E. Gülmez
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View article: Performance of the new CMS-HF Online Radiation Damage Monitoring System
Performance of the new CMS-HF Online Radiation Damage Monitoring System Open
The CMS-HF Calorimeter is designed to detect forward going particles. Discovery type events are believed to produce high energy particles going at forward angles. Hence, it is important to determine the particle energies accurately by maki…
View article: Chemical enrichment of isolated relic galaxy Mrk1216
Chemical enrichment of isolated relic galaxy Mrk1216 Open
In this study, we investigate the chemical enrichment and structural evolution of the isolated elliptical relic galaxy Mrk1216 through X-ray observations. As a red-nugget relic, Mrk1216 provides a rare window into the early Universe, owing…
View article: Q-Wall, a Novel Quartz-Cherenkov Calorimeter Concept
Q-Wall, a Novel Quartz-Cherenkov Calorimeter Concept Open
Future collider experiments and the upgrade of the existing large-scale experiments impose unprece-dented radiation conditions for the calorimeter systems, particularly in the forward region. The calorimeters envisaged for these operating …
View article: Commissioning Results of the CMS-HF Online Radiation Damage Monitoring System and Implications for Run III
Commissioning Results of the CMS-HF Online Radiation Damage Monitoring System and Implications for Run III Open
The CMS-HF calorimeter uses quartz fibers as active elements to measure the energy of the particles. Since the CMS-HF detector is in a high radiation area, radiation effects decrease the performance of the detector by gradually damaging th…
View article: Observation of $\mathrm{B^{0}_{s}}$ mesons and measurement of the $\mathrm{B^{0}_{s}}/\mathrm{B^{+}}$ yield ratio in PbPb collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 5.02 TeV
Observation of $\mathrm{B^{0}_{s}}$ mesons and measurement of the $\mathrm{B^{0}_{s}}/\mathrm{B^{+}}$ yield ratio in PbPb collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 5.02 TeV Open
The $\\mathrm{B^{0}_{s}}$ and $\\mathrm{B^{+}}$ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integ…
View article: Measurement of the inclusive and differential $\mathrm{t\bar{t}}\gamma$ cross sections in the single-lepton channel and EFT interpretation at $\sqrt{s} = $ 13 TeV
Measurement of the inclusive and differential $\mathrm{t\bar{t}}\gamma$ cross sections in the single-lepton channel and EFT interpretation at $\sqrt{s} = $ 13 TeV Open
The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set, corresponding to an integrated luminosity of 137 fb$^{-1}$, was recor…
View article: Measurements of the ${\mathrm{p}}{\mathrm{p}}\to\mathrm{W^{\pm}}\gamma\gamma$ and ${\mathrm{p}}{\mathrm{p}}\to\mathrm{Z}\gamma\gamma$ cross sections at $\sqrt s = $ 13 TeV and limits on anomalous quartic gauge couplings
Measurements of the ${\mathrm{p}}{\mathrm{p}}\to\mathrm{W^{\pm}}\gamma\gamma$ and ${\mathrm{p}}{\mathrm{p}}\to\mathrm{Z}\gamma\gamma$ cross sections at $\sqrt s = $ 13 TeV and limits on anomalous quartic gauge couplings Open
The cross section for W or Z boson production in association with two photons is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data set corresponds to an integrated luminosity of 137 fb$^{-1}$ collected by …
View article: Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at $\sqrt{s}$ = 13 TeV
Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at $\sqrt{s}$ = 13 TeV Open
A measurement of the top quark mass is performed using a data sample enriched with single top quark events produced in the $t$ channel. The study is based on proton-proton collision data, corresponding to an integrated luminosity of 35.9 f…
View article: Measurement of differential $\text{t}\overline{\text{t}}$ production cross sections in the full kinematic range using lepton+jets events from proton-proton collisions at $\sqrt{s} = $ 13 TeV
Measurement of differential $\text{t}\overline{\text{t}}$ production cross sections in the full kinematic range using lepton+jets events from proton-proton collisions at $\sqrt{s} = $ 13 TeV Open
Measurements of differential and double-differential cross sections of top quark pair ($\text{t}\overline{\text{t}}$) production are presented in the lepton+jets channels with a single electron or muon and jets in the final state. The anal…
View article: Measurement of the inclusive and differential Higgs boson production cross sections in the decay mode to a pair of $\tau$ leptons in pp collisions at $\sqrt{s} = $ 13 TeV
Measurement of the inclusive and differential Higgs boson production cross sections in the decay mode to a pair of $\tau$ leptons in pp collisions at $\sqrt{s} = $ 13 TeV Open
Measurements of the inclusive and differential fiducial cross sections of the Higgs boson are presented, using the $\tau$ lepton decay channel. The differential cross sections are measured as functions of the Higgs boson transverse momentu…
View article: Search for strong electric fields in PbPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV using azimuthal anisotropy of prompt $\mathrm{D}^0$ and $\overline{\mathrm{D}}^0$ mesons
Search for strong electric fields in PbPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV using azimuthal anisotropy of prompt $\mathrm{D}^0$ and $\overline{\mathrm{D}}^0$ mesons Open
The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity-dependent difference ($\Delta v_2$) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, $v_2$) between…
View article: Operational Experience with the CMS Hadron Forward Calorimeters Phase I Upgrade
Operational Experience with the CMS Hadron Forward Calorimeters Phase I Upgrade Open
The Phase I Upgrade of the CMS Hadron Forward Calorimeters was completed during the Extended Year End Technical Stop of 2016 - 2017. In the framework of the upgrade, the front-end electronics were replaced and the PMT boxes were reworked t…
View article: Performance of the CMS-HF Calorimeter After Phase I Upgrade
Performance of the CMS-HF Calorimeter After Phase I Upgrade Open
CMS-HF Calorimeters have been improved substantially within the Phase I upgrade program. The changes that were finalized during Extended Year End Technical Stop of 2016 - 2017 involved the replacement of the single anode PMTs with the four…
View article: CMS-HF Calorimeter Upgrade for Run II
CMS-HF Calorimeter Upgrade for Run II Open
CMS-HF Calorimeters have been undergoing a major upgrade for the last couple of years to alleviate the problems encountered during Run I, especially in the PMT and the readout systems. In this poster, the problems caused by the old PMTs in…
View article: Phase1 upgrade of the CMS-HF Calorimeter
Phase1 upgrade of the CMS-HF Calorimeter Open
In this presentation, results of the Phase I upgrade of the CMS Hadron Forward Calorimeter (HF) are discussed. The CMS-HF Calorimeter was using regular PMTs. Cherenkov light produced in the quartz fibers embedded in the iron absorber was r…