Large<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CP</mml:mi></mml:math>Asymmetries in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mo>→</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mi>η</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mo>(</mml:mo><mml:mi /><mml:mrow><mml:msub><mml:mro

Eilam, G.; Gronau, Michael; Mendel, R. R.

doi:10.1103/physrevlett.74.4984

Cited by 39 publications

(44 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absence of these charmonium contributions precludes the extraction of the unitarity triangle angle γ that has been proposed in the literature [3,4,5,6,7,8].…”

Section: Discussion and Summarymentioning

confidence: 99%

See 1 more Smart Citation

Dalitz plot analysis ofB±→π±π±π∓decays

Aubert¹,

Karyotakis²,

Lees³

et al. 2009

Phys. Rev. D

View full text Add to dashboard Cite

We present a Dalitz plot analysis of charmless B ± decays to the final state π ± π ± π ∓ using a sample of (465 ± 5) × 10 6 BB pairs collected by the BABAR experiment at √ s = 10.58 GeV. We measure the branching fractions B(B ± → π ± π ± π ∓ ) = (15.2 ± 0.6 ± 1.2 ± 0.4) × 10 −6 , B(B ± → ρ 0 (770)π ± ) = (8.1 ± 0.7 ± 1.2 +0.4 −1.1 ) × 10 −6 , B(B ± → f2(1270)π ± ) = (1.57 ± 0.42 ± 0.16 +0.53−0.19 ) × 10 −6 , and B(B ± → π ± π ± π ∓ nonresonant) = (5.3 ± 0.7 ± 0.6 +1.1 −0.5 ) × 10 −6 , where the uncertainties are statistical, systematic, and model-dependent, respectively. Measurements of branching fractions for the modes B ± → ρ 0 (1450)π ± and B ± → f0(1370)π ± are also presented. We observe no significant direct CP asymmetries for the above modes, and there is no evidence for the decays B ± → f0(980)π ± , B ± → χc0π ± , or B ± → χc2π ± .PACS numbers: 13.25. Hw, 12.15.Hh, 11.30.Er INTRODUCTIONDecays of B mesons to three-body charmless final states probe the properties of the weak interaction through their dependence on the complex quark couplings described in the Cabibbo-Kobayashi-Maskawa (CKM) matrix [1,2]. Furthermore, these decays test dynamical models for hadronic B decays.One can measure direct CP asymmetries and constrain magnitudes and phases of the CKM matrix elements using individual channels that appear as intermediate resonances in the B ± → π ± π ± π ∓ decay. For example, the CKM angle γ could be extracted from the interference between the decay B ± → χ c0 π ± , which has no CPviolating phase (in the standard parametrization), and other modes such as B ± → ρ 0 (770)π ± [3,4,5,6,7,8].Studies of B ± → π ± π ± π ∓ can also be useful for a precise measurement of the CKM angle α. A theoretically clean determination of this angle can be obtained from the decay-time dependence of the interference between [11,12]). Charged B decays offer a large statistics sample with which to determine additional resonant or nonresonant contributions to the three-pion Dalitz plot that can affect the measurement of α. For example, the Dalitz plot analysis of B ± → π ± π ± π ∓ allows one to check for effects from B ± → ω(782)π ± , that could cause large direct CP violation due to ρ-ω mixing [13]. It is particularly important to limit the possible effects of broad scalar structures [including the so-called f 0 (600) or σ] and nonresonant contributions [14,15,16,17,18,19].Furthermore, a number of unexplained structures have been observed in charmless B decays to Kππ [20,21,22,23,24,25], KKπ [26,27], and KKK [23,28,29] final states. Verifying the presence of these structures in B± → π ± π ± π ∓ decays would help to determine their nature and involvement in hadronic B decays.In this paper we present an amplitude analysis of GeV. An additional total integrated luminosity of 44 fb −1 was recorded 40 MeV below the Υ (4S) resonance ("off-peak" data) and was used to study backgrounds. Compared to our previous publication [32], in addition to doubling the data sample we have included several improvements in reconstruction algorithms t...

show abstract

“…The absence of these charmonium contributions precludes the extraction of the unitarity triangle angle γ that has been proposed in the literature [3,4,5,6,7,8].…”

Section: Discussion and Summarymentioning

confidence: 99%

“…For example, the CKM angle γ could be extracted from the interference between the decay B ± → χ c0 π ± , which has no CPviolating phase (in the standard parametrization), and other modes such as B ± → ρ 0 (770)π ± [3,4,5,6,7,8].…”

Section: Introductionmentioning

confidence: 99%

Dalitz plot analysis ofB±→π±π±π∓decays

Aubert¹,

Karyotakis²,

Lees³

et al. 2009

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…Since the shift is calculable in terms of γ [see Eq. (27)], the theoretical error in determining γ using these processes is below one degree.…”

Section: Modementioning

confidence: 99%

“…Charmless three-body decays involving π + π − or K + K − obtain also contributions from cc resonant states, which involve relatively small rates and are expected to lead to sizable CP asymmetries [27,28,29].…”

Section: Measuring Magnitudes and Phases For Quasi Two-body Decaymentioning

confidence: 99%

Improved method for CKM constraints in charmless three-bodyBandBsdecays

et al. 2007

Self Cite

View full text Add to dashboard Cite

Recently Ciuchini, Pierini and Silvestrini proposed a method for constraining CKM parameters in B → Kππ and Bs → Kππ through phase measurements of amplitudes involving I = 3/2 K * π final states. We show that complementary information on CKM parameters may be obtained by studying the phases of ∆I = 1Hadronic uncertainties in these constraints from electroweak penguin operators O9 and O10, studied using flavor SU(3), are shown to be very small in B → Kππ and Bs → Kππ and somewhat larger in Bs → KKπ. The first processes imply a precise linear relation betweenρ andη, with a measurable slope and an intercept atη = 0 involving a theoretical error of 0.03. The decays Bs → Kππ permit a measurement of γ involving a theoretical error below a degree. We note that while time-dependence is required when studying B 0 decays at the Υ(4S), it may not be needed when studying Bs decays at hadronic colliders.

show abstract

“…In addition there is hope that the CP violating phase γ can be measured from the asymmetry in charged B meson charmless three body decays [2,4,5].…”

Section: Introductionmentioning

confidence: 99%

Penguin operators in nonresonantB−→MM¯π−
Fajfer
¹
,
Oakes
²
,
Pham
³

1999
Phys. Rev. D
39
1
45
0
View full text Add to dashboard Cite

We investigate the contributions coming from the penguin operators in the nonresonant B − → M M π − (M = π − , K − , K 0 ) decays. The effective Wilson coefficients of the the strong penguin operators O 4,6 are found to be relatively larger. We calculate the contributions arising from the O 4 and O 6 operators in the nonresonant decays B − → M M π − (M = π − , K − , K0 ) using a model combining heavy quark symmetry and the chiral symmetry, developed previously. We find that the forbidden nonresonant B − → K 0 K0 π − decay occurs through the strong penguin operators. These penguin contributions affect the branching ratios for B − → M M π − (M = π − , K − ) by only a few percent. The branching ratio for B − → K 0 K0 π − is estimated to be of the order 10 −6 .

show abstract

LargeCPAsymmetries inB±→ηc(

Cited by 39 publications

References 19 publications

Dalitz plot analysis ofB±→π±π±π∓decays

Dalitz plot analysis ofB±→π±π±π∓decays

Improved method for CKM constraints in charmless three-bodyBandBsdecays

Penguin operators in nonresonantB−→MM¯π−
Fajfer
¹
,
Oakes
²
,
Pham
³

1999
Phys. Rev. D
39
1
45
0
View full text Add to dashboard Cite

Contact Info

Product

Resources

About

LargeCPAsymmetries inB±→ηc(

Cited by 39 publications

References 19 publications

Dalitz plot analysis ofB±→π±π±π∓decays

Dalitz plot analysis ofB±→π±π±π∓decays

Improved method for CKM constraints in charmless three-bodyBandBsdecays

Penguin operators in nonresonantB−→MM¯π−Fajfer1, Oakes2, Pham3 1999Phys. Rev. D391450View full textAdd to dashboardCite

Contact Info

Product

Resources

About

Penguin operators in nonresonantB−→MM¯π−
Fajfer
¹
,
Oakes
²
,
Pham
³

1999
Phys. Rev. D
39
1
45
0
View full text Add to dashboard Cite