , and a center-of-mass energy of 13 .

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A search for heavy resonances with masses above 1 , decaying to final states containing a vector boson and a Higgs boson, is presented. The search considers hadronic decays of the vector boson, and Higgs boson decays to b quarks. The decay products are highly boosted, and each collimated pair of quarks is reconstructed as a single, massive jet.

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Measurements of the associated production of a boson with at least one jet originating from a b quark in proton-proton collisions at are presented. Differential cross sections are measured with data collected by the CMS experiment corresponding to an integrated luminosity of 19.8 .

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A measurement is presented of the triple-differential dijet cross section at a centre-of-mass energy of 8 using 19.7 of data collected with the CMS detector in proton-proton collisions at the LHC. The cross section is measured as a function of the average transverse momentum, half the rapidity separation, and the boost of the two leading jets in the event.

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A search for new phenomena is performed using events with jets and significant transverse momentum imbalance, as inferred through the variable. The results are based on a sample of proton-proton collisions collected in 2016 at a center-of-mass energy of 13 with the CMS detector and corresponding to an integrated luminosity of 35.9 .

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Article Synopsis
  • - A study investigates potential excess events involving heavy-flavor quark pairs (such as b and c quarks) and significant transverse momentum imbalance from proton-proton collisions at a 13 TeV center-of-mass energy at the CERN LHC, using data collected with the CMS detector.
  • - The analysis finds no significant deviations from standard model predictions, meaning the results align with what is expected from current particle physics theories.
  • - This research contributes to dark matter understanding by interpreting its production in these heavy-flavor quark final states and combines multiple searches to create stronger exclusions than those from individual searches.
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Article Synopsis
  • Interaction mapping is a technique used to understand the role of proteins and their interactions, particularly focusing on the human AAA+ ATPase p97 and its link to 14 proteins.
  • The study found that the protein ASPL promotes the disassembly of p97 into stable complexes, which is crucial for understanding its function.
  • The research suggests that manipulating ASPL could lead to therapeutic strategies, including anti-cancer treatments, by targeting p97’s activity in cellular processes.
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Sex hormones fluctuate during the menstrual cycle. Evidence from animal studies suggests similar subtle fluctuations in hippocampal structure, predominantly linked to estrogen. Hippocampal abnormalities have been observed in several neuropsychiatric pathologies with prominent sexual dimorphism.

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Protein kinase A is a key mediator of cAMP signalling downstream of G-protein-coupled receptors, a signalling pathway conserved in all eukaryotes. cAMP binding to the regulatory subunits (PKAR) relieves their inhibition of the catalytic subunits (PKAC). Here we report that ARHGAP36 combines two distinct inhibitory mechanisms to antagonise PKA signalling.

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Introduction: Previous studies had enlisted renal medullary carcinoma (RMC) as the seventh nephropathy in sickle cell disease (SCD). Clinical experience has contradicted this claim and this study is targeted at refuting or supporting this assumption.

Objective: To estimate the prevalence of RMC and describe other renal complications in SCD.

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A search for the resonant production of high-mass photon pairs is presented. The analysis is based on samples of proton-proton collision data collected by the CMS experiment at center-of-mass energies of 8 and 13 TeV, corresponding to integrated luminosities of 19.7 and 3.

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Article Synopsis
  • A study was conducted on proton-proton collisions at 8 TeV to search for narrow resonances decaying into dijet final states, using data from the CMS detector with a total integrated luminosity of 18.8 fb^{-1}.
  • The researchers utilized a novel data scouting technique to efficiently collect large amounts of data by streamlining the event information, which enhanced the detection of low-mass resonances at a higher rate.
  • The analysis resulted in no evidence for narrow resonances in the dijet mass distribution, and upper limits on resonance cross sections and couplings, specifically for a leptophobic resonance Z_{B}^{'}, were established, surpassing previous experimental results for masses between 500 and 800 GeV.
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New sets of parameters ("tunes") for the underlying-event (UE) modelling of the pythia8, pythia6 and herwig++ Monte Carlo event generators are constructed using different parton distribution functions. Combined fits to CMS UE proton-proton ([Formula: see text]) data at [Formula: see text] and to UE proton-antiproton ([Formula: see text]) data from the CDF experiment at lower [Formula: see text], are used to study the UE models and constrain their parameters, providing thereby improved predictions for proton-proton collisions at 13[Formula: see text]. In addition, it is investigated whether the values of the parameters obtained from fits to UE observables are consistent with the values determined from fitting observables sensitive to double-parton scattering processes.

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The cross section for [Formula: see text] production in the all-jets final state is measured in pp collisions at a centre-of-mass energy of 8 [Formula: see text] at the LHC with the CMS detector, in data corresponding to an integrated luminosity of 18.4 [Formula: see text]. The inclusive cross section is found to be [Formula: see text] [Formula: see text].

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The optical properties of photonic crystals (PhCs) are strongly affected by their spatial symmetry characteristics. We observe anticrossing phenomena for large-area slab-type silicon PhCs sandwiched between a glass substrate and air. If a glass superstrate plus an index-matching fluid is added, thus establishing a mirror symmetry in z-direction, the anticrossing disappears.

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Results on two-particle angular correlations for charged particles produced in pp collisions at a center-of-mass energy of 13 TeV are presented. The data were taken with the CMS detector at the LHC and correspond to an integrated luminosity of about 270  nb^{-1}. The correlations are studied over a broad range of pseudorapidity (|η|<2.

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