Violation of partial conservation of the axial-vector current and two-body baryonic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>D</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math>decays

Hsiao, Y. K.; Geng, C. Q.

doi:10.1103/physrevd.91.077501

Cited by 21 publications

(21 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[5,6] but is in tension with calculations based on QCD sum rules [4] and calculations based on factorisation with the hypothesis of the violation of partial conservation of the axial-vector current at the GeV scale [7]. It helps shed light on an area of hadronic physics in which experimental input is needed, namely the study of the mechanisms responsible for decays of B mesons to baryonic final states.…”

Section: Jhep04(2017)162mentioning

confidence: 99%

“…Calculations based on QCD sum rules [4] predict a branching fraction smaller than 3 × 10 −6 whereas a pole model [5] and a recent study [6], taking into account the LHCb experimental result on the B 0 → pp branching fraction [3], both predict a branching fraction around 2 × 10 −7 . The violation of partial conservation of the axial-vector current at the GeV scale has been proposed as an alternative approach to the understanding of the data available on two-body baryonic decays of B and D + s mesons [7]. It explains the LHCb results on the B 0 (s) → pp decay modes [3] and predicts a branching fraction for the B + → pΛ decay of the order of 10 −8 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evidence for the two-body charmless baryonic decay B + → p Λ ¯ $$ {B}^{+}\to p\overline{\varLambda} $$

Aaij

Adeva

Adinolfi

et al. 2017

J. High Energ. Phys.

View full text Add to dashboard Cite

A search for the rare two-body charmless baryonic decay B + → pΛ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb −1 , collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B + → pΛ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B + → K 0 S π + decay for normalisation, iswhere the first uncertainty is statistical and the second systematic.

show abstract

Section: Jhep04(2017)162mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evidence for the two-body charmless baryonic decay B + → p Λ ¯ $$ {B}^{+}\to p\overline{\varLambda} $$

Aaij

Adeva

Adinolfi

et al. 2017

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…Since twobody baryonic B decays are suppressed with respect to decays to multi-body final states [4,5], the three-body decay B 0 s → pΛ K − is a good candidate for a search for baryonic B 0 s decays. The branching fraction has been predicted to be of the order of 10 −6 [6], the same as for its similar mode B 0 → pΛ π − .…”

Section: First Observation Of a Baryonic B 0 S Decaymentioning

confidence: 99%

“…In particular, further studies of the B 0 s decays are welcome. So far, their phenonenology has focused on two-body final states [4,15] and charmed baryonic decays [16].…”

Section: Pos(ckm2016)104mentioning

confidence: 99%

See 1 more Smart Citation

Results from LHCb in charmless baryonic $B$ meson decays

Rodrigues¹

2017

Proceedings of 9th International Workshop on the CKM Unitarity Triangle — PoS(CKM2016)

View full text Add to dashboard Cite

show abstract

Study of two-body doubly charmful baryonic B decays with SU(3) flavor symmetry

Hsiao

2023

J. High Energ. Phys.

View full text Add to dashboard Cite

Within the framework of SU(3) flavor symmetry, we investigate two-body doubly charmful baryonic $$ B\to {\textbf{B}}_c{\overline{\textbf{B}}}_c^{\prime } $$ B → B c B ¯ c ′ decays, where $$ {\textbf{B}}_c{\overline{\textbf{B}}}_c^{\prime } $$ B c B ¯ c ′ represents the anti-triplet charmed dibaryon. We determine the SU(3)f amplitudes and calculate $$ \mathcal{B}\left({B}^{-}\to {\Xi}_c^0{\overline{\Xi}}_c^{-}\right)=\left({3.4}_{-0.9}^{+1.0}\right)\times {10}^{-5} $$ B B − → Ξ c 0 Ξ ¯ c − = 3.4 − 0.9 + 1.0 × 10 − 5 and $$ \mathcal{B}\left({\overline{B}}_s^0\to {\Lambda}_c^{+}{\overline{\Xi}}_c^{-}\right)=\left({3.9}_{-1.0}^{+1.2}\right)\times {10}^{-5} $$ B B ¯ s 0 → Λ c + Ξ ¯ c − = 3.9 − 1.0 + 1.2 × 10 − 5 induced by the single W-emission configuration. We find that the W-exchange amplitude, previously neglected in studies, needs to be taken into account. It can cause a destructive interfering effect with the W-emission amplitude, alleviating the significant discrepancy between the theoretical estimation and experimental data for $$ \mathcal{B}\left({\overline{B}}^0\to {\Lambda}_c^{+}{\overline{\Lambda}}_c^{-}\right) $$ B B ¯ 0 → Λ c + Λ ¯ c − . To test other interfering decay channels, we calculate $$ \mathcal{B}\left({\overline{B}}_s^0\to {\Xi}_c^{0\left(+\right)}{\overline{\Xi}}_c^{0\left(+\right)}\right)=\left({3.0}_{-1.1}^{+1.4}\right)\times {10}^{-4} $$ B B ¯ s 0 → Ξ c 0 + Ξ ¯ c 0 + = 3.0 − 1.1 + 1.4 × 10 − 4 and $$ \mathcal{B}\left({\overline{B}}^0\to {\Xi}_c^0{\overline{\Xi}}_c^0\right)=\left({1.5}_{-0.6}^{+0.7}\right)\times {10}^{-5} $$ B B ¯ 0 → Ξ c 0 Ξ ¯ c 0 = 1.5 − 0.6 + 0.7 × 10 − 5 . We estimate non-zero branching fractions for the pure W-exchange decay channels, specifically $$ \mathcal{B}\left({\overline{B}}_s^0\to {\Lambda}_c^{+}{\overline{\Lambda}}_c^{-}\right)=\left({8.1}_{-1.5}^{+1.7}\right)\times {10}^{-5} $$ B B ¯ s 0 → Λ c + Λ ¯ c − = 8.1 − 1.5 + 1.7 × 10 − 5 and $$ \mathcal{B}\left({\overline{B}}^0\to {\Xi}_c^{+}{\overline{\Xi}}_c^{-}\right)=\left(3.0\pm 0.6\right)\times {10}^{-6} $$ B B ¯ 0 → Ξ c + Ξ ¯ c − = 3.0 ± 0.6 × 10 − 6 . Additionally, we predict $$ \mathcal{B}\left({B}_c^{+}\to {\Xi}_c^{+}{\overline{\Xi}}_c^0\right)=\left({2.8}_{-0.7}^{+0.9}\right)\times {10}^{-4} $$ B B c + → Ξ c + Ξ ¯ c 0 = 2.8 − 0.7 + 0.9 × 10 − 4 and $$ \mathcal{B}\left({B}_c^{+}\to {\Lambda}_c^{+}{\overline{\Xi}}_c^0\right)=\left({1.6}_{-0.4}^{+0.5}\right)\times {10}^{-5} $$ B B c + → Λ c + Ξ ¯ c 0 = 1.6 − 0.4 + 0.5 × 10 − 5 , which are accessible to experimental facilities such as LHCb.

show abstract

Violation of partial conservation of the axial-vector current and two-body baryonicBandDsdecays

Cited by 21 publications

References 38 publications

Evidence for the two-body charmless baryonic decay B + → p Λ ¯ $$ {B}^{+}\to p\overline{\varLambda} $$

Evidence for the two-body charmless baryonic decay B + → p Λ ¯ $$ {B}^{+}\to p\overline{\varLambda} $$

Results from LHCb in charmless baryonic $B$ meson decays

Study of two-body doubly charmful baryonic B decays with SU(3) flavor symmetry

Contact Info

Product

Resources

About