arXiv: High Energy Physics - Experiment最新文献

{"title":"First limits from a 3D-vector directional dark matter search with the NEWAGE-0.3b’ detector","authors":"R. Yakabe, K. Nakamura, T. Ikeda, Hiroshi Ito, Y. Yamaguchi, R. Taishaku, Miki Nakazawa, H. Ishiura, Takuma Nakamura, T. Shimada, T. Tanimori, H. Kubo, A. Takada, H. Sekiya, A. Takeda, Kentaro Miuchi Department of Physics, Graduate School of Science, K. University, D. Physics, Astronomy, Kyoto University, K. Observatory, Inst. for Nucl. Research, T. U. O. Tokyo, K. I. F. T. Physics, M. Universe","doi":"10.1093/PTEP/PTAA147","DOIUrl":"https://doi.org/10.1093/PTEP/PTAA147","url":null,"abstract":"The first directional dark matter search with three-dimensional tracking with head-tail sensitivity (3d-vector tracking method) was performed with the NEWAGE-0.3b' detector. The search was carried out from July 2013 to August 2017 (Run14 to Run18) at the Kamioka underground laboratory. The total live time was 434.85 days corresponding to an exposure of 4.51 kg$cdot$days. A 90 % spin-dependent WIMP-proton cross section limit of 421 pb for 150 GeV/$c^2$ WIMPs was obtained. This is the first experimental dark matter limit obtained by a 3d-vector tracking method.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81126360","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":"Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at $sqrt{s} =$ 8 TeV.","authors":"Atlas Collaborations","doi":"10.1007/JHEP08(2020)051","DOIUrl":"https://doi.org/10.1007/JHEP08(2020)051","url":null,"abstract":"","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74460092","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":"Extended search for sub-eV axion-like resonances via four-wave mixing with a quasi-parallel laser collider in a high-quality vacuum system","authors":"A. Nobuhiro, Yusuke Hirahara, K. Homma, Yuri Kirita, T. Ozaki, Y. Nakamiya, M. Hashida, S. Inoue, S. Sakabe","doi":"10.1093/ptep/ptaa075","DOIUrl":"https://doi.org/10.1093/ptep/ptaa075","url":null,"abstract":"Resonance states of axion-like particles were searched for via four-wave mixing by focusing two-color pulsed lasers into a quasi-vacuum. A quasi-parallel collision system that allows probing of the sub-eV mass range was realized by focusing the combined laser fields with an off-axis parabolic mirror. A 0.10 mJ/34 fs Ti:Sapphire laser pulse and a 0.14 mJ/9 ns Nd:YAG laser pulse were spatiotemporally synchronized by sharing a common optical axis and focused into the vacuum system. No significant four-wave mixing signal was observed at the vacuum pressure of $3.7 times 10^{-5}$ Pa , thereby providing upper bounds on the coupling-mass relation by assuming exchanges of scalar and pseudoscalar fields at a 95 % confidence level in the mass range below 0.21 eV. For this search, the experimental setup was substantially upgraded so that optical components are compatible with the requirements of the high-quality vacuum system, hence enabling the pulse power to be increased. With the increased pulse power, a new kind of pressure-dependent background photons emerged in addition to the known atomic four-wave mixing process. This paper shows the pressure dependence of these background photons and how to handle them in the search.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85790842","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":"New limits on the resonant absorption of solar axions obtained with a $$^mathbf {169}$$Tm-containing cryogenic detector","authors":"A. Abdelhameed, S. Bakhlanov, P. Bauer, A. Bento, E. Bertoldo, L. Canonica, A. Derbin, I. Drachnev, N. F. Iachellini, D. Fuchs, D. Hauff, M. Laubenstein, D. Lis, I. Lomskaya, M. Mancuso, V. Muratova, S. Nagorny, S. Nisi, F. Petricca, F. Proebst, J. Rothe, V. V. Ryabchenkov, S. Sarkisov, D. Semenov, K. Subbotin, M. Trushin, E. Unzhakov, E. Zharikov","doi":"10.1140/epjc/s10052-020-7943-5","DOIUrl":"https://doi.org/10.1140/epjc/s10052-020-7943-5","url":null,"abstract":"","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88264412","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":"Further studies on the physics potential of an experiment using LHC neutrinos","authors":"N. Beni, M. Brucoli, V. Cafaro, T. Camporesi, F. Cerutti, G. Dallavalle, S. Danzeca, A. Roeck, A. D. Rújula, D. Fasanella, V. Giordano, C. Guandalini, A. Ioannisyan, D. Lazic, A. Margotti, S. Meo, F. Navarria, L. Patrizii, T. Rovelli, M. Sabaté-Gilarte, F. S. Galan, P. S. Diaz, G. Sirri, Z. Szillasi, C. Wulz","doi":"10.1088/1361-6471/aba7ad","DOIUrl":"https://doi.org/10.1088/1361-6471/aba7ad","url":null,"abstract":"We discuss an experiment to investigate neutrino physics at the LHC in Run 3, with emphasis on tau flavour. As described in our previous paper [arXiv:1903.06564v1], the detector can be installed in the decommissioned TI18 tunnel, about 480 m downstream the ATLAS cavern, after the first bending dipoles of the LHC arc. In that location, the prolongation of the beam Line-of-Sight from Interaction Point IP1 to TI18 traverses about 100 m of rock. The detector intercepts the intense neutrino flux, generated by the LHC beams colliding in IP1, at large pseudorapidity eta, where neutrino energies can exceed a TeV. This paper focuses on optimizing global features of the experiment, like detector mass and acceptance. Since the neutrino-nucleon interaction cross section grows almost linearly with energy, the detector can be light and still collect a considerable sample of neutrino events; in the present study it weighs less than 3 tons. The detector is positioned off the beam axis, slightly above the ideal prolongation of the LHC beam from the straight section, covering 7.4 < eta < 9.2. In this configuration, the flux at high energies (0.5-1.5 TeV and beyond) is found to be dominated by neutrinos originating directly from IP1, mostly from charm decays, of which about 50% are electron neutrinos and about 5% are tau neutrinos. The contribution of pion and kaon decays to the muon neutrino flux is studied by means of simulations that embed the LHC optics and found small at high energies. The above studies indicate that with 150 /fb of delivered LHC luminosity in Run 3 the experiment can record a few thousand very high energy neutrino charged current interactions and over 50 tau neutrino charged current events.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78763033","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":"Direct Photon and Light Neutral Meson Production in the Era of Precision Physics at the LHC","authors":"M. C. Danisch","doi":"10.1007/978-3-030-53448-6_54","DOIUrl":"https://doi.org/10.1007/978-3-030-53448-6_54","url":null,"abstract":"","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83943107","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":"Jet quenching and acoplanarity via hadron-jet measurements in pp and Pb–Pb collisions at 5.02 TeV with ALICE","authors":"Y. Mao","doi":"10.1016/j.nuclphysa.2020.121812","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2020.121812","url":null,"abstract":"","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79214228","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":"Constraining parton energy loss via angular and momentum based differential jet measurements at STAR","authors":"R. Kunnawalkam Elayavalli","doi":"10.1016/j.nuclphysa.2020.121879","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2020.121879","url":null,"abstract":"","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91475324","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":"Hadronic $B$ decay reconstruction in early Belle II data","authors":"E. Ganiev, N. Rout, B. Wach","doi":"10.22323/1.377.0062","DOIUrl":"https://doi.org/10.22323/1.377.0062","url":null,"abstract":"Belle II is an experiment designed to study billions of $tau$-lepton, $b$- and $c$-quark decays observed with low background in asymmetric-energy electron-positron collisions at the SuperKEKB $B$-factory. In March 2019, the newly completed Belle II started operating and collected its first physics data reaching 10 fb$^{-1}$ to date. We report the reconstruction of prominent signals from various hadronic $B$ decays including $B^{-}to D^{(*)0}pi^{-}$, $B^{0}to D^{-}K^{+}$, and $B^{0}to K^{+}pi^{-}$ in the first data set corresponding to 5.15 fb$^{-1}$. These results show a remarkable level of early understanding of detector performance.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74820970","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":"The Large Hadron-Electron Collider at the HL-LHC","authors":"P. Agostini, H. Aksakal, H. Alan, S. Alekhin, P. Allport, N. Andari, K. André, D. Angal-Kalinin, S. Antusch, L. Bella, L. Apolinário, R. Apsimon, A. Apyan, G. Arduini, V. Ari, A. Armbruster, N. Armesto, B. Auchmann, K. Aulenbacher, G. Azuelos, S. Backovic, I. Bailey, S. Bailey, F. Balli, S. Behera, O. Behnke, I. Ben-Zvi, M. Benedikt, J. Bernauer, S. Bertolucci, S. Biswal, J. Blumlein, A. Bogacz, M. Bonvini, M. Boonekamp, F. Bordry, G. Boroun, L. Bottura, S. Bousson, A. Bouzas, C. Bracco, J. Bracinik, D. Britzger, S. Brodsky, C. Bruni, O. Bruning, H. Burkhardt, O. Cakir, R. Calaga, A. Caldwell, A. Caliskan, S. Camarda, N. Catalan-Lasheras, K. Cassou, J. Čepila, V. Çeti̇nkaya, V. Chetvertkova, B. Cole, B. Coleppa, A. Cooper-Sarkar, É. Cormier, A. Cornell, R. Corsini, E. Cruz-Alaniz, J. Currie, D. Curtin, M. D’Onofrio, J. Dainton, E. Daly, A. Das, S. Das, L. Dassa, J. Blas, L. D. Rose, H. Denizli, K. Deshpande, D. Douglas, L. Duarte, K. Dupraz, S. Dutta, A. Efremov, R. Eichhorn, K. Eskola, E. Ferreiro, O. Fi","doi":"10.1088/1361-6471/abf3ba","DOIUrl":"https://doi.org/10.1088/1361-6471/abf3ba","url":null,"abstract":"The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High Luminosity--Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron-proton and proton-proton operation. This report represents an update of the Conceptual Design Report (CDR) of the LHeC, published in 2012. It comprises new results on parton structure of the proton and heavier nuclei, QCD dynamics, electroweak and top-quark physics. It is shown how the LHeC will open a new chapter of nuclear particle physics in extending the accessible kinematic range in lepton-nucleus scattering by several orders of magnitude. Due to enhanced luminosity, large energy and the cleanliness of the hadronic final states, the LHeC has a strong Higgs physics programme and its own discovery potential for new physics. Building on the 2012 CDR, the report represents a detailed updated design of the energy recovery electron linac (ERL) including new lattice, magnet, superconducting radio frequency technology and further components. Challenges of energy recovery are described and the lower energy, high current, 3-turn ERL facility, PERLE at Orsay, is presented which uses the LHeC characteristics serving as a development facility for the design and operation of the LHeC. An updated detector design is presented corresponding to the acceptance, resolution and calibration goals which arise from the Higgs and parton density function physics programmes. The paper also presents novel results on the Future Circular Collider in electron-hadron mode, FCC-eh, which utilises the same ERL technology to further extend the reach of DIS to even higher centre-of-mass energies.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82885130","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}