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Conference photo 会议照片
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/S0920-5632(14)00280-1
{"title":"Conference photo","authors":"","doi":"10.1016/S0920-5632(14)00280-1","DOIUrl":"https://doi.org/10.1016/S0920-5632(14)00280-1","url":null,"abstract":"","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0920-5632(14)00280-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138354023","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}
引用次数: 0
Lattice Input on the τ Vus Puzzle 点阵输入tau V-us谜题
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/j.nuclphysbps.2014.09.013
K. Maltman , P.A. Boyle , L. DelDebbio , R.J. Hudspith , N. Garron , E. Kerrane , J.M. Zanotti
{"title":"Lattice Input on the τ Vus Puzzle","authors":"K. Maltman ,&nbsp;P.A. Boyle ,&nbsp;L. DelDebbio ,&nbsp;R.J. Hudspith ,&nbsp;N. Garron ,&nbsp;E. Kerrane ,&nbsp;J.M. Zanotti","doi":"10.1016/j.nuclphysbps.2014.09.013","DOIUrl":"10.1016/j.nuclphysbps.2014.09.013","url":null,"abstract":"<div><p>|<span><math><msub><mrow><mi>V</mi></mrow><mrow><mi>u</mi><mi>s</mi></mrow></msub></math></span>| values obtained from recent hadronic-<em>τ</em>-decay-based flavor-breaking sum rule analyses are significantly lower than expectations based on 3-family unitarity and results obtained from other sources. We use lattice data to investigate the accuracy/reliability of the OPE representation of the flavor-breaking correlator combination entering these analyses. The behavior of an alternate combination, chosen to reduce problems associated with the slow convergence of the <span><math><mi>D</mi><mo>=</mo><mn>2</mn></math></span> OPE series, and entering an alternate mixed <em>τ</em>-electroproduction sum rule, is also investigated. Preliminary updates of both analyses, predicated on lessons learned from the lattice data, are also presented.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"111752032","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}
引用次数: 0
The form factors for hadronic tau decay using background field method 用背景场法研究强子tau衰变的形式因子
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/j.nuclphysbps.2014.09.059
Daiji Kimura , Kang Young Lee , Takuya Morozumi
{"title":"The form factors for hadronic tau decay using background field method","authors":"Daiji Kimura ,&nbsp;Kang Young Lee ,&nbsp;Takuya Morozumi","doi":"10.1016/j.nuclphysbps.2014.09.059","DOIUrl":"10.1016/j.nuclphysbps.2014.09.059","url":null,"abstract":"<div><p>In the two body hadronic tau decays, such as <span><math><mi>τ</mi><mo>→</mo><mi>K</mi><mi>π</mi><mo>(</mo><mi>η</mi><mo>)</mo><mi>ν</mi></math></span>, vector mesons play important role. Belle and Babar measured hadronic invariant mass spectrum of <span><math><mi>τ</mi><mo>→</mo><mi>K</mi><mi>π</mi><mi>ν</mi></math></span> decay. To compare the spectrum with theoretical prediction, we develop the chiral Lagrangian with vector mesons in [D. Kimura, K. Y. Lee and T. Morozumi, <span>arXiv:1201.1794 [hep-ph]</span><svg><path></path></svg>]. We compute the form factors of the hadronic <em>τ</em> decay taking account of the quantum corrections of Nambu Goldstone bosons. We also show how to renormalize the divergence of the Feynman diagrams with arbitrary number of loops and determine the counterterms within one loop using background field method. In this report, we discuss the renormalization of [D. Kimura, K. Y. Lee and T. Morozumi, <span>arXiv:1201.1794 [hep-ph]</span><svg><path></path></svg>] by considering the one loop Feynman diagrams.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"100232814","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}
引用次数: 0
Feasibility study for a search for τ→μ+γ decay at Super c−τ factory 在超级c−τ工厂寻找τ→μ+γ衰变的可行性研究
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/j.nuclphysbps.2014.09.048
A.V. Bobrov , A.E. Bondar
{"title":"Feasibility study for a search for τ→μ+γ decay at Super c−τ factory","authors":"A.V. Bobrov ,&nbsp;A.E. Bondar","doi":"10.1016/j.nuclphysbps.2014.09.048","DOIUrl":"10.1016/j.nuclphysbps.2014.09.048","url":null,"abstract":"<div><p>A Monte Carlo study of possible background processes in a search for <span><math><mi>τ</mi><mo>→</mo><mi>μ</mi><mi>γ</mi></math></span> decay has been performed for conditions of the Super <span><math><mi>c</mi><mo>−</mo><mi>τ</mi></math></span> factory (SCTF) at a center-of-mass energy 3.686 GeV, 3.77 GeV and 4.17 GeV. The background from <span><math><msup><mrow><mi>τ</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>τ</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> events has been analysed. Selection criteria for background suppression are suggested and necessary requirements on the detector characteristics have been found. A possible upper limit for <span><math><msub><mrow><mi>B</mi></mrow><mrow><mi>τ</mi><mo>→</mo><mi>μ</mi><mi>γ</mi></mrow></msub></math></span> at SCTF is about <span><math><mo>(</mo><mn>1.5</mn><mo>÷</mo><mn>2.5</mn><mo>)</mo><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>10</mn></mrow></msup></math></span>. The SCTF can successfully compete with the Super B-factory in a search for <span><math><mi>τ</mi><mo>→</mo><mi>μ</mi><mi>γ</mi></math></span> decay.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"103596323","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}
引用次数: 3
Theory of Higgs to tau tau signatures at the LHC 在大型强子对撞机上的希格斯粒子到tau粒子特征的理论
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/j.nuclphysbps.2014.09.041
Hiroshi Yokoya
{"title":"Theory of Higgs to tau tau signatures at the LHC","authors":"Hiroshi Yokoya","doi":"10.1016/j.nuclphysbps.2014.09.041","DOIUrl":"10.1016/j.nuclphysbps.2014.09.041","url":null,"abstract":"<div><p>In this report, selected topics of tau leptons are collected in view of the high-energy collider experiments and the Higgs-boson search. Those topics include decay modes, tau-jet tagging, collinear approximation and the tau polarization. Using these unique properties of tau leptons, it is possible to observe various properties of the Higgs boson or the associated scalars in the extended Higgs models at the LHC.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"96067088","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}
引用次数: 0
Study of high-multiplicity τ decays and a search for second-class currents at BaBar BaBar高倍数τ衰减的研究和二级电流的搜索
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/j.nuclphysbps.2014.09.015
Randall J. Sobie
{"title":"Study of high-multiplicity τ decays and a search for second-class currents at BaBar","authors":"Randall J. Sobie","doi":"10.1016/j.nuclphysbps.2014.09.015","DOIUrl":"10.1016/j.nuclphysbps.2014.09.015","url":null,"abstract":"<div><p>We present measurements of the branching fractions of high-multiplicity <em>τ</em> decay modes and a search for <em>τ</em> second class current decays using a sample of 430 million <em>τ</em> lepton pairs, corresponding to an integrated luminosity of 468 fb<sup>-1</sup>, collected with the <em>BaBar</em> detector at the PEP-II asymmetric-energy <span><math><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> storage rings at SLAC.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"96219158","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}
引用次数: 0
New results from the T2K experiment T2K实验的新结果
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/j.nuclphysbps.2014.09.035
A. Hillairet, T2K collaboration
{"title":"New results from the T2K experiment","authors":"A. Hillairet,&nbsp;T2K collaboration","doi":"10.1016/j.nuclphysbps.2014.09.035","DOIUrl":"10.1016/j.nuclphysbps.2014.09.035","url":null,"abstract":"<div><p>Since its discovery, neutrino oscillation has been the subject of intense research. The <span><math><msub><mrow><mi>θ</mi></mrow><mrow><mn>13</mn></mrow></msub></math></span> parameter of the neutrino mixing matrix is of particular importance. A non-zero <span><math><msub><mrow><mi>θ</mi></mrow><mrow><mn>13</mn></mrow></msub></math></span> opens the possibility to study CP violation in the neutrino sector which could help explain the matter anti-matter asymmetry in the Universe. The Tokai-To-Kamioka (T2K) experiment was designed to measure electron neutrino appearance and muon neutrino disappearance using a muon neutrino beam produced at the J-PARC facility in Tokai, Japan. The Super-Kamiokande detector, located 295 km from the neutrino source, acts as the far detector. An improved analysis and all the data taken through June 9, 2012 provide 11 electron neutrino candidates in the far detector corresponding to 3.1 standard deviations from the <span><math><msub><mrow><mi>θ</mi></mrow><mrow><mn>13</mn></mrow></msub><mo>=</mo><mn>0</mn></math></span> hypothesis. This excess is currently the strongest indication of electron neutrino appearance and it yields for normal hierarchy and <span><math><msub><mrow><mi>δ</mi></mrow><mrow><mi>C</mi><mi>P</mi></mrow></msub><mo>=</mo><mn>0</mn></math></span>, <span><math><mn>0.053</mn><mo>&lt;</mo><msup><mrow><mi>sin</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>⁡</mo><mn>2</mn><msub><mrow><mi>θ</mi></mrow><mrow><mn>13</mn></mrow></msub><mo>&lt;</mo><mn>0.141</mn></math></span> at 68% confidence level.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107981168","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}
引用次数: 1
Measurement of τ mass at BESIII BESIII上τ质量的测量
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/j.nuclphysbps.2014.09.020
X.H. Mo
{"title":"Measurement of τ mass at BESIII","authors":"X.H. Mo","doi":"10.1016/j.nuclphysbps.2014.09.020","DOIUrl":"10.1016/j.nuclphysbps.2014.09.020","url":null,"abstract":"<div><p><em>τ</em> mass is a very sensitive quantity in testing the lepton-universality. Moreover, as one of three elementary leptons in nature, the accuracy of <em>τ</em> mass is almost four orders of magnitude lower than those of electron and muon, whose accuracy is at the level of 10<sup>−8</sup>. Further improvement of the accuracy of <em>τ</em> mass is of great importance for particle physics. The new experiment at BESIII aims at the uncertainty less than 0.1 MeV, or 6 × 10<sup>−6</sup> for the relative error. To reach this goal, the optimization study is performed to acquire the best strategy for the data taking. The recent progress of <em>τ</em> mass scan at BESIII is introduced.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"111748944","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}
引用次数: 0
Committees 委员会
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/S0920-5632(14)00279-5
{"title":"Committees","authors":"","doi":"10.1016/S0920-5632(14)00279-5","DOIUrl":"https://doi.org/10.1016/S0920-5632(14)00279-5","url":null,"abstract":"","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0920-5632(14)00279-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138341263","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}
引用次数: 0
Towards a determination of the tau lepton dipole moments 对tau轻子偶极矩的测定
Nuclear physics. B, Proceedings, supplements Pub Date : 2014-08-01 DOI: 10.1016/j.nuclphysbps.2014.09.025
M. Fael , L. Mercolli , M. Passera
{"title":"Towards a determination of the tau lepton dipole moments","authors":"M. Fael ,&nbsp;L. Mercolli ,&nbsp;M. Passera","doi":"10.1016/j.nuclphysbps.2014.09.025","DOIUrl":"10.1016/j.nuclphysbps.2014.09.025","url":null,"abstract":"<div><p>The <em>τ</em> anomalous magnetic moment <span><math><msub><mrow><mi>a</mi></mrow><mrow><mi>τ</mi></mrow></msub></math></span> and electric dipole moment <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>τ</mi></mrow></msub></math></span> have not yet been observed. The present bounds on their values are of order <span><math><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>2</mn></mrow></msup></math></span> and <span><math><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>17</mn></mrow></msup><mi>e</mi><mtext> cm</mtext></math></span>, respectively. We propose to measure <span><math><msub><mrow><mi>a</mi></mrow><mrow><mi>τ</mi></mrow></msub></math></span> with a precision of <span><math><mi>O</mi><mo>(</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup><mo>)</mo></math></span> or better and improve the existing limits on <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>τ</mi></mrow></msub></math></span> using precise <span><math><msup><mrow><mi>τ</mi></mrow><mrow><mo>−</mo></mrow></msup><mo>→</mo><msup><mrow><mi>l</mi></mrow><mrow><mo>−</mo></mrow></msup><msub><mrow><mi>ν</mi></mrow><mrow><mi>τ</mi></mrow></msub><msub><mrow><mover><mrow><mi>ν</mi></mrow><mrow><mo>¯</mo></mrow></mover></mrow><mrow><mi>l</mi></mrow></msub><mi>γ</mi></math></span> (<span><math><mi>l</mi><mo>=</mo><mi>e</mi></math></span> or <em>μ</em>) data from high-luminosity <em>B</em> factories. A detailed feasibility study of this method is underway.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83817879","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}
引用次数: 22
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