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Searching systematics for nonfactorizable contributions to B^(-)and B^(0) hadronic decays

Chinese Physics C 2022年第7期46卷 47-55页

作者： Maninder Kaur supreet pal Singh R.C.Verma Department of Physics Punjabi UniversityPatiala-147002India

The two-body weak decays B→πD/B→ρD and B→πD are examined using isospin analysis to study nonfactorizable *** determining strong interaction phases and obtaining factorizable contributions from spectator-quark diagrams for Nc=3,we determine nonfactorizable isospin amplitudes from the experimental data for these *** results support the universality of the ratio of nonfactorizable isospin reduced amplitudes for these decays within experimental *** demonstrate that these systematics are not coincidental,we also plot our results *** ratio.

关键词： nonfactorization weak hadronic decays HEP-PHE

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Searching systematics for nonfactorizable contributions to B- and■ hadronic decays

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Chinese Physics C 2022年第7期 49-57页

作者： Maninder Kaur supreet pal Singh R.C.Verma Department of Physics Punjabi University

The two-body weak decays ■and■ are examined using isospin analysis to study nonfactorizable contributions. After determining strong interaction phases and obtaining factorizable contributions from spectator-quark diagrams for Nc=3, we determine nonfactorizable isospin amplitudes from the experimental data for these modes. Our results support the universality of the ratio of nonfactorizable isospin reduced amplitudes for these decays within experimental errors. To demonstrate that these systematics are not coincidental, we also plot our results w. r. t. this ratio.

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Synthesis and Optical Characterization of Silver Doped Sodium Borate Glasses

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New Journal of Glass and Ceramics 2012年第4期2卷 111-115页

作者： Vandana Sharma supreet pal Singh Gurmel Singh Mudahar Kulwant Singh Thind Department of Physics Guru Nanak Dev University Amritsar India Department of Physics Punjabi University Patiala India

Silver doped sodium borate glasses prepared by melt-quenching technique were checked by XRD technique for their amorphous nature. It is observed that the molar volume increases with increasing Ag2O content leading to open struc- ture. Fourier Transform Infrared spectroscopy (FTIR) reveals the formation of BO3 and BO4 groups upon addition of silver oxide as modifier. From the Ultraviolet-Visible (UV-VIS) absorption spectra it is seen that the optical band gap increases with the increase of Ag2O content. Urbach energy is observed between 0.55 - 0.77 eV. The results obtained from molar volume, Fourier Transform Infrared spectroscopy and band gap energy measurements are in agreement with each other and nearly give the similar information about the studied glasses.

关键词： Silver Doped Sodium Borate Glasses Optical Band Gap Molar Volume UV-VIS and FTIR Spectroscopy and Bandgap Energy

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Synthesis and Characterization of Cadmium Containing Sodium Borate Glasses

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New Journal of Glass and Ceramics 2012年第4期2卷 128-132页

Glass system (80% B2O3 – (20 – y)% Na2CO3 – y% CdO, where y = 3, 6, 9, 12 and 15 mol%) prepared by meltquenching technique and checked by XRD technique reveals the amorphous nature of these glasses. Increases in density from 2.18 to 2.82 (g/cm3) were observed with an increase in CdO content. Ultraviolet-Visible (UV-VIS) absorption spectra of polished parallel surfaces glass samples showed a decrease in the optical band gap from 3.72 to 3.59 eV with increasing CdO content. The results suggest that CdO content in glass samples plays a role as a network modifier. In addition, a correlation between the results from density, UV-VIS and FTIR measurements indicates that change in the atomic structure is due to the formation of BO4 units.

关键词： Sodium Borate Glasses Optical Band Gap Molar Volume UV-VIS and FTIR Spectroscopy and Bandgap Energy

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