Letters in High Energy Physics最新文献

{"title":"Joule-Thomson Expansion of Reissner-Nordstrom AdS Black Holes in $f(R)$ gravity","authors":"M. Chabab, High Energy, H. E. Moumni, S. Iraoui, K. Masmar, S. Zhizeh","doi":"10.31526/LHEP.2.2018.02","DOIUrl":"https://doi.org/10.31526/LHEP.2.2018.02","url":null,"abstract":"In this paper, we study Joule-Thomson expansion for charged AdS black holes in (f(R)) gravity. We obtain the inversiontemperatures as well as inversion curves, and investigate similarities and differences between van der Waals fluidsand charged AdS black holes in (f(R)) gravity for this expansion.In addition, we determine the position of the inversion point versus different values ofthe mass (M), the charge (Q) and the parameter (b) for such black hole. At this point, the Joule-Thomson coefficient (mu) vanishes, an import feature that we used to obtain the cooling-heating regions by scrutinizing the sign of the (mu) quantity.","PeriodicalId":36085,"journal":{"name":"Letters in High Energy Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47854395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dark $SU(2)$ Antecedents of the $U(1)$ Higgs Model","authors":"E. Ma","doi":"10.31526/LHEP.2.2018.03","DOIUrl":"https://doi.org/10.31526/LHEP.2.2018.03","url":null,"abstract":"The original spontaneously broken U(1) gauge model with one complex Higgs scalar field has been known in recent years as a possible prototype dark-matter model. Its antecedents in the context of SU(2) are discussed. Three specific examples are described, with one dubbed \"quantum scotodynamics\".","PeriodicalId":36085,"journal":{"name":"Letters in High Energy Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46977251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Search for more sensitive observables to charged scalar in $B rightarrow D^{(*)}taunu_{tau}$ decays.","authors":"L. Dhargyal","doi":"10.31526/LHEP.2.2019.108","DOIUrl":"https://doi.org/10.31526/LHEP.2.2019.108","url":null,"abstract":"It has been known that $B rightarrow D^{(*)} tau nu_{tau}$ are good observables in the search for the charged Higgs. The recent obervation of deviation from standard-model by almost 4$sigma$ by Babar, Belle and LHCb in $R(D^{(*)})$ revived the interest in possible signal of presence of charged Higgs in these modes. But such a large deviation in the rates, where standard-model has tree level contribution, coming from a charged Higgs alone is highly unlikely. However these decay modes are good probes to search for small charged Higgs signal if we can construct sensitive observables in these modes. In this work we would like to propose four new observables which shows much more sensitivity to the presence of charged Higgs than the usual observables such as $A_{lambda}^{D^{(*)}}$ and $A_{theta}^{D^{(*)}}$. These four observable are (1) $frac{1}{A_{lambda}^{D}}$, (2) $Y_{1}(q^{2}) = frac{A^{D}_{theta}}{A^{D}_{lambda}}$, (3) $Y_{2}(q^{2}) = frac{dGamma(B rightarrow D^{*}taunu_{tau})}{dGamma_{D}(lambda_{tau}=+1/2) - dGamma_{D}(lambda_{tau}=-1/2)}$ and (4) $Y_{3}(q^{2}) = (frac{q^{2}}{m^{2}_{tau}})(A^{D}_{lambda} + 1)frac{1}{A^{D}_{lambda}}$.","PeriodicalId":36085,"journal":{"name":"Letters in High Energy Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41699929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genomic assisted selection for enhancing line breeding: merging genomic and phenotypic selection in winter wheat breeding programs with preliminary yield trials.","authors":"Sebastian Michel, Christian Ametz, Huseyin Gungor, Batuhan Akgöl, Doru Epure, Heinrich Grausgruber, Franziska Löschenberger, Hermann Buerstmayr","doi":"10.1007/s00122-016-2818-8","DOIUrl":"10.1007/s00122-016-2818-8","url":null,"abstract":"<p><strong>Key message: </strong>Early generation genomic selection is superior to conventional phenotypic selection in line breeding and can be strongly improved by including additional information from preliminary yield trials. The selection of lines that enter resource-demanding multi-environment trials is a crucial decision in every line breeding program as a large amount of resources are allocated for thoroughly testing these potential varietal candidates. We compared conventional phenotypic selection with various genomic selection approaches across multiple years as well as the merit of integrating phenotypic information from preliminary yield trials into the genomic selection framework. The prediction accuracy using only phenotypic data was rather low (r = 0.21) for grain yield but could be improved by modeling genetic relationships in unreplicated preliminary yield trials (r = 0.33). Genomic selection models were nevertheless found to be superior to conventional phenotypic selection for predicting grain yield performance of lines across years (r = 0.39). We subsequently simplified the problem of predicting untested lines in untested years to predicting tested lines in untested years by combining breeding values from preliminary yield trials and predictions from genomic selection models by a heritability index. This genomic assisted selection led to a 20% increase in prediction accuracy, which could be further enhanced by an appropriate marker selection for both grain yield (r = 0.48) and protein content (r = 0.63). The easy to implement and robust genomic assisted selection gave thus a higher prediction accuracy than either conventional phenotypic or genomic selection alone. The proposed method took the complex inheritance of both low and high heritable traits into account and appears capable to support breeders in their selection decisions to develop enhanced varieties more efficiently.</p>","PeriodicalId":36085,"journal":{"name":"Letters in High Energy Physics","volume":"1 1","pages":"363-376"},"PeriodicalIF":5.4,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5263211/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"52045286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Full angular spectrum analysis of tensor current contribution to $A_{cp}(tau rightarrow K_{s} pi nu_{tau})$.","authors":"L. Dhargyal","doi":"10.31526/LHEP.3.2018.03","DOIUrl":"https://doi.org/10.31526/LHEP.3.2018.03","url":null,"abstract":"Babar collaboration has reported an intriguing opposite sign in the integrated decay rate asymmetry $A_{cp}(tau rightarrow K_{s} pi nu_{tau})$ than that of SM prediction from the known $K^{0}$ - $bar{K^{0}}$ mixing. Babar's result deviate from the SM prediction by about 2.7$sigma$. If the result stands with higher precision in the future experiments, the observed sign anomaly in the $A_{cp}(tau rightarrow K_{s} pi nu_{tau})$ can most likely come only from a NP. In this work we present a full angular spectrum analysis on the contribution to $A_{cp}(tau rightarrow K_{s} pi nu_{tau})$ coming from the tensorial term. Assuming the real part of the NP tensorial coupling is negligible compare to its imaginary part and with $A_{cp}(tau rightarrow K_{s} pi nu_{tau})$ and $Br(tau rightarrow K_{s} pi nu_{tau})$ as data points to fit the imaginary part of the NP coupling, we have been able to fit the result within 1$sigma$ of the experimental values.","PeriodicalId":36085,"journal":{"name":"Letters in High Energy Physics","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69996545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}