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13 results on '"L. Duong"'

1. Search for axions with the CDMS experiment

Author

R. Bunker, J. Hall, A. Reisetter, P. L. Brink, W. Rau, F. DeJongh, Donald J. Holmgren, D. Balakishiyeva, Bernard Sadoulet, M. Pyle, M. R. Dragowsky, L. Hsu, S. A. Hertel, J. Yoo, Jeffrey P. Filippini, David Moore, D. O. Caldwell, D. N. Seitz, S. Arrenberg, L. Duong, Martin E. Huber, Tarek Saab, X. Qiu, N. Mirabolfathi, R. W. Ogburn, Jodi Cooley, Sunil Golwala, E. J. Ramberg, J. Sander, Betty A. Young, D. S. Akerib, Z. Ahmed, R. Mahapatra, K. M. Sundqvist, M. Kos, H. N. Nelson, S. J. Yellin, Kevin A. McCarthy, C. N. Bailey, Enectali Figueroa-Feliciano, O. Kamaev, R. Hennings-Yeomans, Darren Grant, G. Wang, T. Bruch, Bruno Serfass, R. W. Schnee, Blas Cabrera, Steven W. Leman, P. Cushman, Laura Baudis, M. Kiveni, J. Beaty, Matthew Fritts, Vuk Mandic, D. A. Bauer, and M. Tarka

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, Elementary particle, Fermion, 7. Clean energy, 01 natural sciences, Galaxy, High Energy Physics - Experiment, Massless particle, High Energy Physics - Experiment (hep-ex), High Energy Physics::Theory, 0103 physical sciences, High Energy Physics::Experiment, Cryogenic Dark Matter Search, 010306 general physics, Axion, Lepton
Abstract

We report on the first axion search results from the Cryogenic Dark Matter Search (CDMS) experiment at the Soudan Underground Laboratory. An energy threshold of 2 keV for electron-recoil events allows a search for possible solar axion conversion into photons or local Galactic axion conversion into electrons in the germanium crystal detectors. The solar axion search sets an upper limit on the Primakov coupling $g_{a\gamma\gamma}$ of 2.4$ \times 10^{-9}$ GeV$^{-1}$ at the 95% confidence level for an axion mass less than 0.1 keV/c$^2$. This limit benefits from the first precise measurement of the absolute crystal plane orientations in this type of experiment. The Galactic axion search analysis sets a world-leading experimental upper limit on the axio-electric coupling $g_{a\bar{e}e}$ of 1.4$ \times 10^{-12}$ at the 90 % confidence level for an axion mass of 2.5 keV/c$^2$. This analysis excludes an interpretation of the DAMA annual modulation result in terms of Galactic axion interactions for axion masses above 1.4 keV/c$^2$., Comment: 5 pages, 5 figures

Published
2009

2. Search for weakly interacting massive particles with the first five-tower data from the cryogenic dark matter search at the soudan underground laboratory

Author

Z. Ahmed, F. DeJongh, S. Arrenberg, R. W. Ogburn, K. M. Sundqvist, D. A. Bauer, J. Beaty, B. Serfass, S. A. Hertel, Bernard Sadoulet, Blas Cabrera, Tarek Saab, Jodi Cooley, R. Bunker, M. Pyle, J. Sander, J. Hall, M. Tarka, X. Qiu, T. Bruch, D. N. Seitz, A. Reisetter, Betty A. Young, Adam Sirois, W. Rau, C. N. Bailey, Darren Grant, L. Novak, N. Mirabolfathi, Jeffrey P. Filippini, M. R. Dragowsky, Astrid Tomada, L. Duong, R. Mahapatra, Matthew Fritts, R. J. Gaitskell, P. L. Brink, Martin E. Huber, Vuk Mandic, David O. Caldwell, R. Hennings-Yeomans, Donald J. Holmgren, S. J. Yellin, J. Yoo, Kevin A. McCarthy, E. J. Ramberg, Enectali Figueroa-Feliciano, R. Schmitt, Sunil Golwala, D. S. Akerib, P. Cushman, S. Burke, R. W. Schnee, Laura Baudis, J. Emes, H. N. Nelson, M. J. Attisha, and G. Wang

Subjects
Physics, Particle physics, DAMA/LIBRA, 010308 nuclear & particles physics, Dark matter, Massive particle, General Physics and Astronomy, Supersymmetry, 01 natural sciences, Nuclear physics, WIMP, Weakly interacting massive particles, 0103 physical sciences, Cryogenic Dark Matter Search, 010306 general physics, Light dark matter
Abstract

We report results from the Cryogenic Dark Matter Search at the Soudan Underground Laboratory (CDMS II) featuring the full complement of 30 detectors. A blind analysis of data taken between October 2006 and July 2007 sets an upper limit on the weakly interacting massive particle (WIMP) nucleon spin-independent cross section of 6.6x10;{-44} cm;{2} (4.6x10;{-44} cm;{2} when combined with previous CDMS II data) at the 90% confidence level for a WIMP mass of 60 GeV/c;{2}. This achieves the best sensitivity for dark matter WIMPs with masses above 44 GeV/c;{2}, and significantly restricts the parameter space for some favored supersymmetric models.

Published
2008

3. Search for Lorentz and CPT violation effects in muon spin precession

Author

A. Lam, G. T. Danby, I. Logashenko, V. P. Druzhinin, Frederick Gray, A. Grossmann, F. Krienen, E. P. Sichtermann, M. F. Hare, G. Bunce, L. Duong, Satish Dhawan, O. Rind, Wuzheng Meng, William Deninger, B.I. Khazin, D. Urner, Lawrence Sulak, J. P. Miller, H. N. Brown, P. Cushman, M. Kawamura, S. Sedykh, P. T. Debevec, F. J. M. Farley, Q. Peng, M. Sossong, B. L. Roberts, D. Nikas, I. Kronkvist, C. S. Özben, G. zu Putlitz, A. Yamamoto, S. I. Redin, J. Kindem, X. Huang, M. Grosse-Perdekamp, D. Warburton, D. Zimmerman, J. Pretz, Yu. M. Shatunov, C. C. Polly, J. M. Paley, D. W. Hertzog, Yuri F. Orlov, D. Kawall, E. P. Solodov, B. Bousquet, N.M. Ryskulov, R. M. Carey, C. J. G. Onderwater, S. Giron, R. Prigl, J. Mi, Y. Mizumachi, V. W. Hughes, T. Qian, G. W. Bennett, C. Timmermans, R. McNabb, William Morse, G.V. Fedotovich, Alexei Trofimov, E. Efstathiadis, A. Steinmetz, Y.Y. Lee, D.N. Grigoriev, P. von Walter, Rasmus Larsen, H. Deng, D. Winn, Yannis K. Semertzidis, M. Deile, P. M. Shagin, Klaus-Peter Jungmann, Masahiko Iwasaki, and KVI - Center for Advanced Radiation Technology

Subjects
Larmor precession, Physics, Particle physics, Muon, Anomalous magnetic dipole moment, CPT symmetry, VALUES, SYMMETRY, HIGHER-DIMENSIONAL THEORIES, General Physics and Astronomy, Muon spin spectroscopy, Omega, STRINGS, INVARIANCE, Standard Model, High Energy Physics - Experiment, High Energy Physics - Phenomenology, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, High Energy Physics::Experiment, ANOMALOUS MAGNETIC-MOMENT, SPACED DATA, Spin-½
Abstract

The spin precession frequency of muons stored in the $(g-2)$ storage ring has been analyzed for evidence of Lorentz and CPT violation. Two Lorentz and CPT violation signatures were searched for: a nonzero $\Delta\omega_{a}$ (=$\omega_{a}^{\mu^{+}}-\omega_{a}^{\mu^{-}}$); and a sidereal variation of $\omega_{a}^{\mu^{\pm}}$. No significant effect is found, and the following limits on the standard-model extension parameters are obtained: $b_{Z} =-(1.0 \pm 1.1)\times 10^{-23}$ GeV; $(m_{\mu}d_{Z0}+H_{XY}) = (1.8 \pm 6.0 \times 10^{-23})$ GeV; and the 95% confidence level limits $\check{b}_{\perp}^{\mu^{+}}< 1.4 \times 10^{-24}$ GeV and $\check{b}_{\perp}^{\mu^{-}} < 2.6 \times 10^{-24}$ GeV., Comment: 5 pages, 3 figures, submitted to Physical Review Letters, Modified to answer the referees suggestions

Published
2008

4. Publisher’s Note: Measurement of the Positive Muon Anomalous Magnetic Moment to 0.7 ppm [Phys. Rev. Lett.89, 101804 (2002)]

Author

D. Warburton, M. Grosse-Perdekamp, X. Huang, M. Sossing, Rasmus Larsen, H. Deng, Alexei Trofimov, E. Efstathiadis, A. Steinmetz, D.N. Grigoriev, G. W. Bennett, Yuri F. Orlov, G. T. Danby, P. von Walter, A. Lam, F. Krienen, V. W. Hughes, William Morse, O. Rind, J. M. Paley, G.V. Fedotovich, C. Ozben, D. Urner, P. Cushman, Yu. M. Shatunov, H. N. Brown, C. C. Polly, S. Giron, Wuzheng Meng, V. P. Druzhinin, J. Pretz, F. J. M. Farley, T. Qian, I. Kronkvist, R. M. Carey, S.I. Redin, B. I. Khazin, E. P. Solodov, C. J. G. Onderwater, G. zu Putlitz, N.M. Ryskulov, D. W. Hertzog, Y.Y. Lee, Klaus-Peter Jungmann, G. Bunce, J. P. Miller, R. Prigl, L. R. Sulak, Masahiko Iwasaki, B. L. Roberts, E. P. Sichtermann, M. F. Hare, William Deninger, A. Grossmann, Yannis K. Semertzidis, I.B. Logashenko, D. Nikas, D. Kawall, J. Kindem, M. Deile, L. Duong, P. M. Shagin, J. Mi, B. Bousquet, R. McNabb, F. Gray, Satish Dhawan, P. T. Debevec, A. Yamamoto, and Q. Peng

Subjects
Physics, Muon, Anomalous magnetic dipole moment, Neutron magnetic moment, Condensed matter physics, Proton magnetic moment, Nuclear magnetic moment, General Physics and Astronomy, Magnetic dipole, Electron magnetic dipole moment, Spin magnetic moment
Published
2002
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5. Results from a low-energy analysis of the CDMS II germanium data.

Author

Ahmed Z, Akerib DS, Arrenberg S, Bailey CN, Balakishiyeva D, Baudis L, Bauer DA, Brink PL, Bruch T, Bunker R, Cabrera B, Caldwell DO, Cooley J, do Couto e Silva E, Cushman P, Daal M, DeJongh F, Di Stefano P, Dragowsky MR, Duong L, Fallows S, Figueroa-Feliciano E, Filippini J, Fox J, Fritts M, Golwala SR, Hall J, Hennings-Yeomans R, Hertel SA, Holmgren D, Hsu L, Huber ME, Kamaev O, Kiveni M, Kos M, Leman SW, Liu S, Mahapatra R, Mandic V, McCarthy KA, Mirabolfathi N, Moore D, Nelson H, Ogburn RW, Phipps A, Pyle M, Qiu X, Ramberg E, Rau W, Reisetter A, Resch R, Saab T, Sadoulet B, Sander J, Schnee RW, Seitz DN, Serfass B, Sundqvist KM, Tarka M, Wikus P, Yellin S, Yoo J, Young BA, and Zhang J

Abstract

We report results from a reanalysis of data from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Data taken between October 2006 and September 2008 using eight germanium detectors are reanalyzed with a lowered, 2 keV recoil-energy threshold, to give increased sensitivity to interactions from weakly interacting massive particles (WIMPs) with masses below ∼10  GeV/c(2). This analysis provides stronger constraints than previous CDMS II results for WIMP masses below 9  GeV/c(2) and excludes parameter space associated with possible low-mass WIMP signals from the DAMA/LIBRA and CoGeNT experiments., (© 2011 American Physical Society)

Published
2011
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6. Search for axions with the CDMS experiment.

Author

Ahmed Z, Akerib DS, Arrenberg S, Bailey CN, Balakishiyeva D, Baudis L, Bauer DA, Beaty J, Brink PL, Bruch T, Bunker R, Cabrera B, Caldwell DO, Cooley J, Cushman P, Dejongh F, Dragowsky MR, Duong L, Figueroa-Feliciano E, Filippini J, Fritts M, Golwala SR, Grant DR, Hall J, Hennings-Yeomans R, Hertel S, Holmgren D, Hsu L, Huber ME, Kamaev O, Kiveni M, Kos M, Leman SW, Mahapatra R, Mandic V, Moore D, McCarthy KA, Mirabolfathi N, Nelson H, Ogburn RW, Pyle M, Qiu X, Ramberg E, Rau W, Reisetter A, Saab T, Sadoulet B, Sander J, Schnee RW, Seitz DN, Serfass B, Sundqvist KM, Tarka M, Wang G, Yellin S, Yoo J, and Young BA

Abstract

We report on the first axion search results from the Cryogenic Dark Matter Search (CDMS) experiment at the Soudan Underground Laboratory. An energy threshold of 2 keV for electron-recoil events allows a search for possible solar axion conversion into photons or local galactic axion conversion into electrons in the germanium crystal detectors. The solar axion search sets an upper limit on the Primakov coupling g(agammagamma) of 2.4x10(-9) GeV-1 at the 95% confidence level for an axion mass less than 0.1 keV/c2. This limit benefits from the first precise measurement of the absolute crystal plane orientations in this type of experiment. The galactic axion search analysis sets a world-leading experimental upper limit on the axioelectric coupling g(aee) of 1.4x10(-12) at the 90% confidence level for an axion mass of 2.5 keV/c2.

Published
2009
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7. Search for weakly interacting massive particles with the first five-tower data from the cryogenic dark matter search at the soudan underground laboratory.

Author

Ahmed Z, Akerib DS, Arrenberg S, Attisha MJ, Bailey CN, Baudis L, Bauer DA, Beaty J, Brink PL, Bruch T, Bunker R, Burke S, Cabrera B, Caldwell DO, Cooley J, Cushman P, Dejongh F, Dragowsky MR, Duong L, Emes J, Figueroa-Feliciano E, Filippini J, Fritts M, Gaitskell RJ, Golwala SR, Grant DR, Hall J, Hennings-Yeomans R, Hertel S, Holmgren D, Huber ME, Mahapatra R, Mandic V, McCarthy KA, Mirabolfathi N, Nelson H, Novak L, Ogburn RW, Pyle M, Qiu X, Ramberg E, Rau W, Reisetter A, Saab T, Sadoulet B, Sander J, Schmitt R, Schnee RW, Seitz DN, Serfass B, Sirois A, Sundqvist KM, Tarka M, Tomada A, Wang G, Yellin S, Yoo J, and Young BA

Abstract

We report results from the Cryogenic Dark Matter Search at the Soudan Underground Laboratory (CDMS II) featuring the full complement of 30 detectors. A blind analysis of data taken between October 2006 and July 2007 sets an upper limit on the weakly interacting massive particle (WIMP) nucleon spin-independent cross section of 6.6x10;{-44} cm;{2} (4.6x10;{-44} cm;{2} when combined with previous CDMS II data) at the 90% confidence level for a WIMP mass of 60 GeV/c;{2}. This achieves the best sensitivity for dark matter WIMPs with masses above 44 GeV/c;{2}, and significantly restricts the parameter space for some favored supersymmetric models.

Published
2009
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8. Search for Lorentz and CPT violation effects in Muon spin precession.

Author

Bennett GW, Bousquet B, Brown HN, Bunce G, Carey RM, Cushman P, Danby GT, Debevec PT, Deile M, Deng H, Deninger W, Dhawan SK, Druzhinin VP, Duong L, Efstathiadis E, Farley FJ, Fedotovich GV, Giron S, Gray FE, Grigoriev D, Grosse-Perdekamp M, Grossmann A, Hare MF, Hertzog DW, Huang X, Hughes VW, Iwasaki M, Jungmann K, Kawall D, Kawamura M, Khazin BI, Kindem J, Krienen F, Kronkvist I, Lam A, Larsen R, Lee YY, Logashenko I, McNabb R, Meng W, Mi J, Miller JP, Mizumachi Y, Morse WM, Nikas D, Onderwater CJ, Orlov Y, Ozben CS, Paley JM, Peng Q, Polly CC, Pretz J, Prigl R, zu Putlitz G, Qian T, Redin SI, Rind O, Roberts BL, Ryskulov N, Sedykh S, Semertzidis YK, Shagin P, Shatunov YM, Sichtermann EP, Solodov E, Sossong M, Steinmetz A, Sulak LR, Timmermans C, Trofimov A, Urner D, von Walter P, Warburton D, Winn D, Yamamoto A, and Zimmerman D

Abstract

The spin precession frequency of muons stored in the (g-2) storage ring has been analyzed for evidence of Lorentz and CPT violation. Two Lorentz and CPT violation signatures were searched for a nonzero delta omega a(=omega a mu+ - omega a mu-) and a sidereal variation of omega a mu+/-). No significant effect is found, and the following limits on the standard-model extension parameters are obtained: bZ = -(1.0+/-1.1) x 10(-23) GeV; (m mu dZ0 + HXY)=(1.8+/-6.0) x 10(-23) GeV; and the 95% confidence level limits b perpendicular mu+ <1.4 x 10(-24) GeV and b perpendicular mu- <2.6 x 10(-24) GeV.

Published
2008
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9. Limits on spin-independent interactions of weakly interacting massive particles with nucleons from the two-tower run of the cryogenic dark matter search.

Author

Akerib DS, Attisha MJ, Bailey CN, Baudis L, Bauer DA, Brink PL, Brusov PP, Bunker R, Cabrera B, Caldwell DO, Chang CL, Cooley J, Crisler MB, Cushman P, Daal M, Dixon R, Dragowsky MR, Driscoll DD, Duong L, Ferril R, Filippini J, Gaitskell RJ, Golwala SR, Grant DR, Hennings-Yeomans R, Holmgren D, Huber ME, Kamat S, Leclercq S, Lu A, Mahapatra R, Mandic V, Meunier P, Mirabolfathi N, Nelson H, Nelson R, Ogburn RW, Perera TA, Pyle M, Ramberg E, Rau W, Reisetter A, Ross RR, Sadoulet B, Sander J, Savage C, Schnee RW, Seitz DN, Serfass B, Sundqvist KM, Thompson JP, Wang G, Yellin S, Yoo J, and Young BA

Abstract

We report new results from the Cryogenic Dark Matter Search (CDMS II) at the Soudan Underground Laboratory. Two towers, each consisting of six detectors, were operated for 74.5 live days, giving spectrum-weighted exposures of 34 (12) kg d for the Ge (Si) targets after cuts, averaged over recoil energies 10-100 keV for a weakly interacting massive particle (WIMP) mass of 60 GeV/c2. A blind analysis was conducted, incorporating improved techniques for rejecting surface events. No WIMP signal exceeding expected backgrounds was observed. When combined with our previous results from Soudan, the 90% C.L. upper limit on the spin-independent WIMP-nucleon cross section is 1.6 x 10(-43) cm2 from Ge and 3 x 10(-42) cm2 from Si, for a WIMP mass of 60 GeV/c2. The combined limit from Ge (Si) is a factor of 2.5 (10) lower than our previous results and constrains predictions of supersymmetric models.

Published
2006
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10. First results from the Cryogenic Dark Matter Search in the Soudan Underground Laboratory.

Author

Akerib DS, Alvaro-Dean J, Armel-Funkhouser MS, Attisha MJ, Baudis L, Bauer DA, Beaty J, Brink PL, Bunker R, Burke SP, Cabrera B, Caldwell DO, Callahan D, Castle JP, Chang CL, Choate R, Crisler MB, Cushman P, Dixon R, Dragowsky MR, Driscoll DD, Duong L, Emes J, Ferril R, Filippini J, Gaitskell RJ, Haldeman M, Hale D, Holmgren D, Huber ME, Johnson B, Johnson W, Kamat S, Kozlovsky M, Kula L, Kyre S, Lambin B, Lu A, Mahapatra R, Manalaysay AG, Mandic V, May J, McDonald R, Merkel B, Meunier P, Mirabolfathi N, Morrison S, Nelson H, Nelson R, Novak L, Ogburn RW, Orr S, Perera TA, Perillo Isaac MC, Ramberg E, Rau W, Reisetter A, Ross RR, Saab T, Sadoulet B, Sander J, Savage C, Schmitt RL, Schnee RW, Seitz DN, Serfass B, Smith A, Smith G, Spadafora AL, Sundqvist K, Thompson JP, Tomada A, Wang G, Williams J, Yellin S, and Young BA

Abstract

We report the first results from a search for weakly interacting massive particles (WIMPs) in the Cryogenic Dark Matter Search experiment at the Soudan Underground Laboratory. Four Ge and two Si detectors were operated for 52.6 live days, providing 19.4 kg d of Ge net exposure after cuts for recoil energies between 10 and 100 keV. A blind analysis was performed using only calibration data to define the energy threshold and selection criteria for nuclear-recoil candidates. Using the standard dark-matter halo and nuclear-physics WIMP model, these data set the world's lowest exclusion limits on the coherent WIMP-nucleon scalar cross section for all WIMP masses above 15 GeV/c2, ruling out a significant range of neutralino supersymmetric models. The minimum of this limit curve at the 90% C.L. is 4 x 10(-43) cm2 at a WIMP mass of 60 GeV/c2.

Published
2004
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11. Measurement of the negative muon anomalous magnetic moment to 0.7 ppm.

Author

Bennett GW, Bousquet B, Brown HN, Bunce G, Carey RM, Cushman P, Danby GT, Debevec PT, Deile M, Deng H, Dhawan SK, Druzhinin VP, Duong L, Farley FJ, Fedotovich GV, Gray FE, Grigoriev D, Grosse-Perdekamp M, Grossmann A, Hare MF, Hertzog DW, Huang X, Hughes VW, Iwasaki M, Jungmann K, Kawall D, Khazin BI, Krienen F, Kronkvist I, Lam A, Larsen R, Lee YY, Logashenko I, McNabb R, Meng W, Miller JP, Morse WM, Nikas D, Onderwater CJ, Orlov Y, Ozben CS, Paley JM, Peng Q, Polly CC, Pretz J, Prigl R, Zu Putlitz G, Qian T, Redin SI, Rind O, Roberts BL, Ryskulov N, Semertzidis YK, Shagin P, Shatunov YM, Sichtermann EP, Solodov E, Sossong M, Sulak LR, Trofimov A, von Walter P, and Yamamoto A

Abstract

The anomalous magnetic moment of the negative muon has been measured to a precision of 0.7 ppm (ppm) at the Brookhaven Alternating Gradient Synchrotron. This result is based on data collected in 2001, and is over an order of magnitude more precise than the previous measurement for the negative muon. The result a(mu(-))=11 659 214(8)(3) x 10(-10) (0.7 ppm), where the first uncertainty is statistical and the second is systematic, is consistent with previous measurements of the anomaly for the positive and the negative muon. The average of the measurements of the muon anomaly is a(mu)(exp)=11 659 208(6) x 10(-10) (0.5 ppm).

Published
2004
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12. Measurement of the positive muon anomalous magnetic moment to 0.7 ppm.

Author

Bennett GW, Bousquet B, Brown HN, Bunce G, Carey RM, Cushman P, Danby GT, Debevec PT, Deile M, Deng H, Deninger W, Dhawan SK, Druzhinin VP, Duong L, Efstathiadis E, Farley FJ, Fedotovich GV, Giron S, Gray FE, Grigoriev D, Grosse-Perdekamp M, Grossmann A, Hare MF, Hertzog DW, Huang X, Hughes VW, Iwasaki M, Jungmann K, Kawall D, Khazin BI, Kindem J, Krienen F, Kronkvist I, Lam A, Larsen R, Lee YY, Logashenko I, McNabb R, Meng W, Mi J, Miller JP, Morse WM, Nikas D, Onderwater CJ, Orlov Y, Ozben CS, Paley JM, Peng Q, Polly CC, Pretz J, Prigl R, Zu Putlitz G, Qian T, Redin SI, Rind O, Roberts BL, Ryskulov N, Shagin P, Semertzidis YK, Shatunov YM, Sichtermann EP, Solodov E, Sossong M, Steinmetz A, Sulak LR, Trofimov A, Urner D, Von Walter P, Warburton D, and Yamamoto A

Abstract

A higher precision measurement of the anomalous g value, a(mu)=(g-2)/2, for the positive muon has been made at the Brookhaven Alternating Gradient Synchrotron, based on data collected in the year 2000. The result a(mu(+))=11 659 204(7)(5)x10(-10) (0.7 ppm) is in good agreement with previous measurements and has an error about one-half that of the combined previous data. The present world average experimental value is a(mu)(expt)=11 659 203(8)x10(-10) (0.7 ppm).

Published
2002
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13. Precise measurement of the positive muon anomalous magnetic moment.

Author

Brown HN, Bunce G, Carey RM, Cushman P, Danby GT, Debevec PT, Deile M, Deng H, Deninger W, Dhawan SK, Druzhinin VP, Duong L, Efstathiadis E, Farley FJ, Fedotovich GV, Giron S, Gray F, Grigoriev D, Grosse-Perdekamp M, Grossmann A, Hare MF, Hertzog DW, Hughes VW, Iwasaki M, Jungmann K, Kawall D, Kawamura M, Khazin BI, Kindem J, Krienen F, Kronkvist I, Larsen R, Lee YY, Logashenko I, McNabb R, Meng W, Mi J, Miller JP, Morse WM, Nikas D, Onderwater CJ, Orlov Y, Ozben CS, Paley JM, Polly C, Pretz J, Prigl R, zu Putlitz G, Redin SI, Rind O, Roberts BL, Ryskulov N, Sedykh S, Semertzidis YK, Shatunov YM, Sichtermann EP, Solodov E, Sossong M, Steinmetz A, Sulak LR, Timmermans C, Trofimov A, Urner D, von Walter P, Warburton D, Winn D, Yamamoto A, and Zimmerman D

Abstract

A precise measurement of the anomalous g value, a(mu) = (g-2)/2, for the positive muon has been made at the Brookhaven Alternating Gradient Synchrotron. The result a(mu+) = 11 659 202(14) (6) x 10(-10) (1.3 ppm) is in good agreement with previous measurements and has an error one third that of the combined previous data. The current theoretical value from the standard model is a(mu)(SM) = 11 659 159.6(6.7) x 10(-10) (0.57 ppm) and a(mu)(exp) - a(mu)(SM) = 43(16) x 10(-10) in which a(mu)(exp) is the world average experimental value.

Published
2001
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