Model-independent measurement of charm mixing parameters in B ¯ ? D 0 ( ? K S 0 p + p - ) µ - ? ¯ µ X decays

Model-independent measurement of charm mixing parameters in B ¯ ? D 0 ( ? K S 0 p + p - ) µ - ? ¯ µ X decays
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B 中魅力混合参数的模型独立测量?

DOI:
10.1103/physrevd.108.052005
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发表时间:
2023
期刊:
影响因子:
5
通讯作者:
Aaij R
Aaij R
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Aaij R

文献摘要

相似文献

本文利用2016 ~ 2018年LHCb实验收集的质子-质子碰撞中重构的B→D0(→KS0π+ π-) _ μ νμ x衰变,测量了粲数混合和cp违反参数,对应的综合光度为5.4 lb -1。测量的混合和cp违反参数为xCP=[4.29±1.48 (stat)±0.26 (syst)]× 10-3, yCP=[12.61±3.12 (stat)±0.83 (syst)]× 10-3, Δx=[-0.77±0.93 (stat)±0.28 (syst)]× 10-3, Δy=[3.01±1.92 (stat)±0.26 (syst)]× 10-3。所得结果与以往的测量结果相辅相成、相一致。结合最近的LHCb分析,报道了D * +→D0(→KS0π+ π-) π+衰变。
A measurement of charm mixing and CP-violating parameters is reported, using B→ D0 (→ KS0π+ π-)⁢ μ-νμX decays reconstructed in proton-proton collisions collected by the LHCb experiment during the years 2016 to 2018, corresponding to an integrated luminosity of 5.4 fb-1. The measured mixing and CP-violating parameters are xCP=[4.29±1.48 (stat)±0.26 (syst)]× 10-3, yCP=[12.61±3.12 (stat)±0.83 (syst)]× 10-3, Δx=[-0.77±0.93 (stat)±0.28 (syst)]× 10-3, Δy=[3.01±1.92 (stat)±0.26 (syst)]× 10-3. The results are complementary to and consistent with previous measurements. A combination with the recent LHCb analysis of D∗+→ D0 (→ KS0π+ π-) π+ decays is reported.