<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>U</mml:mi></mml:math>
-spin sum rules for 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>
 asymmetries of three-body charmed baryon decays

Grossman, Yuval; Schacht, Stefan

doi:10.1103/physrevd.99.033005

Cited by 34 publications

(25 citation statements)

References 77 publications

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“…The triangle relations derived by [14,20,23] still hold since the isospin symmetry preserves in κ(m 2 23 ). However, the relations from the U-spin symmetry [24] may be broken by κ(m 2 23 ) due to the large mass differences of hadrons. The predicted decay branching ratio of B(Λ + c → nπ +K 0 ) = (1.1 ± 0.1)% is 3 times smaller than (3.6 ± 0.6)% by the BESIII observation [32].…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Up-down asymmetries of charmed baryon three-body decays

et al. 2019

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We study the up-down asymmetries in the three-body anti-triplet charmed baryon decays ofwhile B n and M ( ′ ) denote octet baryon and meson states, respectively. By assuming the s-wave meson-pairs to be the dominant constituents in final state configurations, we can write the spin-dependent decay amplitude into parity-conserving and parity-violating parts, parametrized by 6 real parameters under SU (3) f , respectively. Fitting these parameters by 16 experimental data points with the minimum χ 2 method, we obtain that χ 2 /d.o.f = 2.4, which a reasonable fit. With the fitted parameters, we evaluate the up-down asymmetries along with the decay branching ratios of B c → B n M M ′ . Some of these up-down asymmetries are accessible to the experiments at BESIII, BELLE-II and LHCb.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Up-down asymmetries of charmed baryon three-body decays

et al. 2019

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“…The two C P asymmetries in A C P have opposite sign and hence are constructive in A C P . But the two C P asymmetries in A baryon C P , as pointed out in [73], do not have a relation like the ones in A C P . Prospects of measuring the C P asymmetries of charmed baryon decays on LHCb [95], as well as Belle II [96], are bright.…”

Section: Introductionmentioning

confidence: 88%

“…On the other a e-mail: dwang15@lzu.edu.cn hand, with the discovery of doubly charmed baryon [3][4][5] and the progress of singly charmed baryon measurements [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], plenty of theoretical interests focus on charmed baryon decays . However, only a few publications studied the C P asymmetries in charmed baryon decays [62,73,82]. The difference between C P asymmetries of + c → pK + K − and + c → pπ + π − modes has been measured by the LHCb Collaboration [21] and no signal of C P violation is found:…”

Section: Introductionmentioning

confidence: 99%

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Sum rules for CP asymmetries of charmed baryon decays in the $$SU(3)_F$$ limit

Wang

2019

Eur. Phys. J. C

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Motivated by the recent LHCb observation of C P violation in charm, we study C P violation in the charmed baryon decays. A simple method to search for the C P violation relations in the flavor SU (3) limit, which is associated with a complete interchange of d and s quarks, is proposed. With this method, hundreds of C P violation sum rules in the doubly and singly charmed baryon decays can be found. As examples, the C P violation sum rules in twobody charmed baryon decays are presented. Some of the C P violation sum rules could help the experiment to find better observables. As byproducts, the branching fraction of + c → pK − π + is predicted to be (1.7 ± 0.5)% in the Uspin limit and the fragmentation-fraction ratio is determined to be f b / f b = 0.065 ± 0.020 using the LHCb data.

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“…For further recent theoretical work on charm CP violation see Refs. [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51].…”

Section: Introductionmentioning

confidence: 99%

The emergence of the ΔU = 0 rule in charm physics

Grossman

Schacht

2019

J. High Energ. Phys.

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We discuss the implications of the recent discovery of CP violation in two-body SCS D decays by LHCb. We show that the result can be explained within the SM without the need for any large SU (3) breaking effects. It further enables the determination of the imaginary part of the ratio of the ∆U = 0 over ∆U = 1 matrix elements in charm decays, which we find to be (0.65 ± 0.12). Within the standard model, the result proves the non-perturbative nature of the penguin contraction of tree operators in charm decays, similar to the known non-perturbative enhancement of ∆I = 1/2 over ∆I = 3/2 matrix elements in kaon decays, that is, the ∆I = 1/2 rule. As a guideline for future measurements, we show how to completely solve the most general parametrization of the D → P + P − system. *

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U -spin sum rules for CP asymmetries of three-body charmed baryon decays

Cited by 34 publications

References 77 publications

Up-down asymmetries of charmed baryon three-body decays

Up-down asymmetries of charmed baryon three-body decays

Sum rules for CP asymmetries of charmed baryon decays in the $$SU(3)_F$$ limit

The emergence of the ΔU = 0 rule in charm physics

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