Evidence For B To K0bark And B0 To K0k0bar And Measurement Of The Branching Fraction And Search For Direct Cp Violation In B To K0pi
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Evidence For B To K0bark And B0 To K0k0bar And Measurement Of The Branching Fraction And Search For Direct Cp Violation In B To K0pi
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Author :
language : en
Publisher:
Release Date : 2005
Evidence For B To K0bark And B0 To K0k0bar And Measurement Of The Branching Fraction And Search For Direct Cp Violation In B To K0pi written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
The authors present evidence for the b 2!d penguin-dominated decays B 2!{bar K}°K and B° 2!K°{bar K}° with significances of 3.5 and 4.5 standard deviations, respectively. The results are based on a sample of 227 million [Upsilon](4S) 2!B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider at SLAC. We measure the branching fractions [Beta](B+ 2!{bar K}°K+) = (1.5 ± 0.5 ± 0.1) x 10−6 (
Measurement Of Cp Violation In B0 To Phi K0 And Of Branching Fraction And Cp Violation In B0 2 F0 980 K 0 Atop S
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Author :
language : en
Publisher:
Release Date : 2006
Measurement Of Cp Violation In B0 To Phi K0 And Of Branching Fraction And Cp Violation In B0 2 F0 980 K 0 Atop S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
The authors measure the time-dependent CP asymmetry parameters in B0 2!K+K-K0 based on a data sample of approximately 277 million B-meson pairs recorded at the Y(4S) resonance with the BABAR detector at the PEP-II B-meson Factory at SLAC. They reconstruct two-body B0 decays to [Phi](1020)K$0\atop{S}$ and [Phi](1020)K$0\atop{L}$. Using a time-dependent maximum-likelihood fit, they measure sin2[beta]eff([Phi]K0) = 0.48 ± 0.28 ± 0.10, and C([Phi]K0) = 0.16 ± 0.25 ± 0.09, where the first error is statistical, and the second is systematic. They also present measurements of the CP-violating asymmetries in the decay B0 2!f0(2![pi]+[pi]- )K$0\atop{S}$. The results are obtained from a data sample of 209 x 106 Y(4S) 2!B$\bar{B}$ decays, also collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. From a time-dependent maximum-likelihood fit they measure the mixing-induced CP violation parameter S(f0(980)K$0\atop{S}$) = - sin 2[beta]efff0(980)K$0\atop{S}$ = -0.95$+0.32\atop{-0.23}$ ± 0.10 and the direct CP violation parameter C(f0(980)K$0\atop{S}$) = - 0.24 ± 0.31 ± 0.15, where the first errors are statistical and the second systematic. Finally, they present a measurement of the branching fraction of the decay B0 2!f0(2![pi]+[pi]- )K$0\atop{S}$. From a time-dependent maximum likelihood fit to a data sample of 123 x 106 Y(4S) 2!B$\bar{B}$ decays they find 93.6 ± 13.6 ± 6.4 signal events corresponding to a branching fraction of [beta](B0 2!f0(980)(2![pi]+[pi]- )K0) = (6.0 ± 0.9 ± 0.6 ± 1.2) x 10-6, where the first error is statistical, the second systematic, and the third due to model uncertainties.
Measurements Of Branching Fractions In B 2 Phi K And B 2 Phi Pi And Search For Direct Cp Violation In B Sup 2 Phi K Sup
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Author :
language : en
Publisher:
Release Date : 2003
Measurements Of Branching Fractions In B 2 Phi K And B 2 Phi Pi And Search For Direct Cp Violation In B Sup 2 Phi K Sup written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
The authors present measurements of branching fractions in the b 2!s{bar s}s penguin-dominated decays B 2![phi]K and B° 2![phi]K° in a sample of approximately 89 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine [Beta](B+ 2![phi]K+) = (10.0{sub -0.8}{sup +0.9} ± 0.5) x 10−6 and [Beta](B° 2![phi]K°) = (8.4{sub -1.3}{sup +1.5} ± 0.5) x 10−6. Additionally, they measure the CP-violating charge asymmetry [Alpha]{sub CP}(B{sup ±} 2![phi]K{sup ±}) = 0.04 {+-} 0.09 {+-} 0.01, with a 90% confidence-level interval of [-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B+ 2![phi][pi]+, [Beta](B+ 2![phi][pi]+)
Measurements Of Branching Fractions In B K And B And Search For Direct Cp Violation In B Sup K Sup
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Author :
language : en
Publisher:
Release Date : 2003
Measurements Of Branching Fractions In B K And B And Search For Direct Cp Violation In B Sup K Sup written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
The authors present measurements of branching fractions in the b → s{bar s}s penguin-dominated decays B →?K+ and B° →?K° in a sample of approximately 89 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine?(B+ →?K+) = (10.0{sub -0.8}{sup +0.9} ± 0.5) x 10−6 and?(B° →?K°) = (8.4{sub -1.3}{sup +1.5} ± 0.5) x 10−6. Additionally, they measure the CP-violating charge asymmetry?{sub CP}(B{sup ±} →?K{sup ±}) = 0.04 {+-} 0.09 {+-} 0.01, with a 90% confidence-level interval of [-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B+ →??+,?(B+ →??+)
Measurement Of Branching Fractions And Cp Violating Asymmetries In B0 To K0k0bar And B To K0bark Decays At The Babar Experiment
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Author :
language : en
Publisher:
Release Date : 2007
Measurement Of Branching Fractions And Cp Violating Asymmetries In B0 To K0k0bar And B To K0bark Decays At The Babar Experiment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Over the last few years, the B factories have established the Cabbibo-Kobayashi-Maskawa mechanism of CP violation in the Standard Model through the study of the decays of B mesons. The focus of Belle and BaBar has now expanded to the search for signatures of new physics beyond the Standard Model, particularly through examination of flavor-changing neutral-current transitions, which proceed through diagrams involving virtual loops. These decays are suppressed in the Standard Model, increasing sensitivity to new-physics effects but decreasing branching fractions. Exploiting large and growing datasets, BaBar and Belle have made many measurements in loop decays where a b quark transitions to an s quark, observing hints of possible deviations from Standard Model expectations in CP-violating measurements.
Measurements Of Branching Fractions In B Yields Phi K And B Yields Phi Pi And Search For Direct Cp Violation In B Sup Yields Phi K Sup
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Author :
language : en
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Release Date : 2003
Measurements Of Branching Fractions In B Yields Phi K And B Yields Phi Pi And Search For Direct Cp Violation In B Sup Yields Phi K Sup written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
The authors present measurements of branching fractions in the b[yields] s[bar s]s penguin-dominated decays B[sup+][yields][phi]K[sup+] and B[sup 0][yields][phi]K[sup 0] in a sample of approximately 89 million B[bar B] pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine[Beta](B[sup+][yields][phi]K[sup+])= (10.0[sub -0.8][sup+0.9][+-] 0.5) x 10[sup -6] and[Beta](B[sup 0][yields][phi]K[sup 0])= (8.4[sub -1.3][sup+1.5][+-] 0.5) x 10[sup -6]. Additionally, they measure the CP-violating charge asymmetry[Alpha][sub CP](B[sup[+-]][yields][phi]K[sup[+-]])= 0.04[+-] 0.09[+-] 0.01, with a 90% confidence-level interval of[-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B[sup+][yields][phi][pi][sup+], [Beta](B[sup+][yields][phi][pi][sup+])
Measurement Of The Branching Fraction And Search For Direct Cp Violation In The Radiative Decay B K C B K Gamma With The Babar Detector
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Author : Tilmann Colberg
language : en
Publisher:
Release Date : 2002
Measurement Of The Branching Fraction And Search For Direct Cp Violation In The Radiative Decay B K C B K Gamma With The Babar Detector written by Tilmann Colberg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Measurement Of The Branching Fraction And Search For Direct Cp Violation In The Radiative Decay B K B K Gamma With The Babar Detector
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Author : Tilmann Colberg
language : en
Publisher:
Release Date : 2002
Measurement Of The Branching Fraction And Search For Direct Cp Violation In The Radiative Decay B K B K Gamma With The Babar Detector written by Tilmann Colberg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Branching Fractions In B Phi H And Search For Direct Cp Violation In B Phi K
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Author :
language : en
Publisher:
Release Date : 2003
Branching Fractions In B Phi H And Search For Direct Cp Violation In B Phi K written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
The authors present preliminary measurements of branching fractions of the b 2!s{bar s}s penguin-dominated decays B{sup ±} 2![phi]K{sup ±} and B° 2![phi]K° in a sample of approximately 89 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factor at SLAC. They determine [Beta](B{sup ±} 2![phi]K{sup ±}) = (10.0{sub -0.8}{sup +0.9}(stat.) {+-} 0.5(syst.)) x 10−6 and [Beta](B° 2![phi]K°) = (7.6{sub -1.2}{sup +1.3}(stat.) {+-} 0.5(syst.)) x 10−6. Additionally, they measure the charge asymmetry [Alpha]{sub CP}(B{sup {+-}} 2![phi]K{sup {+-}}) = 0.039 {+-} 0.086(stat.) {+-} 0.011(syst.) and set an upper limit on the CKM- and color-suppressed decay B{sup {+-}} 2![phi][pi]{sup {+-}}, [Beta](B{sup {+-}} 2![phi][pi]{sup {+-}})
Measurement Of Branching Fractions And Cp Violation In B Nck And Observation Of B Ppk
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Author :
language : en
Publisher:
Release Date : 2003
Measurement Of Branching Fractions And Cp Violation In B Nck And Observation Of B Ppk written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
We report measurements of branching fractions for charged and neutral B -> ncK decays, and determine the nc mass and width. The results are based on an analysis of 29.1 fb-1 of data collected by the Belle detector at KEKB. We also report a measurement of the CP violation parameter sin©ı1) ימ 0ֶ ־> מד0ּף גבףוה ןמ במ במבלשףיף ןז ב 78 זג־1 ןז הבפב ףבםנלו. �ו עונןעפ פטו ןגףועצבפיןמ ןז פטו הודבש םןהו ״ֶ־־> ננ״ּ גבףוה ןמ במ במבלשףיף ןז 29.4 זג ־1 ןז הבפב דןללודפוה גש פטו וֶללו הופודפןע בפ .ֶֹּּ �טיף יף פטו זיעףפ ורבםנלו ןז ב ג ־> ף פעבמףיפיןמ קיפט גבעשןמף ימ פטו זימבל ףפבפו. �טו ננ םבףף ףנודפעץם ימ פטיף הודבש יף ימדןמףיףפומפ קיפט נטבףו ףנבדו במה יף נובכוה בפ לןק םבףף. �טו געבמדטימח זעבדפיןמ זןע פטיף הודבש יף םובףץעוה פן גו ֶ" -> ppK") = ڃڋٽۋۍڲۍڀچڃچ ڂڅڃڍپ ٲ څڃډٽۋ�ۋۍپپ ۓ چڅڂڊڃ ڨڶ ڲڹۋۄ ۊڶۅۄۊۍ ێۅۅڶۊ ڹڻھڻۍۋ ڷۄۊ ۍںڶ ڵڶڴڲ�ۋ ږڅ ڂڒ ۅۅڞۋ ڲۀڵ ږٲ ڂڒ ۅۅ�ڃٲ