537 research outputs found

    Pair production of heavy charged gauge bosons in pppp collisions at LHC

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    Two opposite charged new heavy gauge boson pair production at the Large Hadron Collider (LHC) is presented in this paper. These bosons are known as W‚Ä≤W^{'} boson due to the reason that it is the heavy version of Standard Model's weak force carrier, the WW boson. The production cross section and decay width in proton-proton (pppp) collision at \sqrts~= 8 TeV are calculated for different masses and coupling strengths of W‚Ä≤W^{'}. Efficiencies for different signal regions and branching ratios for different decay channels are computed. In this study, the pair production (W‚Ä≤+W‚Ä≤‚ąíW^{'^{+}}W^{'^{-}}) is considered in emerging new physics as a result of pppp collision at \sqrts~= 8 TeV at the LHC with final state containing two tau (ŌĄ\tau) leptons and two neutrinos (each W‚Ä≤W^{'} decay to ŌĄ\tau and its neutrino). The event selection efficiency similar to the CMS experiment is used for the mass of W‚Ä≤W^{'} to set lower limits for different coupling strengths of W‚Ä≤W^{'} and results are presented in this work. For heavy gauge bosons, when coupling strength is similar to that of Standard Model's WW boson, the mass of W‚Ä≤W^{'} below 305 GeV are excluded at confidence level of 95%95\%.Comment: 21 pages, 16 figure

    Effect of exogenous application of nicotinic acid on morpho-physiological characteristics of Hordeum vulgare L. under water stress

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    Abiotic stresses, such as high temperature and drought conditions, greatly influence the development of plants and the quality and quantity of products. Barley (Hordeum vulgare L.) crop production is largely impacted by drought, affecting growth, yield, and ultimately the productivity of the crop in hot arid/semi-arid conditions. The current pot experiment was directed to observe the outcome of nicotinic acid (NA) treatments on barley‚Äôs physiological, biochemical, and production attributes at two capacity levels, i.e., 100% normal range and withholding water stress. Randomized complete block design (RCBD) was used during the experimentation with the two-factor factorial arrangement. NA was applied exogenously by two different methods, i.e., foliar and soil application (fertigation). NA solution contained various application levels, such as T1 = control, foliar applications (T2 = 0.7368 gL‚ąí1, T3 = 1.477 gL‚ąí1, T4 = 2.2159 gL‚ąí1), and soil applications (T5 = 0.4924 gL‚ąí1, T6 = 0.9848 gL‚ąí1, and T7 = 1.4773 gL‚ąí1). Results depicted that, overall, foliar treatments showed better effects than control and soil treatments. Plant growth was preeminent under T4 treatment, such as plant height (71.07 cm), relative water content (84.0%), leaf water potential (39.73-MPa), leaf area index (36.53 cm2), biological yield (15.10 kgha‚ąí1), grain yield (14.40 kgha‚ąí1), harvest index (57.70%), catalase (1.54 mmolg‚ąí1FW‚ąí1), peroxidase (1.90 g‚ąí1FWmin‚ąí1), and superoxide dismutase (52.60 ¬ĶgFW‚ąí1) were superior under T4 treatment. Soil plant analysis development (54.13 ¬Ķgcm‚ąí2) value was also higher under T4 treatment and lowest under T7 treatment. In conclusion, NA-treated plants were more successful in maintaining growth attributes than non-treated plants; therefore, the NA foliar treatment at the rate of 2.2159 gL‚ąí1 is suggested to find economical crop yield under drought conditions. The present study would contribute significantly to improving the drought tolerance potential of barley through exogenous NA supply in water deficit areas

    Differential cross section measurements for the production of a W boson in association with jets in proton‚Äďproton collisions at ‚ąös = 7 TeV

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    Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript ‚ąí1]. The measured cross sections are compared to predictions from Monte Carlo generators, MadGraph + pythia and sherpa, and to next-to-leading-order calculations from BlackHat + sherpa. The differential cross sections are found to be in agreement with the predictions, apart from the pT distributions of the leading jets at high pT values, the distributions of the HT at high-HT and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio

    Juxtaposing BTE and ATE ‚Äď on the role of the European insurance industry in funding civil litigation