812 research outputs found

    ICT for Transfer of Technology in Livestock Management ICT FOR TRANSFER OF TECHNOLOGY IN LIVESTOCK MANAGEMENT

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    ABSTRACT The dairy sector in India plays a pivotal role in upliftment of socio-economic and employment generation for rural households. India is the top milk producing nation in the world contributing about 15% to the global milk pool. In the ongoing decade (2000 onwards) the compound growth rate of milk production has been more than 3.5% per annum. The contribution of agriculture and allied sectors is about 14.20% of total GDP while livestock sector alone is contributing about 32% of agriculture. Information and Communication Technology (ICT) in the operational process, rural development, communication, just in time services plays the major roles in fulfilling the needs to achieve the productivity of their services and products. Hence, the only alternative to empower the villages is to use ICT tools to bridge the gaps in adoption of recommended new technologies. The ICTs include community radio and television, cellular-telephony, use of computing devices, digital imaging, the Internet and Wide Area Networking (WAN), Wi-Fi and Mixed Media. The use of ICT to contribute for sustainable growth in livestock production in India is not a matter of providing computers and Internet connectivity or computerization of livestock research and development institutions. Krishi Vigyan Kendra is very important base for transfer of technology from laboratory to farmers' field with respect to agricultural and allied subjects. The KVK model is aimed to provide timely and appropriate technical advice to the needed farmers on need basis. The modern information tools viz., mobile, lap-top and internet, agri-portal system through internet, market price information system through mobile phone are the key ICT based technologies delivered to the farmers and timely information/advices are communicating as per the need of the situation

    Impact of magnetic field on the stability of the CMS GE1/1 GEM detector operation

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    The Gas Electron Multiplier (GEM) detectors of the GE1/1 station of the CMS experiment have been operated in the CMS magnetic field for the first time on the 7th^{th} of October 2021. During the magnetic field ramps, several discharge phenomena were observed, leading to instability in the GEM High Voltage (HV) power system. In order to reproduce the behavior, it was decided to conduct a dedicated test at the CERN North Area with the Goliath magnet, using four GE1/1 spare chambers. The test consisted in studying the characteristics of discharge events that occurred in different detector configurations and external conditions. Multiple magnetic field ramps were performed in sequence: patterns in the evolution of the discharge rates were observed with these data. The goal of this test is the understanding of the experimental conditions inducing discharges and short circuits in a GEM foil. The results of this test lead to the development of procedure for the optimal operation and performance of GEM detectors in the CMS experiment during the magnet ramps. Another important result is the estimation of the probability of short circuit generation, at 68 % confidence level, pshort_{short}HV^{HV} OFF^{OFF} = 0.42−0.35+0.94^{-0.35+0.94}% with detector HV OFF and pshort_{short}HV^{HV} OFF^{OFF} < 0.49% with the HV ON. These numbers are specific for the detectors used during this test, but they provide a first quantitative indication on the phenomenon, and a point of comparison for future studies adopting the same procedure

    Benchmarking LHC background particle simulation with the CMS triple-GEM detector

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    In 2018, a system of large-size triple-GEM demonstrator chambers was installed in the CMS experiment at CERN\u27s Large Hadron Collider (LHC). The demonstrator\u27s design mimicks that of the final detector, installed for Run-3. A successful Monte Carlo (MC) simulation of the collision-induced background hit rate in this system in proton-proton collisions at 13 TeV is presented. The MC predictions are compared to CMS measurements recorded at an instantaneous luminosity of 1.5 ×1034^{34} cm−2^{-2} s−1^{-1}. The simulation framework uses a combination of the FLUKA and GEANT4 packages. FLUKA simulates the radiation environment around the GE1/1 chambers. The particle flux by FLUKA covers energy spectra ranging from 10−11^{-11} to 104^{4} MeV for neutrons, 10−3^{-3} to 104^{4} MeV for Îł\u27s, 10−2^{-2} to 104^{4} MeV for e±^{±}, and 10−1^{-1} to 104^{4} MeV for charged hadrons. GEANT4 provides an estimate of the detector response (sensitivity) based on an accurate description of the detector geometry, the material composition, and the interaction of particles with the detector layers. The detector hit rate, as obtained from the simulation using FLUKA and GEANT4, is estimated as a function of the perpendicular distance from the beam line and agrees with data within the assigned uncertainties in the range 13.7-14.5%. This simulation framework can be used to obtain a reliable estimate of the background rates expected at the High Luminosity LHC

    Modeling the triple-GEM detector response to background particles for the CMS Experiment

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    An estimate of environmental background hit rate on triple-GEM chambers is performed using Monte Carlo (MC) simulation and compared to data taken by test chambers installed in the CMS experiment (GE1/1) during Run-2 at the Large Hadron Collider (LHC). The hit rate is measured using data collected with proton-proton collisions at 13 TeV and a luminosity of 1.5×1034\times10^{34} cm−2^{-2} s−1^{-1}. The simulation framework uses a combination of the FLUKA and Geant4 packages to obtain the hit rate. FLUKA provides the radiation environment around the GE1/1 chambers, which is comprised of the particle flux with momentum direction and energy spectra ranging from 10−1110^{-11} to 10410^{4} MeV for neutrons, 10−310^{-3} to 10410^{4} MeV for Îł\gamma's, 10−210^{-2} to 10410^{4} MeV for e±e^{\pm}, and 10−110^{-1} to 10410^{4} MeV for charged hadrons. Geant4 provides an estimate of detector response (sensitivity) based on an accurate description of detector geometry, material composition and interaction of particles with the various detector layers. The MC simulated hit rate is estimated as a function of the perpendicular distance from the beam line and agrees with data within the assigned uncertainties of 10-14.5%. This simulation framework can be used to obtain a reliable estimate of background rates expected at the High Luminosity LHC.Comment: 16 pages, 9 figures, 6 table

    Search for a vector-like quark Tâ€Č → tH via the diphoton decay mode of the Higgs boson in proton-proton collisions at s \sqrt{s} = 13 TeV

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    A search for the electroweak production of a vector-like quark Tâ€Č, decaying to a top quark and a Higgs boson is presented. The search is based on a sample of proton-proton collision events recorded at the LHC at = 13 TeV, corresponding to an integrated luminosity of 138 fb−1. This is the first Tâ€Č search that exploits the Higgs boson decay to a pair of photons. For narrow isospin singlet Tâ€Č states with masses up to 1.1 TeV, the excellent diphoton invariant mass resolution of 1–2% results in an increased sensitivity compared to previous searches based on the same production mechanism. The electroweak production of a Tâ€Č quark with mass up to 960 GeV is excluded at 95% confidence level, assuming a coupling strength ÎșT = 0.25 and a relative decay width Γ/MTâ€Č < 5%

    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

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    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^{−1}. The inclusive fiducial cross section is measured to be σfidσ_{fid}=73.4−5.3+5.4^{+5.4}_{−5.3}(stat)−2.2+2.4^{+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

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

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    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 ΌΌ Majorana neutrino mass of 10.8 GeV

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

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    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

    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

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    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^{−1}. The inclusive fiducial cross section is measured to be σfidσ_{fid}=73.4−5.3+5.4^{+5.4}_{−5.3}(stat)−2.2+2.4^{+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

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

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    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 s=13TeV\sqrt{s} = 13 TeV, corresponding to an integrated luminosity of 138 fb−1^{−1}. Upper limits at 95% confidence level (CL) are set on the products of the branching fraction for the decay into ττ leptons and the cross sections for the production of a new boson ϕϕ, in addition to the H(125) boson, via gluon fusion (ggϕ)(ggϕ) or in association with b quarks, ranging from O(10pb)O(10 pb) for a mass of 60GeV60 GeV to 0.3 fb for a mass of 3.5TeV3.5 TeV each. The data reveal two excesses for ggϕggϕ production with local pp-values equivalent to about three standard deviations at mϕ=0.1mϕ = 0.1 and 1.2TeV1.2 TeV. In a search for tt-channel exchange of a vector leptoquark U1U_1, 95% CL upper limits are set on the dimensionless U1U_1 leptoquark coupling to quarks and ττ leptons ranging from 1 for a mass of 1TeV1 TeV to 6 for a mass of 5TeV5 TeV, depending on the scenario. In the interpretations of the Mh125M^{125}_h and Mh,EFT125M^{125}_{h,EFT} minimal supersymmetric SM benchmark scenarios, additional Higgs bosons with masses below 350GeV350 GeV are excluded at 95% CL
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