We present the structure-dependent nonlinear optical (NLO) properties of fully conjugated tri(perylene bisimides) (triPBIs) toward the understanding of the role of conformational flexibility and pi-electron conjugation in molecular NLO properties of model graphene-nanoribbon (GNR)-like molecules. In the present paper, we report the NLO absorption properties of the triPBIs in toluene excited at ...

We present the analytical results for the K → 3π final state interactions at next-to-leading order (NLO) in CHPT. We also study the recent Cabibbo’s proposal to measure the ππ scattering lenghts combination a0 − a2 from the cusp effect in the π0π0 energy spectrum at threshold for K+ → π+π0π0 and KL → π0π0π0, and give the relevant formulas to describe it at NLO. For that, we use the NLO CHPT exp...

We study jet physics in the high energy regime of QCD. Based on the NLO BFKL equation, we construct a vertex for the production of a jet at central rapidity in kT -factorization. A jet algorithm is introduced, and we take special care of the separation of multi-Regge and quasi-multi-Regge kinematics. The connection with the energy scale of the evolution is investigated in detail. The result is ...

We investigate spin-dependent parton distributions in the polarized virtual photon target in perturbative QCD up to the next-to-leading order (NLO). In the case Λ ≪ P 2 ≪ Q, where −Q (−P ) is the mass squared of the probe (target) photon, parton distributions can be predicted completely up to NLO, but they are factorization-schemedependent. We analyze parton distributions in six different facto...

We investigate the thermodynamics of a pion gas within the O(N) model in the 1/N expansion. Using the auxiliary field technique, we compute the effective potential up to the next-to-leading order (NLO) and show that it can be renormalized in a temperature-independent manner. The crucial step for the consistency of the calculation turns out to be the elimination of the auxiliary field prior to r...

The electroweak production of single top quarks, despite being smaller in rate than it’s strong interaction counterpart — tt̄ pair production, offers many physics possibilities for the Tevatron Run II and the LHC. Direct measurement of |Vtb|2 and sensitivity beyond the Standard Model are two examples . It is also a background to some signals for the Higgs boson and various types of new physics. ...

We report the full characterization of a new organic nonlinear optical (NLO) crystal for intense THz generation: PNPA ((E)-4-((4-nitrobenzylidene)amino)-N-phenylaniline). discuss growth and structural characteristics. present wavelength dependence generation, thickness spectrum crystals, measure efficiency. enables generation that surpasses NLO crystals DAST OH-1, which have been standard in hi...

Limiting devices protect sensitive optical elements from laser-induced damage (LID). Passive devices use focusing optics to concentrate the light through a nonlinear optical (NLO) element (or elements) to reduce the limiting threshold. Unfortunately, these NLO elements may themselves undergo LID for high inputs, restricting the useful dynamic range (DR). Recently, efforts at optimizing this DR ...

Neutrino induced deep inelastic charm production off strange sea partons in the nucleon is studied in the framework of the MS fixed flavor factorization scheme. The momentum (z) distributions of the produced D mesons as calculated in the next–to–leading order QCD analysis are presented and compared to their leading order counterparts. Perturbative stability within this formalism is demonstrated...