Model-independent measurement of charm mixing parameters in ¯B→D0(→K0Sπ+π−)μ−¯νμX decays

LHCb collaboration; R.H. O'Neil; M. Richardson-Slipper; C. Vrahas

doi:10.1103/PhysRevD.108.052005

Model-independent measurement of charm mixing parameters in ¯B→D0(→K0Sπ+π−)μ−¯νμX decays

LHCb collaboration, R.H. O'Neil, M. Richardson-Slipper, C. Vrahas

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

A measurement of charm mixing and CP-violating parameters is reported, using ¯B→D0(→K0Sπ+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(→K0Sπ+π−)π+ decays is reported.

Original language	English
Article number	052005
Pages (from-to)	1-17
Number of pages	17
Journal	Physical Review D
Volume	108
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.108.052005
Publication status	Published - 6 Sept 2023

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http://arxiv.org/abs/2208.06512

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Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/04/23 → 30/09/25
Project: Research
Next generation photodetectors for future applications
Oliva, F. (Principal Investigator)
1/12/22 → 30/11/25
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/10/22 → 30/09/25
Project: Research

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@article{02ff1aada5aa4ed382bb7a64a5a47afe,

title = "Model-independent measurement of charm mixing parameters in ¯B→D0(→K0Sπ+π−)μ−¯νμX decays",

abstract = "A measurement of charm mixing and CP-violating parameters is reported, using ¯B→D0(→K0Sπ+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(→K0Sπ+π−)π+ decays is reported.",

author = "{LHCb collaboration} and William Barter and P.E.L. Clarke and S. Gambetta and F. Muheim and M. Needham and Mark Williams and Federico Betti and Robert Currie and S. Eisenhardt and Lavra, {Lais Soares} and Oliva Federica and Ozlem Ozcelik and Gediminas Sarpis and R.H. O'Neil and M. Richardson-Slipper and C. Vrahas",

year = "2023",

month = sep,

day = "6",

doi = "10.1103/PhysRevD.108.052005",

language = "English",

volume = "108",

pages = "1--17",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Model-independent measurement of charm mixing parameters in ¯B→D0(→K0Sπ+π−)μ−¯νμX decays

AU - LHCb collaboration

AU - Barter, William

AU - Clarke, P.E.L.

AU - Gambetta, S.

AU - Muheim, F.

AU - Needham, M.

AU - Williams, Mark

AU - Betti, Federico

AU - Currie, Robert

AU - Eisenhardt, S.

AU - Lavra, Lais Soares

AU - Federica, Oliva

AU - Ozcelik, Ozlem

AU - Sarpis, Gediminas

AU - O'Neil, R.H.

AU - Richardson-Slipper, M.

AU - Vrahas, C.

PY - 2023/9/6

Y1 - 2023/9/6

N2 - A measurement of charm mixing and CP-violating parameters is reported, using ¯B→D0(→K0Sπ+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(→K0Sπ+π−)π+ decays is reported.

AB - A measurement of charm mixing and CP-violating parameters is reported, using ¯B→D0(→K0Sπ+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(→K0Sπ+π−)π+ decays is reported.

U2 - 10.1103/PhysRevD.108.052005

DO - 10.1103/PhysRevD.108.052005

M3 - Article

SN - 2470-0010

VL - 108

SP - 1

EP - 17

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 052005

ER -

Model-independent measurement of charm mixing parameters in ¯B→D0(→K0Sπ+π−)μ−¯νμX decays

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Experimental Particle Physics at the University of Edinburgh

Next generation photodetectors for future applications

Experimental Particle Physics at the University of Edinburgh

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