R. Walsh
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View article: The effect of dataset construction and data pre-processing on the eXtreme Gradient Boosting algorithm applied to head rice yield prediction in Australia
The effect of dataset construction and data pre-processing on the eXtreme Gradient Boosting algorithm applied to head rice yield prediction in Australia Open
Dataset quality heavily impacts the predictive performance of data-driven modelling. This issue can be exacerbated in the prediction of agricultural production due to the complex interactions between the climate, the environment and the wa…
View article: Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at $$ \sqrt{s} $$ = 13 TeV
Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at $$ \sqrt{s} $$ = 13 TeV Open
View article: Comparing transverse momentum balance of b jet pairs in pp and PbPb collisions at $\\sqrt{s_\\mathrm{NN}} =$ 5.02 TeVC
Comparing transverse momentum balance of b jet pairs in pp and PbPb collisions at $\\sqrt{s_\\mathrm{NN}} =$ 5.02 TeVC Open
The transverse momentum balance of pairs of back-to-back b quark jets in PbPb and pp collisions recorded with the CMS detector at the LHC is reported. The center-of-mass energy in both collision systems is 5.02 TeV per nucleon pair. Compar…
View article: Search for higgsino pair production in pp collisions at $\\sqrt{s}$ = 13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via $\\mathrm{H} \\to\\mathrm{b}\\overline{\\mathrm{b}}$
Search for higgsino pair production in pp collisions at $\\sqrt{s}$ = 13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via $\\mathrm{H} \\to\\mathrm{b}\\overline{\\mathrm{b}}$ Open
Results are reported from a search for new physics in 13 TeV proton-proton collisions in the final state with large missing transverse momentum and two Higgs bosons decaying via $\\mathrm{H} \\to\\mathrm{b}\\overline{\\mathrm{b}}$. The sea…
View article: A search for Higgs boson pair production in the bbtautau final state in proton-proton collisions at sqrt(s) = 8 TeV
A search for Higgs boson pair production in the bbtautau final state in proton-proton collisions at sqrt(s) = 8 TeV Open
Results are presented from a search for production of Higgs boson pairs (HH) where one boson decays to a pair of b quarks and the other to a $\\tau$ lepton pair. This work is based on proton-proton collision data collected by the CMS exper…
View article: Test beam performance measurements for the Phase I upgrade of the CMS pixel detector
Test beam performance measurements for the Phase I upgrade of the CMS pixel detector Open
A new pixel detector for the CMS experiment was built in order to cope with the instantaneous luminosities anticipated for the Phase I Upgrade of the LHC . The new CMS pixel detector provides four-hit tracking with a reduced material budge…
View article: Measurement of $\\mathrm{B^{\\pm}}$ meson differential production cross sections in pp and PbPb collisions at $\\mathrm{\\sqrt{{s}_{NN}} =}$ 5.02 TeV
Measurement of $\\mathrm{B^{\\pm}}$ meson differential production cross sections in pp and PbPb collisions at $\\mathrm{\\sqrt{{s}_{NN}} =}$ 5.02 TeV Open
The differential production cross sections of B$^{\\pm}$ mesons are measured via the exclusive decay channels B$^{\\pm} \\to J/\\psi K^{\\pm} \\to \\mu^{+}\\mu^{-} K^{\\pm}$ as a function of transverse momentum in pp and PbPb collisions at…
View article: Measurement of differential cross sections in the $\phi^*$ variable for inclusive Z boson production in pp collisions at $\sqrt{s}=$ 8 TeV
Measurement of differential cross sections in the $\phi^*$ variable for inclusive Z boson production in pp collisions at $\sqrt{s}=$ 8 TeV Open
Measurements of differential cross sections d$\sigma$/d$\phi^*$ and double-differential cross sections d$^2\sigma$/d$\phi^*\,$d$|y|$ for inclusive Z boson production are presented using the dielectron and dimuon final states. The kinematic…
View article: Study of Jet Quenching with $Z+ext{jet}$ Correlations in Pb-Pb and $pp$ Collisions at ${\sqrt{s}}_{NN}=5.02ext{ }ext{ }\mathrm{TeV}
Study of Jet Quenching with $Z+ext{jet}$ Correlations in Pb-Pb and $pp$ Collisions at ${\sqrt{s}}_{NN}=5.02ext{ }ext{ }\mathrm{TeV} Open
View article: Measurement of normalized differential tt¯ cross sections in the dilepton channel from pp collisions at s√= 13 TeV
Measurement of normalized differential tt¯ cross sections in the dilepton channel from pp collisions at s√= 13 TeV Open
View article: Study of Bose-Einstein correlations in pp, pPb, and PbPb collisions at the LHC
Study of Bose-Einstein correlations in pp, pPb, and PbPb collisions at the LHC Open
Quantum statistical (Bose-Einstein) two-particle correlations are measured in pp collisions at $\sqrt{s}=$ 0.9, 2.76, and 7 TeV, as well as in pPb and peripheral PbPb collisions at nucleon-nucleon center-of-mass energies of 5.02 and 2.76 T…
View article: Measurements of the $\mathrm{ pp \to W \gamma\gamma }$ and $\mathrm{ pp \to Z \gamma\gamma }$ cross sections and limits on anomalous quartic gauge couplings at $\sqrt{s} =$ 8 TeV
Measurements of the $\mathrm{ pp \to W \gamma\gamma }$ and $\mathrm{ pp \to Z \gamma\gamma }$ cross sections and limits on anomalous quartic gauge couplings at $\sqrt{s} =$ 8 TeV Open
Measurements are presented of $ \mathrm{ W \gamma\gamma } $ and $ \mathrm{ Z \gamma\gamma } $ production in proton-proton collisions. Fiducial cross sections are reported based on a data sample corresponding to an integrated luminosity of …
View article: Measurement of inclusive jet cross sections in $pp$ and PbPb collisions at $\sqrt[]{s_{NN}}$ = 2.76 TeV
Measurement of inclusive jet cross sections in $pp$ and PbPb collisions at $\sqrt[]{s_{NN}}$ = 2.76 TeV Open
Inclusive jet spectra from pp and PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV, collected with the CMS detector at the LHC, are presented. Jets are reconstructed with three different distance parameters for transv…
View article: Search for CP violation in top quark-antiquark production and decay in proton-proton collisions at sqrt(s) = 8 TeV
Search for CP violation in top quark-antiquark production and decay in proton-proton collisions at sqrt(s) = 8 TeV Open
The results of a first search for CP violation in the production and decay of top quark-antiquark (ttbar) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversa…
View article: Measurements of the performance of a beam condition monitor prototype in a 5 GeV electron beam
Measurements of the performance of a beam condition monitor prototype in a 5 GeV electron beam Open
View article: New Fast Beam Conditions Monitoring (BCM1F) system for CMS
New Fast Beam Conditions Monitoring (BCM1F) system for CMS Open
The CMS Beam Radiation Instrumentation and Luminosity (BRIL) project is composed of several systems providing the experiment protection from adverse beam conditions while also measuring the online luminosity and beam background. Although t…
View article: Search for Higgs Boson Production in Final States with b- Quarks with the LHC Run II data
Search for Higgs Boson Production in Final States with b- Quarks with the LHC Run II data Open
The discovery of a 125 GeV Higgs boson in July 2012 was a huge milestone for particle physics. While the properties of this particle agree with the predictions of the Standard Model at the current precision of measurements, it could well b…
View article: Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at $\\sqrt{s}_{NN} =$ 2.76 TeV
Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at $\\sqrt{s}_{NN} =$ 2.76 TeV Open
Interactions between jets and the quark-gluon plasma produced in heavy ion collisions are studied via the angular distributions of summed charged-particle transverse momenta $(p_T)$ with respect to both the leading and subleading jet axes …
View article: Search for new physics with the $\mathrm{M_{T2}}$ variable in all-jets final states produced in pp collisions at $\mathrm{\sqrt{s} = 13 TeV}$
Search for new physics with the $\mathrm{M_{T2}}$ variable in all-jets final states produced in pp collisions at $\mathrm{\sqrt{s} = 13 TeV}$ Open
A search for new physics is performed using events that contain one or more jets, no isolated leptons, and a large transverse momentum imbalance, as measured through the MT2 variable, which is an extension of the transverse mass in events …
View article: Upgraded Fast Beam Conditions Monitor for CMS online luminosity measurement
Upgraded Fast Beam Conditions Monitor for CMS online luminosity measurement Open
The CMS beam condition monitoring subsystem BCM1F during LHC Run I consisted of 8 individual diamond sensors situated around the beam pipe within the tracker detector volume, for the purpose of fast monitoring of beam background and collis…
View article: Architecture of the upgraded BCM1F backend electronics for Beam Conditions and Luminosity measurement
Architecture of the upgraded BCM1F backend electronics for Beam Conditions and Luminosity measurement Open
The Beam Radiation Instrumentation and Luminosity Project of the CMS experiment, consists of several beam monitoring systems. One system, the upgraded Fast Beams Condition Monitor, is based on 24 single crystal CVD diamonds with a double-p…