1,385 research outputs found
SHORT-RANGE N-N INTERACTION IN THE CHIRAL BAG MODEL
No full textPhysics, MultidisciplinarySCI(E)0ARTICLE3329-3371
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector
No full textA search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1 fb−1 of proton–proton collision data at s=13TeV collected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. The particle X is assumed to decay to a pair of light quarks, and the fully hadronic final state XH→qq¯′bb¯ is analysed. The search considers the regime of high XH resonance masses, where the X and H bosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. A two-dimensional phase space of XH mass versus X mass is scanned for evidence of a signal, over a range of XH resonance mass values between 1 TeV and 4 TeV, and for X particles with masses from 50 GeV to 1000 GeV. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XH and X masses, on the production cross-section of the XH→qq¯′bb¯ resonance. © 2018 The Author(s)WosScopu
A search for resonances decaying into a Higgs boson and a new particle X in the XH -> qqbb final state with the ATLAS detector
No full textA search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1 fb(-1) of proton-proton collision data at root s = 13 TeV collected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. The particle Xis assumed to decay to a pair of light quarks, and the fully hadronic final state XH -> q (q) over bar 'b (b) over bar is analysed. The search considers the regime of high XH resonance masses, where the X and H bosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. A two-dimensional phase space of XH mass versus X mass is scanned for evidence of a signal, over a range of XH resonance mass values between 1 TeV and 4 TeV, and for X particles with masses from 50 GeV to 1000 GeV. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XH and X masses, on the production cross-section of the XH -> q (q) over bar 'b (b) over bar resonance. (c) 2018 The Author(s). Published by Elsevier B.V
A Search for Resonances Decaying Into a Higgs Boson and a New Particle X in the Xh › Qqbb Final State With the Atlas Detector
No full textA search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1 fb−1 of proton–proton collision data at s=13TeV collected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. The particle X is assumed to decay to a pair of light quarks, and the fully hadronic final state XH→qq¯′bb¯ is analysed. The search considers the regime of high XH resonance masses, where the X and H bosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. A two-dimensional phase space of XH mass versus X mass is scanned for evidence of a signal, over a range of XH resonance mass values between 1 TeV and 4 TeV, and for X particles with masses from 50 GeV to 1000 GeV. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XH and X masses, on the production cross-section of the XH→qq¯′bb¯ resonance. © 2018 The Author(s
Uniquely factorizable entire functions
No full textAbstractLet f(z) be a transcendental entire function and n ⩾ 3 a prime number. Then (f(w) − aw) ∘ zn and ((w − a) f(w)) ∘ zn are uniquely factorizable (UF) for each complex number a, except for a countable set. Furthermore, if f(z) is prime and f(z) has infinitely many zeros such that almost all zeros are in ¦arg z − π¦ < ω (0 < ω < 12π), then fn is UF
Effect of xanthohumol on melanogenesis in B16 melanoma cells
No full textXanthohumol (XH), the principal prenylflavonoid of the hop plant (Humulus lupulus L.), dose-dependently inhibited isobutylmethylxanthine (IBMX)-induced melanogenesis in B16 melanoma cells, with little cytotoxicity at the effective concentrations. Decreased melanin content was accompanied by reduced tyrosinase enzyme activity, protein and mRNA expression. The levels of tyrosinase-related protein 1 and 2 mRNAs were decreased by XH. XH also inhibited a-melanocyte stimulating hormone- or forskolin-induced increases in melanogenesis, suggesting an action on the cAMP-dependent melanogenic pathway. XH downregulated the protein and mRNA expression of microphthalmia-associated transcription factor (MITF), a master transcriptional regulator of key melanogenic enzymes. These results suggest that XH might act as a hypo-pigmenting agent through the downregulation of MITF in the cAMP-dependent melanogenic pathway.
Interactions of CO, HCl, and Sox in Pulverised Coal Flames
No full textThe effect of HCl and SO_2 on CO oxidation in pulverised coal flames was investigated experimentally and kinetically in an entrained flow combustion reactor. Two bituminous coals (German 'Goettelborn' and a Polish coal) were used as fuels with a feeding rate of 1 or 1.5 kg/h. HCl or SO_2 is introduced into the reactor premixed with the primary air. Experimental results indicate that HCl addition may inhibit CO oxidation in coal flames and increases CO emission. Reducing temperature in the reactor will enhance the inhibitory effect of HCl on CO oxidation. The measured CO profiles along the reactor height clearly show that the addition of HCl may inhibit CO oxidation. In the experimental range of SO_2 addition. The inhibiting effect of SO_2 on CO oxidation is less significant than HCl. A detailed kinetic mechanism is used to model the reactions. And the controlling reactions are analysed
ROTATIONAL AND SPIN-ORBIT PREDISSOCIATION OF THE VAN DER WAALS COMPLEXES
No full textV. A. Mandelshtam, H. S. Taylor, V. Ryaboy and N. Moiseyev, Phys, Rev. A 50 2764 (1994) S. M. Cyblulski, R. R. Toczylowski, H.-S. Lee and A. B. McCoy, J. Chem. Phys., 113, 5736 (2000) H.-S. Lee, A. B. McCoy, R. R. Toczylowski and S. M. Cyblulski, J. Chem. Phys., 113, 9549 (2000)Author Institution: Department of Chemistry, The Ohio State University; James Franck Institute, University of ChicagoThe rotational and spin-orbit predissociation dynamics of complexes is investigated theoretically using the stabilization method of Mandelshtam using ab initio potential surfaces to describe the The calculations show large variations in the lifetimes of the complexes within narrow ranges of energy. In particular, we found a strong dependence of the lifetime on the parity of the state and the projection of the angular momentum onto the internuclear axis. Comparisons with available experimental data are made and the results of this purely ab inito treatment are found to be in good agreement with the experimental resonance energies and lifetimes
CALCULATION OF THE TORSIONAL-ROTATIONAL ENERGY LEVELS OF AND
No full textAuthor Institution: Department of Physics, Texas Tech UniversityThe torsional-rotational energy levels of and have been calculated, where X is either O or S atoms, using an internal axis approach (IAM) for the asymmetric-asymmetric molecules. The internal axis transformation removes the large Coriolis interaction from and places it in the effective . However, this transformation introduces additional terms into that depend explicitly upon . Solution for the energy levels is considered at three stages. First, the solution of the transformed or effective in a free rotor basis. Second, inclusion of the rotational terms from (-independent). And third, inclusion of the terms from including the -dependent terms quadratic in the and the small -dependent terms from the residual Coriolis interaction. Results from the theoretical formulation and from numerical calculations for the above molecules will be presented
Structural characterization of cubic GaN grown on GaAs(001) substrates
No full textStructural characteristics of cubic GaN epilayers grown on GaAs(001) were studied using X-ray double-crystal diffraction technique. The structure factors of cubic GaN(002) and (004) components are approximately identical. However, the integrated intensities of the rocking curve for cubic (002) components are over five times as those of (004) components. The discrepancy has been interpreted in detail considering other factors. In the conventional double crystal rocking curve, the peak broadening includes such information caused by the orientation distribution (mosaicity) and the distribution of lattice spacing. These two kinds of distributions can be distinguished by the triple-axis diffraction in which an analyser crystal is placed in front of the detector. Moreover, the peak broadening was analysed by reciprocal lattice construction and Eward sphere. By using triple-axis diffraction of cubic (002) and (113) components, domain size and dislocation density were estimated. The fully relaxed lattice parameter of cubic GaN was determined to be about 0.451 +/- 0.001nm
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