STUDIES UPON THE DEVELOPMENT OF AN INTEGRATE SYSTEM FOR PRODUCTION AND USE OF CAMELINA SATIVA IN THE TRANSYLVANIAN PLAIN CONDITIONS (I)

The present paper is the first part of a series dedicated to the development of an integrate system for production and use of Camelina Sativa. There will be studied during a five years research programme the optimum crop technologies for the Transylvanian Plain conditions, together with the best use of the crop. The agricultural year 2011-2012 was characterized by being very dry. The first experimental results were encouraging, demonstrating that Camelina sativa is not claiming special cropping conditions, being suitable for the Transylvanian Plain area. The best results (1,95 t/ha) were achieved using a 176 plants/m2 density and a ration N/P/K of 100/66,8/40 (25 cm between the rows). Harvesting one of the most important parts of the technological chain, as it could lead to high yield losses without and accurate adjustment of the combine.

A search for new physics in central exclusive production using the missing mass technique with the CMS detector and the CMS-TOTEM precision proton spectrometer

A generic search is presented for the associated production of a Z boson or a photon with an additional unspecified massive particle X, pp → pp + Z/γ + X, in proton-tagged events from proton–proton collisions at √s = 13 TeV, recorded in 2017 with the CMS detector and the CMS-TOTEM precision proton spectrometer. The missing mass spectrum is analysed in the 600–1600 GeV range and a fit is performed to search for possible deviations from the background expectation. No significant excess in data with respect to the background predictions has been observed. odelindependent upper limits on the visible production cross section of pp → pp + Z/γ + X are set

Proton reconstruction with the CMS-TOTEM Precision Proton Spectrometer

The Precision Proton Spectrometer (PPS) of the CMS and TOTEM experiments collected 107.7 fb-1 in proton-proton (pp) collisions at the LHC at 13 TeV (Run 2). This paper describes the key features of the PPS alignment and optics calibrations, the proton reconstruction procedure, as well as the detector efficiency and the performance of the PPS simulation. The reconstruction and simulation are validated using a sample of (semi)exclusive dilepton events. The performance of PPS has proven the feasibility of continuously operating a near-beam proton spectrometer at a high luminosity hadron collider

Observation of Same-Sign WW Production from Double Parton Scattering in Proton-Proton Collisions at √s = 13 TeV

The first observation of the production of W±W± bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138  fb−1 recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign W bosons decaying leptonically is 80.7±11.2(stat) +9.5−8.6(syst)±12.1(model)  fb, whereas the measured fiducial cross section is 6.28±0.81(stat)±0.69(syst)±0.37(model)  fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis

Probing Heavy Majorana Neutrinos and the Weinberg Operator through Vector Boson Fusion Processes in Proton-Proton Collisions at √s = 13 TeV

The first search exploiting the vector boson fusion process to probe heavy Majorana neutrinos and the Weinberg operator at the LHC is presented. The search is performed in the same-sign dimuon final state using a proton-proton collision dataset recorded at √s=13  TeV, collected with the CMS detector and corresponding to a total integrated luminosity of 138  fb−1. The results are found to agree with the predictions of the standard model. For heavy Majorana neutrinos, constraints on the squared mixing element between the muon and the heavy neutrino are derived in the heavy neutrino mass range 50 GeV–25 TeV; for masses above 650 GeV these are the most stringent constraints from searches at the LHC to date. A first test of the Weinberg operator at colliders provides an observed upper limit at 95% confidence level on the effective μμ Majorana neutrino mass of 10.8 GeV

Searches for additional Higgs bosons and for vector leptoquarks in ττ final states in proton-proton collisions at s \sqrt{s} = 13 TeV

Three searches are presented for signatures of physics beyond the standard model (SM) in ττ final states in proton-proton collisions at the LHC, using a data sample collected with the CMS detector at $\sqrt{s} = 13 TeV$, corresponding to an integrated luminosity of 138 fb$^{−1}$. Upper limits at 95% confidence level (CL) are set on the products of the branching fraction for the decay into $τ$ leptons and the cross sections for the production of a new boson $ϕ$, in addition to the H(125) boson, via gluon fusion $(ggϕ)$ or in association with b quarks, ranging from $O(10 pb)$ for a mass of $60 GeV$ to 0.3 fb for a mass of $3.5 TeV$ each. The data reveal two excesses for $ggϕ$ production with local $p$-values equivalent to about three standard deviations at $mϕ = 0.1$ and $1.2 TeV$. In a search for $t$-channel exchange of a vector leptoquark $U_1$, 95% CL upper limits are set on the dimensionless $U_1$ leptoquark coupling to quarks and $τ$ leptons ranging from 1 for a mass of $1 TeV$ to 6 for a mass of $5 TeV$, depending on the scenario. In the interpretations of the $M^{125}_h$ and $M^{125}_{h,EFT}$ minimal supersymmetric SM benchmark scenarios, additional Higgs bosons with masses below $350 GeV$ are excluded at 95% CL

Measurement of the Higgs boson inclusive and differential fiducial production cross sections in the diphoton decay channel with pp collisions at s \sqrt{s} = 13 TeV

The measurements of the inclusive and differential fiducial cross sections of the Higgs boson decaying to a pair of photons are presented. The analysis is performed using proton-proton collisions data recorded with the CMS detector at the LHC at a centre-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 137 fb$^{−1}$. The inclusive fiducial cross section is measured to be $σ_{fid}$=73.4$^{+5.4}_{−5.3}$(stat)$^{+2.4}_{−2.2}$(syst) fb, in agreement with the standard model expectation of 75.4 ± 4.1 fb. The measurements are also performed in fiducial regions targeting different production modes and as function of several observables describing the diphoton system, the number of additional jets present in the event, and other kinematic observables. Two double differential measurements are performed. No significant deviations from the standard model expectations are observed

Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at s \sqrt{s} = 13 TeV

The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of s√ = 13 TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb−1. A 95% confidence level upper limit of 32.4 is set on the signal strength modifier μ, defined as the ratio of the observed HH production rate in the HH→ZZ∗bb¯¯¯→4ℓbb¯¯¯ decay channel to the standard model (SM) expectation. Possible modifications of the H trilinear coupling λHHH with respect to the SM value are investigated. The coupling modifier κλ, defined as λHHH divided by its SM prediction, is constrained to be within the observed (expected) range −8.8 (−9.8) < κλ < 13.4 (15.0) at 95% confidence level