Study of the CKM angle γ sensitivity using flavor untagged 
					
	    
	    
	   decays *

Ao, D.; Décamp, D.; Qian, W.; Ricciardi, S.; Sazak, Halime; T’Jampens, S.; Tisserand, V.; Wang, Zhecheng; Yang, Zheng; Zhang, S. N.; Zhou, X. K.

doi:10.1088/1674-1137/abd16d

Cited by 7 publications

(6 citation statements)

References 58 publications

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“…These results are consistent with, and supersede, the previous LHCb measurements [14], which only used the Run 1 data. These decay modes, measured here with improved accuracy, can be employed to measure the CKM angle γ [26]. The measured value of f L (B 0 s → D * 0 ϕ) is smaller than the previous measurement [14].…”

Section: Jhep10(2023)123mentioning

confidence: 73%

“…However, from ref. [26], the B 0 s → D * 0 ϕ modes contribute about 10%-25% on the precision of γ. As a result, the expected γ sensitivity is similar to that given in ref.…”

Section: Jhep10(2023)123mentioning

confidence: 97%

“…The potential sensitivity of these decays to γ was studied in ref. [26], which showed that a precision of about 8 • to 19 • is achievable, by using the full dataset collected by the LHCb collaboration.…”

Section: Introductionmentioning

confidence: 99%

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Evidence for the decays B0 → $$ \overline{D} $$()0ϕ and updated measurements of the branching fractions of the $$ {B}_s^0 $$ → $$ \overline{D} $$()0ϕ decays

Aaij,

Abdelmotteleb,

Abellan Beteta

et al. 2023

J. High Energ. Phys.

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Evidence for the decays B0→$$ \overline{D} $$ D ¯ 0ϕ and B0→$$ \overline{D} $$ D ¯ *0ϕ is reported with a significance of 3.6 σ and 4.3 σ, respectively. The analysis employs pp collision data at centre-of-mass energies $$ \sqrt{s} $$ s = 7, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 fb−1. The branching fractions are measured to be$$ {\displaystyle \begin{array}{l}\mathcal{B}\left({B}^0\to {\overline{D}}^0\phi \right)=\left(7.7\pm 2.1\pm 0.7\pm 0.7\right)\times {10}^{-7},\\ {}\mathcal{B}\left({B}^0\to {\overline{D}}^{\ast 0}\phi \right)=\left(2.2\pm 0.5\pm 0.2\pm 0.2\right)\times {10}^{-6}.\end{array}} $$ B B 0 → D ¯ 0 ϕ = 7.7 ± 2.1 ± 0.7 ± 0.7 × 10 − 7 , B B 0 → D ¯ ∗ 0 ϕ = 2.2 ± 0.5 ± 0.2 ± 0.2 × 10 − 6 . In these results, the first uncertainty is statistical, the second systematic, and the third is related to the branching fraction of the B0→$$ \overline{D} $$ D ¯ 0K+K− decay, used for normalisation. By combining the branching fractions of the decays B0 → $$ {\overline{D}}^{\left(\ast \right)0}\phi $$ D ¯ ∗ 0 ϕ and B0 → $$ {\overline{D}}^{\left(\ast \right)0}\omega $$ D ¯ ∗ 0 ω , the ω-ϕ mixing angle δ is constrained to be tan2δ = (3.6 ± 0.7 ± 0.4) × 10−3, where the first uncertainty is statistical and the second systematic. An updated measurement of the branching fractions of the $$ {B}_s^0 $$ B s 0 → $$ {\overline{D}}^{\left(\ast \right)0}\phi $$ D ¯ ∗ 0 ϕ decays, which can be used to determine the CKM angle γ, leads to$$ {\displaystyle \begin{array}{c}\mathcal{B}\left({B}_s^0\to {\overline{D}}^0\phi \right)=\left(2.30\pm 0.10\pm 0.11\pm 0.20\right)\times {10}^{-5},\\ {}\mathcal{B}\left({B}_s^0\to {\overline{D}}^{\ast 0}\phi \right)=\left(3.17\pm 0.16\pm 0.17\pm 0.27\right)\times {10}^{-5}.\end{array}} $$ B B s 0 → D ¯ 0 ϕ = 2.30 ± 0.10 ± 0.11 ± 0.20 × 10 − 5 , B B s 0 → D ¯ ∗ 0 ϕ = 3.17 ± 0.16 ± 0.17 ± 0.27 × 10 − 5 .

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Section: Jhep10(2023)123mentioning

confidence: 73%

“…However, from ref. [26], the B 0 s → D * 0 ϕ modes contribute about 10%-25% on the precision of γ. As a result, the expected γ sensitivity is similar to that given in ref.…”

Section: Jhep10(2023)123mentioning

confidence: 97%

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Evidence for the decays B0 → $$ \overline{D} $$()0ϕ and updated measurements of the branching fractions of the $$ {B}_s^0 $$ → $$ \overline{D} $$()0ϕ decays

Aaij,

Abdelmotteleb,

Abellan Beteta

et al. 2023

J. High Energ. Phys.

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“…The 𝐷 0 meson is reconstructed in its decay to 𝐾 + 𝜋 − and the 𝐷 * 0 is partially reconstructed as a 𝐷 0 . Branching and polarisation fractions ( 𝑓 𝐿 ) of 𝐵 0 𝑠 → 𝐷 ( * )0 𝜙 decays (Figure 3, right) are also measured; future measurements of the untagged 𝐶𝑃 violation of these decays could be used to determine the Cabbibo-Kobayashi-Maskawa (CKM) phase 𝛾 [7].…”

Section: 𝜙 Decaysmentioning

confidence: 99%

CP violation and branching fraction measurements in B decays to open charm final states

Bishop

2024

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)

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The latest measurements of charge-parity violation and branching fractions in beauty hadron decays to open charm final states using data collected by the LHCb detector in 2011-18 are reviewed. These results help to constrain theories beyond the Standard Model of particle physics, and improve our understanding of QCD dynamics in beauty hadron decays including rescattering effects and factorisation.

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“…Sensitivity studies with B 0 s → Dφ using a time-integrated method has also been performed [758], the expected statistical sensitivity of γ is about (8 − 19) • using the 9 fb −1 pp collision data collected by the LHCb experiment. It points out that additional sensitivity on γ can be achieved using the longitudinal polarized part of B 0 s → D * φ decays with a partially reconstructed technique [756].…”

Section: Time-dependent B 0 S Decaysmentioning

confidence: 99%

Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review

Chen¹,

Li²,

Qian³

et al. 2021

Preprint

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Heavy flavour physics provides excellent opportunities to indirectly search for new physics at very high energy scales and to study hadron properties for deep understanding of the strong interaction. The LHCb experiment has been playing a leading role in the study of heavy flavour physics since the start of the LHC operations about ten years ago, and made a range of high-precision measurements and unexpected discoveries, which may have far-reaching implications on the field of particle physics. This review highlights a selection of the most influential physics results on CP violation, rare decays, and heavy flavour production and spectroscopy obtained by LHCb using the data collected during the first two operation periods of the LHC. The upgrade plan of LHCb and the physics prospects are also briefly discussed.

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Study of the CKM angle γ sensitivity using flavor untagged decays *

Abstract: A sensitivity study on the measurement of the CKM angle from decays is conducted using the D-meson reconstructed in the quasi flavour-specific modes , , and , as well a… Show more

Cited by 7 publications

References 58 publications

Evidence for the decays B0 → $$ \overline{D} $$()0ϕ and updated measurements of the branching fractions of the $$ {B}_s^0 $$ → $$ \overline{D} $$()0ϕ decays

Evidence for the decays B0 → $$ \overline{D} $$()0ϕ and updated measurements of the branching fractions of the $$ {B}_s^0 $$ → $$ \overline{D} $$()0ϕ decays

CP violation and branching fraction measurements in B decays to open charm final states

Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review

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Study of the CKM angle γ sensitivity using flavor untagged decays *

Abstract: A sensitivity study on the measurement of the CKM angle from decays is conducted using the D-meson reconstructed in the quasi flavour-specific modes , , and , as well a… Show more

Cited by 7 publications

References 58 publications

Evidence for the decays B0 → $$ \overline{D} $$(*)0ϕ and updated measurements of the branching fractions of the $$ {B}_s^0 $$ → $$ \overline{D} $$(*)0ϕ decays

Evidence for the decays B0 → $$ \overline{D} $$(*)0ϕ and updated measurements of the branching fractions of the $$ {B}_s^0 $$ → $$ \overline{D} $$(*)0ϕ decays

CP violation and branching fraction measurements in B decays to open charm final states

Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review

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Product

Resources

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Evidence for the decays B0 → $$ \overline{D} $$()0ϕ and updated measurements of the branching fractions of the $$ {B}_s^0 $$ → $$ \overline{D} $$()0ϕ decays

Evidence for the decays B0 → $$ \overline{D} $$()0ϕ and updated measurements of the branching fractions of the $$ {B}_s^0 $$ → $$ \overline{D} $$()0ϕ decays