Measurement of the phase difference between short- and long-distance amplitudes in the B+→ K+µ+µ− decay

LHCb Collaboration; R Aaij; Marco Adinolfi; Emma Buchanan; Andrew Cook; Jeremy Dalseno; Sam Harnew; James Kariuki; Paras Naik; Konstantinos Petridis; Gabriela Pomery; Eugenia Price; Claire Prouve; Renato Quagliani; Jonas Rademacker; Sophie Richards; Daniel Saunders; Nicola Skidmore; Jaap Velthuis

doi:10.1140/epjc/s10052-017-4703-2

Measurement of the phase difference between short- and long-distance amplitudes in the B+→ K+µ+µ− decay

LHCb Collaboration, R Aaij, Marco Adinolfi, Emma Buchanan, Andrew Cook, Jeremy Dalseno, Sam Harnew, James Kariuki, Paras Naik, Konstantinos Petridis, Gabriela Pomery, Eugenia Price, Claire Prouve, Renato Quagliani, Jonas Rademacker, Sophie Richards, Daniel Saunders, Nicola Skidmore, Jaap Velthuis

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Abstract

A measurement of the phase difference between
the short- and long-distance contributions to the B+ →
K +μ+μ− decay is performed by analysing the dimuon mass
distribution. The analysis is based on pp collision data corresponding
to an integrated luminosity of 3 fb−1 collected by
the LHCb experiment in 2011 and 2012. The long-distance
contribution to the B+ → K +μ+μ− decay is modelled as
a sum of relativistic Breit–Wigner amplitudes representing
different vector meson resonances decaying to muon pairs,
each with their own magnitude and phase. The measured
phases of the J/ψ and ψ(2S) resonances are such that the
interference with the short-distance component in dimuon
mass regions far from their pole masses is small. In addition,
constraints are placed on the Wilson coefficients, C9 and C10,
and the branching fraction of the short-distance component
is measured.

Original language	English
Journal	European Physical Journal C: Particles and Fields
Volume	77
Issue number	161
DOIs	https://doi.org/10.1140/epjc/s10052-017-4703-2
Publication status	Published - 16 Mar 2017

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Bristol Consolidated Grant 2015-9
Goldstein, J.
1/10/15 → 31/03/21
Project: Research

Dr Konstantinos A. Petridis
- konstantinos.petridisbristol.acuk
- School of Physics - Senior Lecturer
Person: Academic

Cite this

LHCb Collaboration, Aaij, R., Adinolfi, M., Buchanan, E., Cook, A., Dalseno, J., Harnew, S., Kariuki, J., Naik, P., Petridis, K., Pomery, G., Price, E., Prouve, C., Quagliani, R., Rademacker, J., Richards, S., Saunders, D., Skidmore, N., & Velthuis, J. (2017). Measurement of the phase difference between short- and long-distance amplitudes in the B+→ K+µ+µ− decay. European Physical Journal C: Particles and Fields, 77(161). https://doi.org/10.1140/epjc/s10052-017-4703-2

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title = "Measurement of the phase difference between short- and long-distance amplitudes in the B+→ K+µ+µ− decay",

abstract = "A measurement of the phase difference betweenthe short- and long-distance contributions to the B+ →K +μ+μ− decay is performed by analysing the dimuon massdistribution. The analysis is based on pp collision data correspondingto an integrated luminosity of 3 fb−1 collected bythe LHCb experiment in 2011 and 2012. The long-distancecontribution to the B+ → K +μ+μ− decay is modelled asa sum of relativistic Breit–Wigner amplitudes representingdifferent vector meson resonances decaying to muon pairs,each with their own magnitude and phase. The measuredphases of the J/ψ and ψ(2S) resonances are such that theinterference with the short-distance component in dimuonmass regions far from their pole masses is small. In addition,constraints are placed on the Wilson coefficients, C9 and C10,and the branching fraction of the short-distance componentis measured.",

author = "{LHCb Collaboration} and R Aaij and Marco Adinolfi and Emma Buchanan and Andrew Cook and Jeremy Dalseno and Sam Harnew and James Kariuki and Paras Naik and Konstantinos Petridis and Gabriela Pomery and Eugenia Price and Claire Prouve and Renato Quagliani and Jonas Rademacker and Sophie Richards and Daniel Saunders and Nicola Skidmore and Jaap Velthuis",

year = "2017",

month = mar,

day = "16",

doi = "10.1140/epjc/s10052-017-4703-2",

language = "English",

volume = "77",

journal = "European Physical Journal C: Particles and Fields",

issn = "1434-6044",

publisher = "Springer Berlin Heidelberg",

number = "161",

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LHCb Collaboration, Aaij, R, Adinolfi, M, Buchanan, E, Cook, A, Dalseno, J, Harnew, S, Kariuki, J, Naik, P, Petridis, K, Pomery, G, Price, E, Prouve, C, Quagliani, R, Rademacker, J, Richards, S, Saunders, D, Skidmore, N & Velthuis, J 2017, 'Measurement of the phase difference between short- and long-distance amplitudes in the B+→ K+µ+µ− decay', European Physical Journal C: Particles and Fields, vol. 77, no. 161. https://doi.org/10.1140/epjc/s10052-017-4703-2

TY - JOUR

T1 - Measurement of the phase difference between short- and long-distance amplitudes in the B+→ K+µ+µ− decay

AU - LHCb Collaboration

AU - Aaij, R

AU - Adinolfi, Marco

AU - Buchanan, Emma

AU - Cook, Andrew

AU - Dalseno, Jeremy

AU - Harnew, Sam

AU - Kariuki, James

AU - Naik, Paras

AU - Petridis, Konstantinos

AU - Pomery, Gabriela

AU - Price, Eugenia

AU - Prouve, Claire

AU - Quagliani, Renato

AU - Rademacker, Jonas

AU - Richards, Sophie

AU - Saunders, Daniel

AU - Skidmore, Nicola

AU - Velthuis, Jaap

PY - 2017/3/16

Y1 - 2017/3/16

N2 - A measurement of the phase difference betweenthe short- and long-distance contributions to the B+ →K +μ+μ− decay is performed by analysing the dimuon massdistribution. The analysis is based on pp collision data correspondingto an integrated luminosity of 3 fb−1 collected bythe LHCb experiment in 2011 and 2012. The long-distancecontribution to the B+ → K +μ+μ− decay is modelled asa sum of relativistic Breit–Wigner amplitudes representingdifferent vector meson resonances decaying to muon pairs,each with their own magnitude and phase. The measuredphases of the J/ψ and ψ(2S) resonances are such that theinterference with the short-distance component in dimuonmass regions far from their pole masses is small. In addition,constraints are placed on the Wilson coefficients, C9 and C10,and the branching fraction of the short-distance componentis measured.

AB - A measurement of the phase difference betweenthe short- and long-distance contributions to the B+ →K +μ+μ− decay is performed by analysing the dimuon massdistribution. The analysis is based on pp collision data correspondingto an integrated luminosity of 3 fb−1 collected bythe LHCb experiment in 2011 and 2012. The long-distancecontribution to the B+ → K +μ+μ− decay is modelled asa sum of relativistic Breit–Wigner amplitudes representingdifferent vector meson resonances decaying to muon pairs,each with their own magnitude and phase. The measuredphases of the J/ψ and ψ(2S) resonances are such that theinterference with the short-distance component in dimuonmass regions far from their pole masses is small. In addition,constraints are placed on the Wilson coefficients, C9 and C10,and the branching fraction of the short-distance componentis measured.

U2 - 10.1140/epjc/s10052-017-4703-2

DO - 10.1140/epjc/s10052-017-4703-2

M3 - Article (Academic Journal)

C2 - 28408857

SN - 1434-6044

VL - 77

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

IS - 161

ER -

Measurement of the phase difference between short- and long-distance amplitudes in the B+→ K+µ+µ− decay

Abstract

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Projects

Bristol Consolidated Grant 2015-9

Profiles

Dr Konstantinos A. Petridis

Cite this