Search for CP violation using T-odd correlations in D0→K+K−π+π− decays

LHCb Collaboration; Matthew P Coombes; Sophie E Richards; Daniel Saunders; Nicola A Skidmore; Daniel Souza Covacich; Jaap J Velthuis; David K Voong

doi:10.1007/JHEP10(2014)005

Search for CP violation using T-odd correlations in D0→K+K−π+π− decays

LHCb Collaboration, Matthew P Coombes, Sophie E Richards, Daniel Saunders, Nicola A Skidmore, Daniel Souza Covacich, Jaap J Velthuis, David K Voong

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Abstract

A search for CP violation using T-odd correlations is performed using the four-body D⁰ → K⁺K⁻π⁺π⁻ decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities of 1.0 fb⁻¹ and 2.0 fb⁻¹ recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. The CP -violating asymmetry a_CP^{T ‐ odd} is measured to be (0.18 ± 0.29 (stat) ± 0.04 (syst))%. Searches for CP violation in different regions of phase space of the four-body decay, and as a function of the D⁰ decay time, are also presented. No significant deviation from the CP conservation hypothesis is found

Original language	English
Article number	5
Number of pages	21
Journal	Journal of High Energy Physics
Volume	1410
Issue number	5
Early online date	1 Oct 2014
DOIs	https://doi.org/10.1007/JHEP10(2014)005
Publication status	Published - Oct 2014

Keywords

CP violation
Charm physics
Hadron-Hadron Scattering
Flavor physics

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GridPP Hardware Allocation 2013
Flaecher, H. U.
1/01/14 → 1/04/14
Project: Research
Consolidated Grant 2012-16
Newbold, D. M. & Rademacker, J. H.
1/10/12 → 1/10/16
Project: Research

Professor Jonas H Rademacker
- Jonas.Rademackerbristol.acuk
- School of Physics - Professor of Physics
Person: Academic

Cite this

@article{0772b43ccbdf4a81845ca949cdf39c08,

title = "Search for CP violation using T-odd correlations in D0→K+K−π+π− decays",

abstract = "A search for CP violation using T-odd correlations is performed using the four-body D0 → K+K−π+π− decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities of 1.0 fb−1 and 2.0 fb−1 recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. The CP -violating asymmetry aCPT ‐ odd is measured to be (0.18 ± 0.29 (stat) ± 0.04 (syst))%. Searches for CP violation in different regions of phase space of the four-body decay, and as a function of the D0 decay time, are also presented. No significant deviation from the CP conservation hypothesis is found",

keywords = "CP violation, Charm physics, Hadron-Hadron Scattering, Flavor physics",

author = "{LHCb Collaboration} and Marco Adinolfi and Benton, {John O} and Brook, {Nick H} and Cook, {Andrew D} and Coombes, {Matthew P} and Dalseno, {Jeremy P} and Hampson, {Tom R} and Harnew, {Sam T} and Naik, {Paras P} and Price, {Eugenia P} and Claire Prouve and Jonas Rademacker and Richards, {Sophie E} and Daniel Saunders and Skidmore, {Nicola A} and {Souza Covacich}, Daniel and Velthuis, {Jaap J} and Voong, {David K}",

year = "2014",

month = oct,

doi = "10.1007/JHEP10(2014)005",

language = "English",

volume = "1410",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "5",

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TY - JOUR

T1 - Search for CP violation using T-odd correlations in D0→K+K−π+π− decays

AU - LHCb Collaboration

AU - Adinolfi, Marco

AU - Benton, John O

AU - Brook, Nick H

AU - Cook, Andrew D

AU - Coombes, Matthew P

AU - Dalseno, Jeremy P

AU - Hampson, Tom R

AU - Harnew, Sam T

AU - Naik, Paras P

AU - Price, Eugenia P

AU - Prouve, Claire

AU - Rademacker, Jonas

AU - Richards, Sophie E

AU - Saunders, Daniel

AU - Skidmore, Nicola A

AU - Souza Covacich, Daniel

AU - Velthuis, Jaap J

AU - Voong, David K

PY - 2014/10

Y1 - 2014/10

N2 - A search for CP violation using T-odd correlations is performed using the four-body D0 → K+K−π+π− decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities of 1.0 fb−1 and 2.0 fb−1 recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. The CP -violating asymmetry aCPT ‐ odd is measured to be (0.18 ± 0.29 (stat) ± 0.04 (syst))%. Searches for CP violation in different regions of phase space of the four-body decay, and as a function of the D0 decay time, are also presented. No significant deviation from the CP conservation hypothesis is found

AB - A search for CP violation using T-odd correlations is performed using the four-body D0 → K+K−π+π− decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities of 1.0 fb−1 and 2.0 fb−1 recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. The CP -violating asymmetry aCPT ‐ odd is measured to be (0.18 ± 0.29 (stat) ± 0.04 (syst))%. Searches for CP violation in different regions of phase space of the four-body decay, and as a function of the D0 decay time, are also presented. No significant deviation from the CP conservation hypothesis is found

KW - CP violation

KW - Charm physics

KW - Hadron-Hadron Scattering

KW - Flavor physics

U2 - 10.1007/JHEP10(2014)005

DO - 10.1007/JHEP10(2014)005

M3 - Article (Academic Journal)

VL - 1410

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 5

M1 - 5

ER -

Search for CP violation using T-odd correlations in D0→K+K−π+π− decays

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GridPP Hardware Allocation 2013

Consolidated Grant 2012-16

Profiles

Professor Jonas H Rademacker

Cite this