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Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)最新文献

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Prompt tau neutrinos at the LHC 在大型强子对撞机里发现了tau中微子
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0096
Y. S. Jeong, Weidong Bai, M. Diwan, M. Garzelli, M. Reno
{"title":"Prompt tau neutrinos at the LHC","authors":"Y. S. Jeong, Weidong Bai, M. Diwan, M. Garzelli, M. Reno","doi":"10.22323/1.369.0096","DOIUrl":"https://doi.org/10.22323/1.369.0096","url":null,"abstract":"We investigate tau neutrinos from heavy flavor hadrons that can be explored at a high rapidity LHC experiment. A large number of tau neutrinos can be produced in $pp$ collision at the LHC in the very forward region, where its main source is $D_s^pm$ mesons since the weak boson contribution is negligible. Abundant production of tau neutrinos will allow the precise study of tau neutrino charged current interactions to test lepton universality. In addition, it will provide the opportunity to probe the mixing between sterile neutrinos and tau neutrinos. We evaluate the fluxes and the event rates of the prompt tau neutrinos as well as the theoretical uncertainty using fits to the experimental data for charm meson production. Also, we describe the sterile neutrino masses and mixing angles that can be constrained by tau neutrinos from the LHC.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121273333","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: 2
One pion production in neutrino nucleon and neutrino nucleus interaction 中微子核子与中微子核相互作用中的一种介子产生
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0050
E. Gajate, L. Alvarez-Ruso, J. Nieves, J. Sobczyk, M. V. Vacas
{"title":"One pion production in neutrino nucleon and neutrino nucleus interaction","authors":"E. Gajate, L. Alvarez-Ruso, J. Nieves, J. Sobczyk, M. V. Vacas","doi":"10.22323/1.369.0050","DOIUrl":"https://doi.org/10.22323/1.369.0050","url":null,"abstract":"We very briefly describe the main ingredients, including the latest modifications, of the ``HNV'' model for one pion production in neutrino nucleon reactions. We present results for total cross sections as well as pion angular distributions with respect to the pion polar angles measured in the pion-nucleon center of mass. The latter show that the approximation of taking an isotropic distribution, as done in some Monte Carlo generators, is not supported by microscopic calculations. With the corresponding medium effects taken into account, the model is applied to one pion production in nuclei for which we show some preliminary results.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124260590","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: 2
Status and Plan of DUNE at Fermilab 费米实验室DUNE的现状和计划
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0022
Jae Yu
{"title":"Status and Plan of DUNE at Fermilab","authors":"Jae Yu","doi":"10.22323/1.369.0022","DOIUrl":"https://doi.org/10.22323/1.369.0022","url":null,"abstract":"The discovery and the solid confirmation of neutrino flavor oscillation have been made throughout late 1990 to 2000s. Such oscillation is the clear proof of non-zero neutrino mass since this is caused by the fact that the neutrino mass eigenstates differ from that of the flavor. The neutrinos in the Standard Model, however, are massless leptons, and thus the neutrino flavor oscillation necessitates either the Standard Model to be significantly modified or a new theoretical paradigm to describe the universe better. In order to provide experimental information, it is essential for the properties of the neutrino oscillation be well understood through precision measurements of oscillation parameters, including the mixing angles, determination of the mass hierarchy between the three mass eigenstates and determination of the CP phase (Delta_CP) between neutrino and anti-neutrino oscillations. Among the several next generation neutrino experiments, this presentation covers the Deep Underground Neutrino Experiment (DUNE) which, with the high intensity neutrino beam facility, will help accomplish these goals. In this report, I will discuss the current status and plan of the DUNE experiment, including the results of the detector performance studies from the large scale prototype detectors operating at CERN and the timeline for construction and data taking of the experiment, as well as its physics prospects.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123780064","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
Prospect and status of the physics run of the NINJA experiment NINJA实验物理运行的展望与现状
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0144
T. Odagawa
{"title":"Prospect and status of the physics run of the NINJA experiment","authors":"T. Odagawa","doi":"10.22323/1.369.0144","DOIUrl":"https://doi.org/10.22323/1.369.0144","url":null,"abstract":"Neutrino-nucleus interaction is a major source of the systematic uncertainty for neutrino oscillation experiments. \u0000The NINJA experiment aims to measure the neutrino-water interactions precisely with a nuclear emulsion detector called an Emulsion Cloud Chamber (ECC). \u0000Nuclear emulsions have sub-micron position resolution and allow us to detect short tracks of low momentum secondary charged particles such as protons. \u0000 \u0000In the NINJA experiment, a muon detector is placed downstream of ECC because it cannot identify muons from $nu_{mu}$ charged current interactions by itself. \u0000In contrast with its good position resolution, the nuclear emulsion doesn't have timing information and enormous tracks are accumulated in the detector during the whole experiment. \u0000Therefore, the position resolution of the muon detector is not enough to connect the muon tracks to ECCs one by one. \u0000The NINJA experiment solves this problem by using a scintillator tracker between the muon detector and ECC, which has equivalent timing resolution and better position resolution. \u0000 \u0000The NINJA experiment is planning a physics run with a 75~kg water target from November 2019. \u0000Since the target mass is larger than previous runs, a larger tracker covering 1 m $times$ 1 m area is needed. \u0000 \u0000In this paper, we will show the status of preparation for the physics run, especially about development of the new scintillator tracker.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131610993","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
Neutrino Source for Sterile Neutrino Searches 无菌中微子搜索的中微子源
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0056
T. Konno
{"title":"Neutrino Source for Sterile Neutrino Searches","authors":"T. Konno","doi":"10.22323/1.369.0056","DOIUrl":"https://doi.org/10.22323/1.369.0056","url":null,"abstract":"The J-PARC MLF neutron target is suitable as an intense neutrino beam from $mu$ decay at rest ($mu$DAR) for the sterile neutrino. Pure $bar{nu}_{mu}$ beam can be available thanks to the low duty factor of beam spill and 1 MW proton beam power of the MLF. Estimation of the pion production rate is one of the significant challenges in the sterile neutrino search. And therefore, several MC simulations are carried out to understand the uncertainty. In addition to the sterile search, neutrino from kaon decay at rest ($K$DAR) is also an interesting channel to probe neutrino interaction with monogenic energy. The environmental background related to the proton beam was measured using a plastic scintillator detector. Finally, we confirmed that there is almost no environmental background expected for the sterile neutrino search at a distance of 20 m behind the mercury target.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131780794","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
Status of the AlCap experiment AlCap实验状态
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0087
M. Wong
{"title":"Status of the AlCap experiment","authors":"M. Wong","doi":"10.22323/1.369.0087","DOIUrl":"https://doi.org/10.22323/1.369.0087","url":null,"abstract":"COMET (J-PARC) and Mu2e (Fermilab) are two experiments currently under construction that aspire to discover the neutrino-less muon to electron conversion BSM process. As a cooperation between the two experiments, AlCap was created to measure low energy particle emission spectra after nuclear muon capture in target materials aluminium and titanium. These measurements are important for understanding noise hit rates and radiation damage in COMET and Mu2e's detector systems. AlCap also explored muonic x-ray measurement methods that could be used for muon normalization. This talk will report the preliminary results collected at the Paul Scherrer Institut(PSI) in Switzerland during the 2015 run.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133329569","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 Belle II Experiment: Status and Prospects 贝尔二号实验:现状与展望
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0088
Kunxiang Huang
{"title":"The Belle II Experiment: Status and Prospects","authors":"Kunxiang Huang","doi":"10.22323/1.369.0088","DOIUrl":"https://doi.org/10.22323/1.369.0088","url":null,"abstract":"The Belle II experiment at the SuperKEKB energy asymmetric e^{+}e^{-}e+e− collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The design luminosity of the machine is 6times10^{35}6×1035cm^{-2}s^{-1}cm−2s−1 and the Belle II experiment aims to record 50 ab^{-1}ab−1 of data, a factor of 50 more than its predecessor. With this data set, Belle II will be able to measure the Cabibbo-Kobayashi-Maskawa (CKM) matrix, the matrix elements and their phases, with unprecedented precision and explore flavor physics with BB, charmed mesons, and tauτ leptons. Belle II has also a unique capability to search for low-mass dark matter and low-mass mediators. In this paper, we will review the status of the Belle II detector, SuperKEKB accelerator and the prospects for physics at Belle II.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124235082","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
Status of MEG experiment at PSI PSI脑磁图实验现状
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0081
S. Mihara
{"title":"Status of MEG experiment at PSI","authors":"S. Mihara","doi":"10.22323/1.369.0081","DOIUrl":"https://doi.org/10.22323/1.369.0081","url":null,"abstract":"The $mu^+ rightarrow e^+ gamma$ decay is a key to understand physics beyond the standard model; if the decay is discovered, it is a clear evidence of new physics. If its branching ratio upper limit is improved by one order of magnitude, the result restricts the type of new physics in about twice larger energy scale. The MEG experiment, and its upgrade MEG II experiment, are experimental searches for the $mu^+ rightarrow e^+ gamma$ decay by using intense DC muon beam provided at Paul Scherrer Institute in Switzerland. In this presentation we describe the result of MEG and report the preparation status of MEG II.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116875823","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
The ESS$nu$SB Project ESS$nu$SB项目
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI: 10.22323/1.369.0024
M. Dracos, E. Baussan, E. Bouquerel, T. Ekelof, A. K. Topaksu
{"title":"The ESS$nu$SB Project","authors":"M. Dracos, E. Baussan, E. Bouquerel, T. Ekelof, A. K. Topaksu","doi":"10.22323/1.369.0024","DOIUrl":"https://doi.org/10.22323/1.369.0024","url":null,"abstract":"After measuring in 2012 a relatively large value of the neutrino mixing angle $theta_{13}$, the door is now open to observe for the first time a possible CP violation in the leptonic sector. \u0000The measured value of $theta_{13}$ also privileges the 2nd oscillation maximum for the discovery of CP violation instead of the usually used 1st oscillation maximum. \u0000The sensitivity at this 2nd oscillation maximum is significantly higher than for the 1st oscillation maximum also inducing a lower influence of systematic errors. \u0000Going to the 2nd oscillation maximum necessitates a very intense neutrino beam with the appropriate energy. \u0000The world's most intense pulsed neutron source, the European Spallation Source, will have a proton linac with 5 MW power and 2 GeV energy. \u0000This linac, under construction, also has the potential to become the proton driver of the world's most intense neutrino beam with very high potential to discover a neutrino CP violation. \u0000The physics performance of that neutrino Super Beam in conjunction with a megaton underground Water Cherenkov neutrino detector installed at a distance of about 500 km from ESS has been evaluated. \u0000In addition, the choice of such detector will extent the physics program to proton--decay, atmospheric neutrinos and astrophysics searches. \u0000The ESS proton linac upgrades, the accumulator ring needed for proton pulse compression, the Target Station and the physics potential are described. In addition to neutrinos, this facility will also produce at the same time a copious number of muons which could be used by other physics applications. \u0000The ESS linac will be fully ready by 2023 at which moment the upgrade process for the neutrino facility construction could start.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125255887","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: 2
J-PARC Neutrino Beamline and 1.3 MW Upgrade J-PARC中微子束线和1.3 MW升级
Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-04-15 DOI: 10.22323/1.369.0054
Y. Oyama
{"title":"J-PARC Neutrino Beamline and 1.3 MW Upgrade","authors":"Y. Oyama","doi":"10.22323/1.369.0054","DOIUrl":"https://doi.org/10.22323/1.369.0054","url":null,"abstract":"J-PARC neutrino beamline has been operated since 2009. Until May 2018, the maximum beam power achieved was ~500 kW. In future, the beam power will be upgraded to 1.3 MW. After the stable operation in late 2020s, we can accumulate ~30 x 10^20 POT data per year. It is almost the same number as total POT accumulated in recent 10 years. The upgrade plan of the Main Ring as well as the neutrino beamline is reported.","PeriodicalId":322602,"journal":{"name":"Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)","volume":"487 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132162000","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: 2
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