scholarly journals Revisiting the pseudoscalar meson and glueball mixing and key issues in the search for a pseudoscalar glueball state

2018 ◽  
Vol 97 (9) ◽  
Author(s):  
Wen Qin ◽  
Qiang Zhao ◽  
Xian-Hui Zhong
Keyword(s):  
Pseudoscalar Meson ◽  
Key Issues ◽  
Glueball State

Quarkonia-Glueball Structure of the Ground Pseudoscalar Mesons

2003 ◽  
Vol 18 (19) ◽  
pp. 3335-3346 ◽  
Author(s):  
De-Min Li ◽  
Bing Ma ◽  
Hong Yu
Keyword(s):  
Symmetry Breaking ◽  
Pseudoscalar Meson ◽  
Scalar Meson ◽  
Radiative Decays ◽  
Flavor Symmetry ◽  
Average Data ◽  
Two Photon ◽  
Pseudoscalar Mesons ◽  
Pseudo Scalar ◽  
Glueball State

Considering corrections due to SU(3) flavor symmetry breaking, non-ideal ω - ϕ mixing, double OZI and electromagnetic amplitudes of J/ψ decays into a vector and a pseudo-scalar meson, and three-gluon-annihilation amplitudes of radiative decays of J/ψ into a pseudoscalar meson, we investigate two-photon decays of pseudoscalar mesons, radiative decays between pseudoscalar and vector mesons, decays of J/ψ into a vector and a pseudoscalar meson, and radiative decays of J/ψ into a pseudoscalar meson. The quarkonia-glueball structure of η, η′ and η(1440) is phenomenologically deduced from the fit to the updated world average data concerning the above mentioned decays. We find that η (η′) contains about 48.7%, 47.6%, 3.7% (32.9%, 48.8%, 18.3%) non-strange quarkonium, strange quarkonium and glueball components, respectively, and that η(1410) is mainly a glueball state (about 78% glueball component), mixed with 18.5% non-strange quarkonium and 3.5% strange quarkonium. We predict that Br (J/ψ→γη) : Br (J/ψ→γη′) : Br (J/ψ→γη(1410)) = 1.0:5.2:8.0, which can be tested at BEPC/BES with 50 million J/ψ events.

Probing vacancies and structural distortions at individual defects in ceramics using EELS

1996 ◽  
Vol 54 ◽  
pp. 678-679
Author(s):  
D. J. Wallis ◽  
N. D. Browning
Keyword(s):  
Structural Information ◽  
Core Loss ◽  
Nearest Neighbors ◽  
Ceramic Materials ◽  
Scanning Transmission Electron Microscope ◽  
Real Space ◽  
Atomic Scale ◽  
Structure Property ◽  
Scanning Transmission ◽  
Key Issues

In electron energy loss spectroscopy (EELS), the near-edge region of a core-loss edge contains information on high-order atomic correlations. These correlations give details of the 3-D atomic structure which can be elucidated using multiple-scattering (MS) theory. MS calculations use real space clusters making them ideal for use in low-symmetry systems such as defects and interfaces. When coupled with the atomic spatial resolution capabilities of the scanning transmission electron microscope (STEM), there therefore exists the ability to obtain 3-D structural information from individual atomic scale structures. For ceramic materials where the structure-property relationships are dominated by defects and interfaces, this methodology can provide unique information on key issues such as like-ion repulsion and the presence of vacancies, impurities and structural distortion.An example of the use of MS-theory is shown in fig 1, where an experimental oxygen K-edge from SrTiO3 is compared to full MS-calculations for successive shells (a shell consists of neighboring atoms, so that 1 shell includes only nearest neighbors, 2 shells includes first and second-nearest neighbors, and so on).

Pilot Telepractice Program Identifies Key Issues

ASHA Leader ◽  
2012 ◽  
Vol 17 (12) ◽  
Keyword(s):  
Key Issues

Assessment in e-Learning Environment: Key Issues and Pitfalls

2014 ◽  
Author(s):  
Natividad B. Concepcion ◽  
Gieselle V. Kwo
Keyword(s):  
Learning Environment ◽  
E Learning ◽  
Key Issues

Key issues in policy research for psychosocial risk management and the way forward

2008 ◽  
Author(s):  
S. Leka ◽  
T. Cox ◽  
G. Zwetsloot ◽  
A. Jain ◽  
E. Kortum
Keyword(s):  
Risk Management ◽  
Policy Research ◽  
Psychosocial Risk ◽  
Key Issues ◽  
The Way

A Meeting of the Minds: Researchers and Practitioners Discuss Key Issues in Corrections-Based Drug Treatment

2003 ◽  
Author(s):  
Gretchen E. Moore ◽  
Daniel P. Mears
Keyword(s):  
Drug Treatment ◽  
Key Issues

Voices from the Field: Practitioners Identify Key Issues in Corrections-Based Drug Treatment

2003 ◽  
Author(s):  
Gretchen E. Moore ◽  
Daniel P. Mears
Keyword(s):  
Drug Treatment ◽  
Key Issues

Katherine Mansfield and Literary Influence

2015 ◽  
Keyword(s):  
Cultural Differences ◽  
Virginia Woolf ◽  
Katherine Mansfield ◽  
Anton Chekhov ◽  
Evelyn Waugh ◽  
Literary Influence ◽  
Artistic Production ◽  
Key Issues ◽  
John Middleton Murry

Katherine Mansfield and Literary Influence seeks to understand influence, a powerful yet mysterious and undertheorised impetus for artistic production, by exploring Katherine Mansfield’s wide net of literary associations. Mansfield’s case proves that influence is careless of chronologies, spatial limits, artistic movements and cultural differences. Expanding upon theories of influence that focus on anxiety and coteries, this book demonstrates that it is as often unconscious as it is conscious, and can register as satire, yearning, copying, homage and resentment. This book maps the ecologies of Mansfield’s influences beyond her modernist and postcolonial contexts, observing that it roams wildly over six centuries, across three continents and beyond cultural and linguistic boundaries. Katherine Mansfield and Literary Influence identifies Mansfield’s involvement in six modes of literary influence - Ambivalence, Exchange, Identification, Imitation, Enchantment and Legacy. In so doing, it revisits key issues in Mansfield studies, including her relationships with Virginia Woolf, John Middleton Murry and S. S. Koteliansky, as well as the famous plagiarism case regarding Anton Chekhov. It also charts new territories for exploration, expanding the terrain of Mansfield's influence to include writers as diverse as Colette, Evelyn Waugh, Nettie Palmer, Eve Langley and Frank Sargeson.

‘The Oral Versus The Written’

Moreana ◽  
2008 ◽  
Vol 45 (Number 175) (3) ◽  
pp. 14-50 ◽  
Author(s):  
Brian Cummings
Keyword(s):  
Religious Practice ◽  
Philosophical Argument ◽  
Key Issues ◽  
Confessional Identity ◽  
The Relationship

The relationship between scripture and tradition has always been recognised as central to the controversy between More and Tyndale in the late 1520s and early 1530s. It was already one of the key issues in the English campaign against Luther instigated in 1521, and in the 1540s became one of the lynchpins of confessional identity both among Catholic theologians at Trent and in the English reformed articles of 1553. This is often seen as a doctrinal issue, but beneath the surface it can also be seen as part of a profound philosophical argument about the authority of oral and written evidence, an argument which goes back to the origins of Jewish and Christian religious practice and which continues to haunt the ecumenical concerns of today.

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