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2021 ◽  
Vol 81 (9) ◽  
Author(s):  
Hong-ge Xu ◽  
Zhi-Lei She ◽  
Dai-Mei Zhou ◽  
Liang Zheng ◽  
Xiao-Lin Kang ◽  
...  

AbstractWe have used the dynamically constrained phase space coalescence model to study the production of the exotic state X(3872) based on the hadronic final states generated by the parton and hadron cascade model (PACIAE) with $$|y|<1$$ | y | < 1 and $$p_T < 15.5$$ p T < 15.5 GeV/c in pp collisions at $$\sqrt{s}=7$$ s = 7 and 13 TeV, respectively. Here the X(3872) is assumed to consist of bound state $$D\bar{D^*}$$ D D ∗ ¯ , which can form three possible structures for the tetraquark state, the nucleus-like state, and the molecular state. The yields of three different structures X(3872) were predicted. The transverse momentum distribution and the rapidity distribution of three different structures X(3872) are also presented. Sizable difference can be found in the transverse momentum and rapidity distributions for the three different X(3872) structures.



2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Kiwoon Choi ◽  
Sang Hui Im ◽  
Hee Jung Kim ◽  
Hyeonseok Seong

Abstract We study the renormalization group running of axion couplings while taking into account that the Standard Model can be extended to its supersymmetric extension at a certain energy scale below the axion decay constant. We then apply our results to three different classes of axion models, i.e. KSVZ-like, DFSZ-like, and string-theoretic axions, and examine if string-theoretic axions can be distinguished from others by having a different pattern of low energy couplings to the photon, nucleons and electron. We find that the low energy couplings of string-theoretic axions have a similar pattern as those of KSVZ-like axions but yet reveal a sizable difference which might be testable in future axion search experiments. We also note that the coupling of KSVZ-like QCD axions to the electron is dominated by a three-loop contribution involving the exotic heavy quark, gluons, top quark and Higgs field.



2012 ◽  
Vol 50 (2) ◽  
pp. 185-190
Author(s):  
N.M. Toyserkani ◽  
T. Frisch

Background: Not much is known about long-term satisfaction of septoplasty. The goal of this study was to assess disease specific quality of life outcomes as well as satisfaction at more than 10 years follow-up after septoplasty. Methodology/principal: The study was conducted as a retrospective questionnaire study (based on the NOSE scale) in which a questionnaire was sent to every patient and followed up by a telephone interview conducted in a tertiary otorhinolaryngologic clinic. Results: 238 out of 369 patients who underwent septoplasty accepted to participate of which 222 were eligible. We found a significant reduction in NOSE score from 56.9 before surgery to 31.9 at follow-up. 68.0% experienced improved nasal breathing and 55.9% were satisfied with the overall outcome. Predictive analysis showed that only severity of symptoms before surgery was predictive of all final outcome parameters. Conclusions: Long-term outcome of septoplasty appears to be in line with shorter follow-up. Surprisingly a sizable difference was noted between rate of satisfaction and improvement in nasal breathing. It is important that the surgeon and patient have the same expectations to septoplasty as to avoid any inappropriate disappointment, which is more likely to occur if symptoms are not severe.



2012 ◽  
Vol 465 ◽  
pp. 244-247
Author(s):  
Lei Deng ◽  
Dong Chen ◽  
Yin Lian Zhu ◽  
Xiu Liang Ma

First principle calculations have been performed to study the interface structure effect on physical properties of the Fe/BaTiO3/Fe junction. It is identified that Fe on top of the TiO2- terminated plane with two Fe atoms adsorbed on the two O top sites is the most stable interface. The interface structure is found to affect the ferroelectric behavior of BaTiO3 layer. With BaO-terminated interface, BaTiO3 shows larger Ti-O distance compared with TiO2-teminated interface. In addition, there is a sizable difference in magnetic moments on interfacial atoms at the two interfaces.



1998 ◽  
Vol 20 (2) ◽  
pp. 133-144 ◽  
Author(s):  
Andrea Maneschi

The London Economist of June 14, 1997, carried an article by Jeffrey Sachs (1997) entitled “The Limits of Convergence: Nature, Nurture and Growth,” which explores the relationship between geography, economic policies and institutions, and economic growth on the basis of recent econometric work. Four principal groups of factors were found to account for the sizable difference in per capita income growth between the South-East Asian countries and other less successful developing countries: initial economic conditions (such as the income gap separating poor countries from rich ones), policy variables, demographic factors, and resources and geography. One of the most significant conclusions (Sachs, 1997, p. 20) is that “openness was decisive for rapid growth. Open economies grew 1.2 percentage points per year faster than closed economies, controlling for everything else.”



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