1,078 research outputs found
Natural SUSY, mixed axion-higgsino dark matter and the gamma-ray sky Howard Baer (University of Oklahoma) What the Higgs discovery implies for WIMP detection
No full textBaer, Howard. (2013). Natural SUSY, mixed axion-higgsino dark matter and the gamma-ray sky Howard Baer (University of Oklahoma) What the Higgs discovery implies for WIMP detection. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/158166
Dark Matter in models with mirage unification
No full textBaer, Howard. (2012). Dark Matter in models with mirage unification. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/129673
The blind spots of secularization
No full textAccording to several international surveys Spain is among the western countries with the most negative views of Jews. While quantitative data on the topic accumulates, there is a significant lack of interpretative approaches that might explain the particular Spanish case. This paper presents the background, methodology and major results of a discussion group-based study on antisemitism, which was conducted in Spain in the autumn of 2009. The study identifies and locates in different socio-economic and ideological milieus the range of stereotypical discourses on Jews, Judaism and the Arab–Israeli conflict in Spain. Analysis of the group meetings shows that, despite growing secularization in Spanish society, the central explanatory variable for persisting and resurging antisemitism in this country is still religion in a broad cultural sense.N
Associated neutralino-neutralino-photon production at NLC
No full textWe study the potential of an e+e- linear collider to search for neutralino-neutralino-photon production. Our analysis shows that this signal is not viable under realistic expectations for electron beam polarization due to large Standard Model backgrounds. Such a search would be possible only if beam polarizations of near 100% could be achieved
Baer semisimple modules and Baer rings
No full textWe consider Baer rings and Baer semisimple R-modules which are generalizations of semisimple modules. Several characterization theorems of Baer semisimple modules are obtained. In particular, we prove that a ring R is a Baer ring if and only if R itself, regarded as a regular R-module, is Baer semisimple.The research of the first author is jointly supported by the Natural Science Foun-dation of Jiangxi Province; the Science Foundation of the Education Department ofJiangxi Province and the Foundation of Jiangxi Normal University, China. The re-search of the second author is partially supported by a UGC (HK)grant (#2160297/05-06)
Baer semisimple modules and Baer rings
No full textWe consider Baer rings and Baer semisimple R-modules which are generalizations of semisimple modules. Several characterization theorems of Baer semisimple modules are obtained. In particular, we prove that a ring R is a Baer ring if and only if R itself, regarded as a regular R-module, is Baer semisimple.The research of the first author is jointly supported by the Natural Science Foun-dation of Jiangxi Province; the Science Foundation of the Education Department ofJiangxi Province and the Foundation of Jiangxi Normal University, China. The re-search of the second author is partially supported by a UGC (HK)grant (#2160297/05-06)
Howard Metzenbaum, Robert Taft Jr. and Dr. Richard Baer Take the Spotlight at Environmental Teach-In
No full textNews release announcing UD Students have arranged an Environmental Teach-In, featuring candidates for the United States Senate, Democrat Howard Metzenbaum and Republican Robert Taft Jr., and Associate Professor of Religion at Earlham College, Dr. Richard Baer to have discussions
Neutralino relic density in minimal supergravity with co-annihilations
No full textWe evaluate the relic density of neutralinos in the minimal supergravity (mSUGRA) model. All 2?2 neutralino annihilation diagrams, as well as all processes involving sleptons, charginos, neutralinos and third generation squarks are included. Relativistic thermal averaging of the velocity times cross sections is performed. We find that co-annihilation effects are only important on the edges of the model parameter space, where some amount of fine-tuning is necessary to obtain a reasonable relic density. Alternatively, at high tan ?, annihilation through very broad Higgs resonances gives rise to an acceptable neutralino relic density over broad regions of parameter space where little or no fine-tuning is needed. Finally, we compare our results against the reach of various e+e? and hadron colliders for supersymmetric matter
Supersymmetric interpretation of the Egret GeV anomaly, Xenon-10 dark matter search limits, and the CERN LHC
No full textThe observation of the Egret experiment of an excess of diffuse gamma rays with energies above Egamma=1 GeV has previously been interpreted in the context of the minimal supergravity model (mSUGRA) as coming from neutralino annihilation into mainly b-quarks in the galactic halo, with neutralino mass in the vicinity of 50–70 GeV. We observe that, in order to obtain the correct relic abundance of neutralinos in accord with WMAP measurements, the corresponding neutralino-proton direct detection (DD) rates should be in excess of recent limits from the Xenon-10 collaboration. While it does not appear possible to satisfy the Egret, WMAP, and Xenon-10 constraints simultaneously within the mSUGRA model, we find that it is easily possible in models with nonuniversal Higgs soft masses (NUHM). In either case, gluino pair production from mg-tilde~400–500 GeV should occur at large rates at the CERN LHC, and a gluino pair production signal should be visible with just 0.1 fb-1 of integrated luminosity. The NUHM interpretation predicts a rather light spectrum of heavy Higgs bosons with mA~140–200 GeV over the whole parameter space which would interpret Egret data. Spin-independent DD rates are predicted to be just above 10-8 pb, within range of the next round of direct dark matter detection experiments
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