7 results on '"R. Tschirhart"'
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2. Measurement of the branching ratio of π0 Dalitz decay using KL→π0π0π0 decays
- Author
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Carlos Escobar, E. Blucher, E. T. Worcester, R. E. Ray, E. Abouzaid, J. Wang, A. R. Barker, B. Winstein, R. A. Gomes, H. Nguyen, Patricia McBride, R. Coleman, P. Gouffon, T. Yamanaka, Elliott Cheu, M. D. Corcoran, D. Smith, H. B. White, Alexandre Glazov, D. G. Phillips, E. Monnier, L. Bellantoni, R. F. Zukanovich, M. Ronquest, K. Kotera, Roland Winston, R. Niclasen, E. J. Ramberg, N. Solomey, Y. W. Wah, E. C. Swallow, E. D. Zimmerman, P. A. Toale, R. Tschirhart, Bradley Cox, G. J. Bock, E. M. Santos, Richard Kessler, Alexander Ledovskoy, M. J. Wilking, D. A. Jensen, Michael Wayne Arenton, W. E. Slater, Y. B. Hsiung, A. R. Erwin, A. Golossanov, and J. Whitmore
- Subjects
Physics ,Particle physics ,Pion ,010308 nuclear & particles physics ,Branching fraction ,0103 physical sciences ,Mass spectrum ,010306 general physics ,01 natural sciences ,Fermi Gamma-ray Space Telescope - Abstract
We present a measurement of B(π0→e+e-γ)/B(π0→γγ), the Dalitz branching ratio, using data taken in 1999 by the E832 KTeV experiment at Fermi National Accelerator Laboratory. We use neutral pions from fully reconstructed KL decays in flight; the measurement is based on ∼60 thousand KL→π0π0π0→γγγγe+e-γ decays. We normalize to KL→π0π0π0→6γ decays. We find B(π0→e+e-γ)/B(π0→γγ) (me+e->15 MeV/c2)=[3.920±0.016(stat)±0.036(syst)]×10-3. Using the Mikaelian and Smith prediction for the e+e- mass spectrum, we correct the result to the full e+e- mass range. The corrected result is B(π0→e+e-γ)/B(π0→γγ)=[1.1559±0.0047(stat)±0.0106(syst)]%. This result is consistent with previous measurements, and the uncertainty is a factor of 3 smaller than any previous measurement.
- Published
- 2019
3. Neutron-antineutron oscillations: Theoretical status and experimental prospects
- Author
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Yuri Kamyshkov, Ayman I. Hawari, Amit Roy, Lawrence W. Townsend, T. Gabriel, Chris Quigg, Robert W. Pattie, Hans P. Mumm, A. Serebrov, P. L. McGaughey, L. Okun, Masaaki Kitaguchi, G. Brooijmans, Lawrence Heilbronn, S. Striganov, B. Z. Kopeliovich, R. Van Kooten, Zurab Berezhiani, Mingshui Chen, Franz X. Gallmeier, K. S. Ganezer, Calvin A. Johnson, Luis A. Castellanos, M. Bergevin, N.V. Mokhov, Ramanath Cowsik, B. Hartfiel, Saptaparna Bhattacharya, E. B. Dees, Arkady Vainshtein, Rabindra N. Mohapatra, Albert Young, Avraham Gal, R. Tschirhart, Michael Mocko, Utpal Sarkar, M. Frost, Geoffrey Greene, V. B. Kopeliovich, Alexander Saunders, E. J. Ramberg, Zhehui Wang, G. Muhrer, S. K. L. Sjue, Arthur E. Ruggles, Prasanta Kumar Das, D. G. Phillips, A. Ray, A. K. Sikdar, K. S. Babu, H. M. Shimizu, V. A. Kuzmin, William Snow, J. A. Crabtree, B. Kerbikov, E. Golubeva, A. D. Dolgov, Chen-Yu Liu, David V. Baxter, C. E. Coppola, Robert Shrock, Phillip D. Ferguson, and Sw. Banerjee
- Subjects
Cold neutron source ,Quasi-free condition ,Physics - Instrumentation and Detectors ,Nuclear Theory ,Proton decay ,media_common.quotation_subject ,General Physics and Astronomy ,FOS: Physical sciences ,Physics and Astronomy(all) ,Antineutron ,01 natural sciences ,High Energy Physics - Experiment ,Nuclear physics ,Nuclear Theory (nucl-th) ,High Energy Physics - Experiment (hep-ex) ,Baryon asymmetry ,High Energy Physics - Phenomenology (hep-ph) ,0103 physical sciences ,Baryon number violation ,Spallation ,Neutron ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment ,010306 general physics ,media_common ,Physics ,Annihilation ,010308 nuclear & particles physics ,Instrumentation and Detectors (physics.ins-det) ,Neutron radiation ,Universe ,High Energy Physics - Phenomenology ,Neutrino - Abstract
This paper summarizes the relevant theoretical developments, outlines some ideas to improve experimental searches for free neutron-antineutron oscillations, and suggests avenues for future improvement in the experimental sensitivity., Comment: Submitted to Physics Reports
- Published
- 2016
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4. Quantum Sensing for High Energy Physics
- Author
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Cynthia Jenks, Vesna Mitrovic, Matthew Dietrich, Paul D. Lett, Petra Merkel, Kevin J. O'Brien, Volodymyr Yefremenko, Roger Rusack, Mattia Checchin, Ian Shipsey, Sae Woo Nam, Nicholas A. Peters, Alexander Romanenko, Malcolm Boshier, Michael V. Fazio, Tenzin Rabga, David Underwood, Larry Lurio, Karen Byrum, John Zasadzinski, Gensheng Wang, Benjamin J. Lawrie, Jonathan King, Hogan Nguyen, Eve Kovacs, Howard Nicholson, Jeffrey R. Guest, Robert Wagner, Xuedan Ma, Amr S. Helmy, Andrew Sonnenschein, U. Patel, Jason W. Henning, Xufeng Zhang, Valerie Taylor, Yuekun Heng, Geoffrey T. Bodwin, C. M. Posada, Andrei Nomerotski, Jessica Metcalfe, Hal Finkel, Patrick J. Fox, Yuri Alexeev, Keith Schwab, Derek F. Jackson Kimball, Nathan Woollett, Karl van Bibber, Joseph Heremans, Akito Kusaka, Harry Weerts, David Hume, Zeeshan Ahmed, Jonathan Lewis, Pavel Lougovski, Marcel Demarteau, Roger O'Brient, John F. Mitchell, Ranjan Dharmapalan, Vishnu Zutshi, Gustavo Cancelo, Przemyslaw Bienias, D. Braga, Richard Kriske, Junqi Xie, Ron Harnik, Giorgio Apollinari, Kent D. Irwin, Vladan Vuletic, Gianpaolo Carosi, R. Tschirhart, Erik Shirokoff, Zelimir Djurcic, James E. Fast, M. Crisler, Sergei Chekanov, Junjia Ding, Karl K. Berggren, Jason M. Hogan, Asimina Arvanitaki, Aaron S. Chou, Donna Kubik, Holger Mueller, Johannes Hubmayr, Andrei Gaponenko, Michael L. Norman, Raphael C. Pooser, Salman Habib, Konrad Lehnert, Nick Karonis, Aashish A. Clerk, Peter Fierlinger, Raj Kettimuthu, Monika Schleier-Smith, J. Segal, David D. Awschalom, D. Bowring, Ian C. Cloët, S. Rescia, Edward May, Misun Min, Tijana Rajh, Sandeep Miryala, Bjoern Penning, Phay J. Ho, Andrew Geraci, Gerald Gabrielse, Christopher George Tully, Supratik Guha, Maurice Garcia-Sciveres, Jie Zhang, Thomas Cecil, John M. Doyle, Sergey Perverzev, C. L. Chang, Jimmy Proudfoot, and Antonino Miceli
- Subjects
Physics ,Particle physics ,Quantum sensor ,Experimental methods ,Domain (software engineering) - Abstract
Report of the first workshop to identify approaches and techniques in the domain of quantum sensing that can be utilized by future High Energy Physics applications to further the scientific goals of High Energy Physics.
- Published
- 2018
5. Expression of Interest for Evolution of the Mu2e Experiment
- Author
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R. Bonventre, G. Lukicov, R. Culbertson, P. Q. Hung, Brian Pollack, R. Tschirhart, A. Lucà, S. Giovannella, A. Mazzacane, Michael Schmitt, S. Donati, L. Xia, S. Boi, Y. Wang, K. S. Khaw, P. Murat, F. C. Porter, V. Lombardo, S. Mueller, Z. Usubov, Mayda Velasco, J. Whitmore, Gianantonio Pezzullo, B. Kiburg, Y. Oksuzian, J. P. Miller, Rashid M. Djilkibaev, M. Röhrken, David Neuffer, V. Giusti, J. Bono, R. Hooper, L. Harkness-Brennan, P. Fabbricatore, C. Gatto, G. Drake, D. Ambrose, M. Jones, M. Jenkins, Manolis Kargiantoulakis, J. F. Caron, S. Denisov, K. Heller, G. Horton-Smith, D. Glenzinski, F. Abusalma, S. Demers, C. Bloise, Dmitri Denisov, R. Coleman, K. L. Byrum, Ren-Yuan Zhu, A. Gaponenko, Markus Frank, Y. I. Davydov, Aji Daniel, R. Ciolini, V. Evdokimov, S. Miscetti, B. Echenard, D. Pasciuto, E. Diociaiuti, R. Zwaska, Steven Werkema, A. Artikov, D. Cronin-Hennessy, V. Zutshi, M. Ricci, D. Lin, Henry Glass, Richard L. Talaga, M. A. Cummings, Vitaly Pronskikh, A. Popov, P. Winter, D. Stratakis, Anna Pla-Dalmau, A. Edmonds, James L. Popp, N. H. Tran, L. Goodenough, E. Pedreschi, Luca Morescalchi, G. C. Blazey, D. G. Hitlin, John Quirk, D. Chokheli, F. Spinella, E. Prebys, K. R. Lynch, D. Pushka, A. Saputi, J. Mott, V. Nagaslaev, F. Happacher, S. Di Falco, M. Campbell, F. Cervelli, D. N. Brown, R. H. Bernstein, C. Hu, D. Hedin, Robert K. Kutschke, A. Hocker, J. Kozminski, M. Martini, A. Ferrari, R. Ehrlich, Thomas Strauss, Yu.G. Kolomensky, T. A. Bolton, I. Logashenko, Ed V. Hungerford, R. L. Wagner, D. Bowring, Z. Giorgio, E. C. Dukes, R. Donghia, K. Ciampa, V. Tereshchenko, L. Zhang, V. Rusu, M. Lancaster, Gregory Rakness, R. E. Ray, and I. Sarra
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Particle physics ,Upgrade ,Leverage (negotiation) ,Physics::Instrumentation and Detectors ,Computer science ,Mu2e ,Detector ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Fermilab ,Sensitivity (control systems) ,Order of magnitude ,Lepton - Abstract
We propose an evolution of the Mu2e experiment, called Mu2e-II, that would leverage advances in detector technology and utilize the increased proton intensity provided by the Fermilab PIP-II upgrade to improve the sensitivity for neutrinoless muon-to-electron conversion by one order of magnitude beyond the Mu2e experiment, providing the deepest probe of charged lepton flavor violation in the foreseeable future. Mu2e-II will use as much of the Mu2e infrastructure as possible, providing, where required, improvements to the Mu2e apparatus to accommodate the increased beam intensity and cope with the accompanying increase in backgrounds.
- Published
- 2018
6. Search for the rare decayK+→μ+νν¯ν
- Author
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Yoichi Tamagawa, A. Artamonov, M. Miyajima, J. Hu, Y. Yoshimura, O. V. Mineev, K. Mizouchi, George Redlinger, M. V. Diwan, A. N. Khotjantsev, Yu. G. Kudenko, R. Tschirhart, Takashi Nomura, A. Konaka, T. Fujiwara, Norihito Muramatsu, I-H. Chiang, A. Shaikhiev, P. S. Cooper, R. Poutissou, S. Sugimoto, D. V. Vavilov, D. I. Patalakha, A. O. Izmaylov, L. G. Landsberg, Masaaki Kobayashi, S. Kabe, Ewart W. Blackmore, T. Sato, L. S. Littenberg, I. A. Christidi, T. Sekiguchi, K. Omata, S. H. Kettell, V. Obraztsov, T. Tsunemi, J. Ives, T. Numao, Hanyu Wei, M. M. Khabibullin, J. A. Macdonald, Masaharu Nomachi, B. Bassalleck, Tamaki Yoshioka, B. Viren, Song Chen, N. V. Yershov, B. Lewis, T. Nakano, D. E. Jaffe, K. K. Li, Douglas Bryman, J. Mildenberger, R. C. Strand, T. K. Komatsubara, James Frank, P. Kitching, B. Bhuyan, T. Shinkawa, and Zhe Wang
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Physics ,Particle physics ,Muon ,010308 nuclear & particles physics ,0103 physical sciences ,010306 general physics ,National laboratory ,01 natural sciences - Abstract
Evidence of the ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}\ensuremath{\nu}\overline{\ensuremath{\nu}}\ensuremath{\nu}$ decay was searched for using E949 (Brookhaven National Laboratory, USA) experimental data with an exposure of $1.70\ifmmode\times\else\texttimes\fi{}1{0}^{12}$ stopped kaons. The data sample is dominated by the background process ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{\gamma}$. An upper limit on the decay rate $\mathrm{\ensuremath{\Gamma}}({K}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}\ensuremath{\nu}\overline{\ensuremath{\nu}}\ensuremath{\nu})l2.4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}\mathrm{\ensuremath{\Gamma}}({K}^{+}\ensuremath{\rightarrow}\text{all})$ at 90% confidence level was set assuming the standard model muon spectrum. The data are presented in such a way as to allow calculation of rates for any assumed ${\ensuremath{\mu}}^{+}$ spectrum.
- Published
- 2016
7. Search for heavy neutrinos inK+→μ+νHdecays
- Author
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L. S. Littenberg, P. S. Cooper, I. A. Christidi, R. Poutissou, K. Mizouchi, A. Artamonov, R. Tschirhart, T. Sato, J. Hu, M. Miyajima, T. Sekiguchi, Song Chen, Zhe Wang, O. V. Mineev, Tamaki Yoshioka, I. H. Chiang, N. V. Yershov, M. V. Diwan, Norihito Muramatsu, S. H. Kettell, D. V. Vavilov, A. N. Khotjantsev, Yoichi Tamagawa, Y. Yoshimura, P. Kitching, J. Ives, T. Numao, Yu. G. Kudenko, B. Bhuyan, J. A. Macdonald, B. Bassalleck, Takashi Nomura, Ewart W. Blackmore, L. G. Landsberg, A. Shaikhiev, A. Konaka, J. Mildenberger, R. C. Strand, T. Fujiwara, Masaharu Nomachi, V. Obraztsov, T. K. Komatsubara, K. K. Li, B. Viren, M. M. Khabibullin, Douglas Bryman, B. Lewis, T. Nakano, S. Kabe, D. E. Jaffe, D. I. Patalakha, James Frank, Masaaki Kobayashi, T. Shinkawa, Hanyu Wei, S. Sugimoto, A. O. Izmaylov, K. Omata, T. Tsunemi, and George Redlinger
- Subjects
Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Particle physics ,Muon ,010308 nuclear & particles physics ,0103 physical sciences ,Pontecorvo–Maki–Nakagawa–Sakata matrix ,Radiative transfer ,Heavy neutrino ,Neutrino ,010306 general physics ,01 natural sciences - Abstract
Evidence of a heavy neutrino, ν H , in the K + → μ + ν H decays was sought using the E949 experimental data with an exposure of 1.70 × 1 0 12 stopped kaons. With the major background from the radiative K + → μ + ν μ γ decay understood and suppressed, upper limits (90% C.L.) on the neutrino mixing matrix element between the muon and heavy neutrinos, | U μ H | 2 , were set at the level of 1 0 - 7 to 1 0 - 9 for the heavy neutrino mass region 175 to 300 MeV / c 2 .
- Published
- 2015
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