3,415 research outputs found
Unparticle physics in diphoton production at the CERN LHC
We have considered the di-photon production with unparticle at LHC. The
contributions of spin-0 and spin-2 unparticle to the di-photon production are
studied in the invariant mass and other kinematical distributions, along with
their dependencies on the model dependent parameters. The signal corresponding
to the unparticle is significant for moderate coupling constant values.Comment: 17 pages, 15 eps figure
Pseudo-scalar Higgs Boson Production at Threshold NLO and NLL QCD
We present the first results on the production of pseudo-scalar through gluon
fusion at the LHC to NLO in QCD taking into account only soft gluon
effects. We have used the effective Lagrangian that describes the coupling of
pseudo-scalar with the gluons in the large top quark mass limit. We have used
recently available quantities namely the three loop pseudo-scalar form factor
and the third order universal soft function in QCD to achieve this. Along with
the fixed order results, we also present the process dependent resummation
coefficient for threshold resummation to NLL in QCD. Phenomenological
impact of these threshold NLO corrections to pseudo-scalar production at
the LHC is presented and their role to reduce the renormalisation scale
dependence is demonstrated.Comment: 34 pages, 17 figure
Influence of moisture management finish on comfort characteristics of knitted fabrics made from different yarns
102-108The influence of moisture management finish on comfort characteristics of knitted fabrics made from five different yarns has been studied in order to find out their level of performance. In order to study this effect, five types of yarns, namely microdenier polyester, spun polyester, polyester / cotton, filament polyester and 100% cotton, have been converted to knitted fabrics. It is observed that microdenier polyester fabrics having high wicking action and quicker moisture evaporation show superior performance with respect to comfort characteristics
Influence of moisture management finish on comfort characteristics of knitted fabrics made from different yarns
The influence of moisture management finish on comfort characteristics of knitted fabrics made from five different yarns has been studied in order to find out their level of performance. In order to study this effect, five types of yarns, namely microdenier polyester, spun polyester, polyester / cotton, filament polyester and 100% cotton, have been converted to knitted fabrics. It is observed that microdenier polyester fabrics having high wicking action and quicker moisture evaporation show superior performance with respect to comfort characteristic
Pseudo-scalar Higgs boson production at NLO+NLL
We consider the production of a pseudo-scalar particle at the LHC, and
present accurate theoretical predictions for its inclusive cross section in
gluon fusion. The prediction is based on combining fixed-order perturbation
theory and all-order threshold resummation. At fixed order we include the exact
next-to-next-to-leading order (NNLO) plus an approximate
next-to-next-to-next-to-leading order (NLO) which is based on the
recent computation at this order for the scalar case. We then add threshold
resummation at next-to-next-to-next-to leading logarithmic accuracy
(NLL). Various forms of threshold resummation are considered,
differing by the treatment of subleading terms, allowing a robust estimate of
the theoretical uncertainties due to missing higher orders. With particular
attention to pseudo-scalar masses of GeV and GeV, we also observe
that perturbative convergence is much improved when resummation is included.
Additionally, results obtained with threshold resummation in direct QCD are
compared with analogous results as computed in soft-collinear effective theory,
which turn out to be in good agreement. We provide precise predictions for
pseudo-scalar inclusive cross section at TeV LHC for a wide range of
masses. The results are available through updated versions of the public codes
ggHiggs and TROLL.Comment: 14 pages, 7 figures, 1 table. Now includes a more precise assessment
of the uncertainty on the approximate N3LO. Final version accepted by EPJ
Extra dimension searches at hadron colliders to next-to-leading order-QCD
The quantitative impact of NLO-QCD corrections for searches of large and warped extra dimensions at hadron colliders are investigated for the Drell-Yan process. The K-factor for various observables at hadron colliders are presented. Factorisation, renormalisation scale dependence and uncertainties due to various parton distribution functions are studied. Uncertainties arising from the error on experimental data are estimated using the MRST parton distribution functions
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Responses of Soybean to Water Stress and Supplemental Irrigation in Upper Indo-Gangetic Plain: Field Experiment and Modeling Approach
Understanding better the impacts of extreme dry spell regimes is essential for optimizing water management under a changing and variable climate. Using field experiments and modeling studies, we examined the impacts of dry spells in soybean and identified better management of water resources under varying water-scarce conditions. Field experimental data from soybean (PUSA-2614) experiments (July-Oct 2014; IARI, New Delhi, India) were used to calibrate and validate InfoCrop-Soybean model. This model was used to simulate optimal timing of irrigation under different dry spell scenarios. Results showed that plants subjected to water stress during flowering and vegetative growth stages had significantly lower yields and total dry matter (TDM). Supplemental irrigation significantly increased TDM and yields. InfoCrop-Soybean could simulate plant responses to water stress, at various stages of crop growth, and to supplemental irrigation, with acceptable accuracy. The crop model was further used to simulate impacts of dry spells at different intensities and durations on soybean growth and yields by creating drought scenarios for the New Delhi region using 36 years of weather data (1978–2014). Simulations showed that a 20% reduction in rainfall during any fortnight (every 15th day) of the cropping season does not affect crop yield significantly. However, dry spells (50% reduction in rainfall or more) in August and early September led to reduced yields, while supplemental irrigation during those dry spells could reduce yield losses. We envisage that the results of this study can help better manage water in soybean cultivation under dryland condition
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