Measurement of the D* longitudinal polarization in B0 →d*-τ+ντ decays

LHCb Collaboration

doi:10.1103/PhysRevD.110.092007

Measurement of the D^* longitudinal polarization in B0 →d^*-τ⁺ν_τ decays

LHCb Collaboration

Monash University
National Institute for Subatomic Physics
University of Warwick
University of Zurich
University of Liverpool
Instituto Galego de Física de Altas Enerxías (IGFAE)
University of Bristol
University of Glasgow
Uppsala University
Université Clermont Auvergne
CERN
Syracuse University
University of Michigan, Ann Arbor
University of Cincinnati
National Institute for Nuclear Physics
TU Dortmund University
University of Barcelona
University of Manchester
University of Cambridge
Sorbonne Université
Universidade Federal do Rio de Janeiro
Université Paris-Saclay
Peking University
University of Chinese Academy of Sciences
Consejo Nacional de Rectores (CONARE)
CPPM
Massachusetts Institute of Technology
Laboratoire Leprince-Ringuet
University of Oxford
Université Savoie Mont Blanc
Heidelberg University
Swiss Federal Institute of Technology Lausanne
Centro Brasileiro de Pesquisas Físicas
Pontifícia Universidade Católica do Rio de Janeiro
University of Edinburgh
RWTH Aachen University
CAS - Institute of High Energy Physics
Ramon Llull University
University of Padua
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Tsinghua University
Wuhan University
Imperial College London
Maastricht University
University of Maryland, College Park
South China Normal University
NASU - Institute of Nuclear Research
Horia Hulubei National Institute of Physics and Nuclear Engineering
Los Alamos National Laboratory
Central China Normal University
Hunan University
University of Groningen
Eötvös Loránd University
University College Dublin
Cracow University of Technology
Rutherford Appleton Laboratory
University of Bonn
AGH University of Krakow
National Centre for Nuclear Research
University of Valencia
Universidad Nacional de Colombia
University of Birmingham
NASU - Kharkov Institute of Physics and Technology
Vrije Universiteit Amsterdam
Lanzhou University
Departement de Physique Nucleaire (SPhN)
Max Planck Institute for Nuclear Physics

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

7 Citas (Scopus)

Resumen

The longitudinal polarization fraction of the D^* meson is measured in B⁰→D^*-τ⁺ν_τ decays, where the τ lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV and corresponding to an integrated luminosity of 5 fb-1. The D^* polarization fraction FLD^* is measured in two q2 regions, below and above 7 GeV2/c4, where q2 is defined as the squared invariant mass of the τντ system. The FLD∗ values are measured to be 0.52±0.07±0.04 and 0.34±0.08±0.02 for the lower and higher q2 regions, respectively. The first uncertainties are statistical and the second systematic. The average value over the whole q2 range is FLD∗=0.41±0.06±0.03. These results are compatible with the Standard Model predictions.

Idioma original	Inglés
Número de artículo	092007
Publicación	Physical Review D
Volumen	110
N.º	9
DOI	https://doi.org/10.1103/PhysRevD.110.092007
Estado	Publicada - 1 nov 2024
Publicado de forma externa	Sí

Acceder al documento

10.1103/PhysRevD.110.092007

Otros archivos y enlaces

Enlace a la publicación en Scopus

Citar esto

@article{b67a54596eaa4f9c9a96aa6cabc46b4f,

title = "Measurement of the D* longitudinal polarization in B0 →d*-τ+ντ decays",

abstract = "The longitudinal polarization fraction of the D* meson is measured in B0→D*-τ+ντ decays, where the τ lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV and corresponding to an integrated luminosity of 5 fb-1. The D* polarization fraction FLD* is measured in two q2 regions, below and above 7 GeV2/c4, where q2 is defined as the squared invariant mass of the τντ system. The FLD∗ values are measured to be 0.52±0.07±0.04 and 0.34±0.08±0.02 for the lower and higher q2 regions, respectively. The first uncertainties are statistical and the second systematic. The average value over the whole q2 range is FLD∗=0.41±0.06±0.03. These results are compatible with the Standard Model predictions.",

author = "\{LHCb Collaboration\} and Abellan Beteta and R. Aaij and Abdelmotteleb, \{A. S.W.\} and \{Abellan Beteta\}, C. and F. Abudin{\'e}n and T. Ackernley and B. Adeva and M. Adinolfi and P. Adlarson and H. Afsharnia and C. Agapopoulou and Aidala, \{C. A.\} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and Z. Aliouche and \{Alvarez Cartelle\}, P. and R. Amalric and S. Amato and Amey, \{J. L.\} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and P. Andreola and M. Andreotti and D. Andreou and D. Ao and F. Archilli and \{Arguedas Cuendis\}, S. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and D. Bacher and \{Bachiller Perea\}, I. and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and A. Bailly-Reyre and \{Baladron Rodriguez\}, P. and V. Balagura and \{Castro Godinez\}, J.",

note = "Publisher Copyright: {\textcopyright} 2024 CERN.",

year = "2024",

month = nov,

day = "1",

doi = "10.1103/PhysRevD.110.092007",

language = "Ingl{\'e}s",

volume = "110",

journal = "Physical Review D",

issn = "2470-0010",

number = "9",

}

TY - JOUR

T1 - Measurement of the D* longitudinal polarization in B0 →d*-τ+ντ decays

AU - LHCb Collaboration

AU - Beteta, Abellan

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellan Beteta, C.

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adlarson, P.

AU - Afsharnia, H.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Akiba, K.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alvarez Cartelle, P.

AU - Amalric, R.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andersson, M.

AU - Andreianov, A.

AU - Andreola, P.

AU - Andreotti, M.

AU - Andreou, D.

AU - Ao, D.

AU - Archilli, F.

AU - Arguedas Cuendis, S.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bacher, D.

AU - Bachiller Perea, I.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Bailly-Reyre, A.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Castro Godinez, J.

PY - 2024/11/1

Y1 - 2024/11/1

N2 - The longitudinal polarization fraction of the D* meson is measured in B0→D*-τ+ντ decays, where the τ lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV and corresponding to an integrated luminosity of 5 fb-1. The D* polarization fraction FLD* is measured in two q2 regions, below and above 7 GeV2/c4, where q2 is defined as the squared invariant mass of the τντ system. The FLD∗ values are measured to be 0.52±0.07±0.04 and 0.34±0.08±0.02 for the lower and higher q2 regions, respectively. The first uncertainties are statistical and the second systematic. The average value over the whole q2 range is FLD∗=0.41±0.06±0.03. These results are compatible with the Standard Model predictions.

AB - The longitudinal polarization fraction of the D* meson is measured in B0→D*-τ+ντ decays, where the τ lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV and corresponding to an integrated luminosity of 5 fb-1. The D* polarization fraction FLD* is measured in two q2 regions, below and above 7 GeV2/c4, where q2 is defined as the squared invariant mass of the τντ system. The FLD∗ values are measured to be 0.52±0.07±0.04 and 0.34±0.08±0.02 for the lower and higher q2 regions, respectively. The first uncertainties are statistical and the second systematic. The average value over the whole q2 range is FLD∗=0.41±0.06±0.03. These results are compatible with the Standard Model predictions.

UR - https://www.scopus.com/pages/publications/85210772489

U2 - 10.1103/PhysRevD.110.092007

DO - 10.1103/PhysRevD.110.092007

M3 - Artículo

AN - SCOPUS:85210772489

SN - 2470-0010

VL - 110

JO - Physical Review D

JF - Physical Review D

IS - 9

M1 - 092007