181. |
A test of time reversal invariance in stoppedK+decay |
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AIP Conference Proceedings,
Volume 549,
Issue 1,
1900,
Page 969-971
Michael D. Hasinoff,
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摘要:
An experiment to search for the T-violating transverse muon polarization inK+→&mgr;+&pgr;0&ngr;&mgr;decay(K&mgr;3+)is now underway at the KEK 12 GeV proton synchrotron in Japan. The experiment uses a stoppedK+beam and a large Superconducting Toroidal Spectrometer. The expected limit onP&mgr;⊥will set constraints on non-standard models of CP-violation such as the multi-Higgs doublet model. The experiment should finish data-taking by the end of 2000. ©2000 American Institute of Physics.
ISSN:0094-243X
DOI:10.1063/1.1345409
出版商:AIP
年代:1900
数据来源: AIP
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182. |
Search for T-violation in reactions with slow neutrons |
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AIP Conference Proceedings,
Volume 549,
Issue 1,
1900,
Page 972-975
E. Korobkina,
G. Danilyan,
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摘要:
The present state of art in search for T-violation in neutron induced reactions is briefly observed. The interest is focused on one interesting and still not well understood result, which is a recent observation of a non-vanished T-odd triple correlation in ternary fissionD(233U)=(−1.8±0.1)×10−3andD(235U)=(+0.52±0.06)×10−3.The puzzle is a value quite large even for the mimic final state effect. Since the theoretical estimation of the latter is rather complicated due to the fission complexity, we discuss an experimental approach to reveal the origin of this correlation. ©2000 American Institute of Physics.
ISSN:0094-243X
DOI:10.1063/1.1345410
出版商:AIP
年代:1900
数据来源: AIP
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183. |
Determination of &ggr; inB−→D0K−and related processes |
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AIP Conference Proceedings,
Volume 549,
Issue 1,
1900,
Page 976-978
David Atwood,
Isard Dunietz,
Amarjit Soni,
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摘要:
Direct CP violation in decays such asB−→D0K−are sensitive to the CKM angle &ggr; since these decays allow the interference ofb-quark toc-quark andb-quark tou-quark transitions. To determine &ggr; in this way, one must simultaneously extract the strong phases in the system. In this talk, I will discuss the measuring &ggr; through the use of various 2 and 3 body decay modes of theD0as well as the possible impact ofD0mixing. Such methods should find natural applications atB-factories and hadronicBfacilities. ©2000 American Institute of Physics.
ISSN:0094-243X
DOI:10.1063/1.1345411
出版商:AIP
年代:1900
数据来源: AIP
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184. |
Electric dipole moments of neutron and heavy atoms and constraints on CP SUSY phases |
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AIP Conference Proceedings,
Volume 549,
Issue 1,
1900,
Page 979-982
Maxim Pospelov,
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摘要:
Electric dipole moments provide a relatively unexpensive yet powerful tool of searching for new physics beyond the Standard Model. I discuss current problems in calculations of EDMs, mainly related to the strong interactions effects at the transition from the quark-gluon to hadronic description. These problems become especially important in the case of supersymmetric models whith several CP-violating phases, so that all existing experimental limits need to be used in order to extract reliable constraints on these phases. ©2000 American Institute of Physics.
ISSN:0094-243X
DOI:10.1063/1.1345412
出版商:AIP
年代:1900
数据来源: AIP
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185. |
Physics with polarized cold neutrons at the spallation source SINQ |
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AIP Conference Proceedings,
Volume 549,
Issue 1,
1900,
Page 983-985
K. Bodek,
P. Bo¨ni,
N. Danneberg,
W. Fetscher,
W. Haeberli,
C. Hilbes,
St. Kistryn,
J. Lang,
M. Lu¨thy,
M. Markiewicz,
A. Pusenkov,
A. Schebetov,
A. Serebrov,
J. Sromicki,
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摘要:
A new facility for particle physics has been installed at the spallation source SINQ. An experimental area has been constructed for a series of experiments fed by a high intensity, polarized cold neutron beam. The physics program for this new facility will focus on free neutron decay studies addressing mainly the questions of fundamental symmetries (time reversal and parity) in the weak interactions. ©2000 American Institute of Physics.
ISSN:0094-243X
DOI:10.1063/1.1345413
出版商:AIP
年代:1900
数据来源: AIP
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186. |
Search forD0−D0mixing and CP violation at CLEO |
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AIP Conference Proceedings,
Volume 549,
Issue 1,
1900,
Page 986-990
Alex Smith,
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摘要:
We present recent results of searches forD0−D0mixing, doubly-Cabibbo-suppressed decays, andCPviolation using 9 fb−1ofe+e−collisions collected with the CLEO II.V detector on and just below the&Ugr;(4S)resonance. We have observed the first signal for the “wrong-sign” decayD0→K+&pgr;−&pgr;0.Using theD0→K+&pgr;−final state, we limit the mixing parametersx′andy′to(1/2)x′2<0.041&percent;and−5.8&percent;<y′<1.0&percent;,respectively, and theCPasymmetry inD0→K+&pgr;−to−0.36<AD<0.30at the 95&percent; confidence level. We also measured theCPasymmetry in the decays ofD0to theCP-evenK+K−and&pgr;+&pgr;−final states to be(0.04±2.18(stat)±0.84(sys))&percent;and(1.94±3.22(stat)±0.84(sys))&percent;,respectively. ©2000 American Institute of Physics.
ISSN:0094-243X
DOI:10.1063/1.1345414
出版商:AIP
年代:1900
数据来源: AIP
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