Angular Analysis of the B + → K * + μ + μ −  Decay

K. De Bruyn; C. J. G. Onderwater; M. van Veghel; LHCb Collaboration

doi:10.1103/PhysRevLett.126.161802

Angular Analysis of the B + → K * + μ + μ − Decay

K. De Bruyn, C. J. G. Onderwater, M. van Veghel, LHCb Collaboration

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Abstract

We present an angular analysis of the B+ -> K*(+)(-> K-S(0)pi(+))mu(+) mu(-) decay using 9 fb(-1) of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B-0 -> K*(0)mu(+)mu(-) decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.

Original language	English
Article number	161802
Number of pages	11
Journal	Physical Review Letters
Volume	126
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.126.161802
Publication status	Published - 22-Apr-2021

Keywords

PHYSICS
TRANSITIONS
PARTICLE
PLUS

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title = "Angular Analysis of the B + → K * + μ + μ − Decay",

abstract = "We present an angular analysis of the B+ -> K*(+)(-> K-S(0)pi(+))mu(+) mu(-) decay using 9 fb(-1) of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B-0 -> K*(0)mu(+)mu(-) decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.",

keywords = "PHYSICS, TRANSITIONS, PARTICLE, PLUS",

author = "R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and {De Bruyn}, K. and L. Dufour and M Mulder and Onderwater, {C. J. G.} and A. Pellegrino and S. Tolk and {van Veghel}, M. and {LHCb Collaboration}",

year = "2021",

month = apr,

day = "22",

doi = "10.1103/PhysRevLett.126.161802",

language = "English",

volume = "126",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "AMER PHYSICAL SOC",

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TY - JOUR

T1 - Angular Analysis of the B + → K * + μ + μ − Decay

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - De Bruyn, K.

AU - Dufour, L.

AU - Mulder, M

AU - Onderwater, C. J. G.

AU - Pellegrino, A.

AU - Tolk, S.

AU - van Veghel, M.

AU - LHCb Collaboration

PY - 2021/4/22

Y1 - 2021/4/22

N2 - We present an angular analysis of the B+ -> K*(+)(-> K-S(0)pi(+))mu(+) mu(-) decay using 9 fb(-1) of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B-0 -> K*(0)mu(+)mu(-) decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.

AB - We present an angular analysis of the B+ -> K*(+)(-> K-S(0)pi(+))mu(+) mu(-) decay using 9 fb(-1) of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B-0 -> K*(0)mu(+)mu(-) decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.

KW - PHYSICS

KW - TRANSITIONS

KW - PARTICLE

KW - PLUS

U2 - 10.1103/PhysRevLett.126.161802

DO - 10.1103/PhysRevLett.126.161802

M3 - Article

SN - 0031-9007

VL - 126

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 161802

ER -