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    • Several versions

    Does the ‘Higgs’ have Spin Zero?

    Ellis, John, Hwang, Dae
    Journal of High Energy Physics, 2012, Vol.2012(9), pp.1-22 [Peer Reviewed Journal]

    • Several versions

    A fast track towards the ‘Higgs’ spin and parity

    Ellis, John, Hwang, Dae, Sanz, Verónica, You, Tevong
    Journal of High Energy Physics, 2012, Vol.2012(11), pp.1-17 [Peer Reviewed Journal]

    • Several versions

    Appraisal of Laparoscopic Distal Pancreatectomy for Left-Sided Pancreatic Cancer: A Large Volume Cohort Study of 152 Consecutive Patients

    Shin, Sang Hyun, Kim, Song Cheol, Song, Ki Byung, Hwang, Dae Wook, Lee, Jae Hoon, Park, Kwang-Min, Lee, Young-Joo
    PLoS ONE, 2016, Vol.11(9) [Peer Reviewed Journal]

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    Quark Helicity and Transversity Distributions

    Hwang, Dae Sung
    Cornell University
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    Title: Quark Helicity and Transversity Distributions
    Author: Hwang, Dae Sung
    Subject: High Energy Physics - Phenomenology
    Description: The quark transversity distribution inside nucleon is less understood than the quark unpolarized and helicity distributions inside nucleon. In particular, it is important to know clearly why the quark helicity and transversity distributions are different. We investigate the origin of their discrepancy. Comment: 22 pages
    Identifier: 1610.06250 (ARXIV ID)

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    Nucleon Transversity and Hyperon Polarization

    Hwang, Dae Sung
    Cornell University
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    Title: Nucleon Transversity and Hyperon Polarization
    Author: Hwang, Dae Sung
    Subject: High Energy Physics - Phenomenology
    Description: We calculate the transverse polarizations of the produced hyperons in the semi-inclusive deep inelastic scattering of unpolarized lepton beam on transversely polarized nucleon, since these polarizations provide a potential method for extracting the transversity distribution h1(x) of the nucleon. In this calculation we use the SU(6) wavefunctions of the octet baryons and the spectator model for the distribution functions of nucleons and the fragmentation functions of hyperons. We find that that H1(z) of the Sigma hyperons are much larger than that of the Lambda hyperon. Therefore, when one tries to extract the transversity distribution h1(x) from the hyperon polarizations, measuring the polarizations of the Sigma hyperons is more efficient than Lambda. Comment: 16 pages, 21 figures
    Identifier: 1608.02734 (ARXIV ID)

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    Title: Transverse Spin Polarization of $\tau^-$ in ${\bar{B}}^0\rightarrow D^{+} \tau^- {\bar{\nu}}$ and Charged Higgs Boson
    Author: Hwang, Dae Sung
    Subject: High Energy Physics - Phenomenology
    Description: The spin of the $\tau$ lepton in the semiletonic process ${\bar{B}}^0\rightarrow D^{+} \tau^- {\bar{\nu}}$ can be polarized in the direction which is normal to the reaction plane, if the charged Higgs boson exists and its coupling to quarks has a complex phase. We calculate this transverse polarization of the $\tau$ lepton by using the experimentally measured $B$ to $D$ transition form factors. Comment: 10 pages, 7 figures, 4 references are added
    Identifier: 1504.06933 (ARXIV ID)

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    Rapid solubilization of insoluble phosphate by a novel environmental stress-tolerant Burkholderia vietnamiensis M6 isolated from ginseng rhizospheric soil

    Park, Ki-Hyun, Lee, O-Mi, Jung, Ho-Il, Jeong, Jin-Ha, Jeon, Young-Dong, Hwang, Dae-Youn, Lee, Chung-Yeol, Son, Hong-Joo
    Applied Microbiology and Biotechnology, 2010, Vol.86(3), pp.947-955 [Peer Reviewed Journal]
    Springer Science & Business Media B.V.
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    Title: Rapid solubilization of insoluble phosphate by a novel environmental stress-tolerant Burkholderia vietnamiensis M6 isolated from ginseng rhizospheric soil
    Author: Park, Ki-Hyun; Lee, O-Mi; Jung, Ho-Il; Jeong, Jin-Ha; Jeon, Young-Dong; Hwang, Dae-Youn; Lee, Chung-Yeol; Son, Hong-Joo
    Subject: Biofertilizer ; Burkholderia vietnamiensis ; Insoluble phosphate ; Solubilization ; Stress
    Description: We isolated and characterized novel insoluble phosphate (P)-solubilizing bacteria tolerant to environmental factors like high salt, low and high pHs, and low temperature. A bacterium M6 was isolated from a ginseng rhizospheric soil and confirmed to belong to Burkholderia vietnamiensis by BIOLOG system and 16S rRNA gene analysis. The optimal cultural conditions for the solubilization of P were 2.5% ( w / v ) glucose, 0.015% ( w / v ) urea, and 0.4% ( w / v ) MgCl 2 ·6H 2 O along with initial pH 7.0 at 35°C. High-performance liquid chromatography analysis showed that B. vietnamiensis M6 produced gluconic and 2-ketogluconic acids. During the culture, the pH was reduced with increase in gluconic acid concentration and was inversely correlated with P solubilization. Insoluble P solubilization in the optimal medium was about 902 mg l −1 , which was approximately 1.6-fold higher than the yield in NBRIP medium (580 mg l −1 ). B. vietnamiensis M6 showed resistance against different environmental stresses like 10–45°C, 1–5% ( w / v ) salt, and 2–11 pH range. The maximal concentration of soluble P produced by B. vietnamiensis M6 from Ca 3 (PO 4 ) 2 , CaHPO 4 , and hydroxyapatite was 1,039, 2,132, and 1,754 mg l −1 , respectively. However, the strain M6 produced soluble P with 20 mg l −1 from FePO 4 after 2 days and 100 mg l −1 from AlPO 4 after 6 days, respectively. Our results indicate that B. vietnamiensis M6 could be a potential candidate for the development of biofertilizer applicable to environmentally stressed soil.
    Is part of: Applied Microbiology and Biotechnology, 2010, Vol.86(3), pp.947-955
    Identifier: 0175-7598 (ISSN); 1432-0614 (E-ISSN); 10.1007/s00253-009-2388-7 (DOI)

    • Several versions

    Spin correlations of $\varLambda{\bar{\varLambda}}$ pairs as a probe of quark–antiquark pair production

    Ellis, John, Hwang, Dae
    The European Physical Journal C, 2012, Vol.72(2), pp.1-6 [Peer Reviewed Journal]

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    Integrated and unintegrated PDFs and GPDs from effective two-body light-cone wave functions

    Hwang, Dae Sung, Mueller, Dieter
    Cornell University
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    Title: Integrated and unintegrated PDFs and GPDs from effective two-body light-cone wave functions
    Author: Hwang, Dae Sung; Mueller, Dieter
    Subject: High Energy Physics - Phenomenology
    Description: We suggest a classification scheme for parton distribution models, clarify the geometrical origin of unintegrated parton distribution relations, which were observed in various models, present new model relations, and provide for a so-called "spherical" model the analogous constraints for generalized parton distributions. Our findings suggest that various classes of uPDF and GPD models can be obtained from effective two-body light-cone wave functions. Comment: 6 pages, talk presented at the 6th International Conference on Quarks and Nuclear Physics, QNP 2012, April 16-20, 2012, Palaiseau, France
    Identifier: 1206.7039 (ARXIV ID)

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    GPD and PDF modeling in terms of effective light-cone wave functions

    Hwang, Dae Sung, Mueller, Dieter
    Cornell University
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    Title: GPD and PDF modeling in terms of effective light-cone wave functions
    Author: Hwang, Dae Sung; Mueller, Dieter
    Subject: High Energy Physics - Phenomenology
    Description: We employ models from effective two-body light-cone wave functions (LCWFs) to provide a link between generalized parton distributions (GPDs) and unintegrated parton distribution functions (uPDFs). Since we utilize the underlying Lorentz symmetry, GPDs can be entirely obtained from the parton number conserved LCWF overlaps. This also allows us to derive model constraints among GPDs. We illustrate that transversity distributions may be rather sizeable. Comment: 5 pages, 1 figure, talk given at the XIX International Workshop on Deep-Inelastic Scattering and Related Subjects, April 11-15, 2011, Newport News, USA
    Identifier: 1108.3869 (ARXIV ID)