Measurements of the Λb0→J/ψΛ decay amplitudes and the Λb0 polarisation in pp collisions at √s=7 TeV

R. Aaij; J.F.J. van den Brand; F. Dettori; T.J. Ketel; R. Koopman; R.W. Lambert; D. Martinez-Santos; M.H.M. Merk; H.G. Raven; M. Schiller; V. Syropoulos; S. Tolk; Collaboration LHCb

doi:10.1016/j.physletb.2013.05.041

Measurements of the Λb0→J/ψΛ decay amplitudes and the Λb0 polarisation in pp collisions at √s=7 TeV

R. Aaij, J.F.J. van den Brand, F. Dettori, T.J. Ketel, R. Koopman, R.W. Lambert, D. Martinez-Santos, M.H.M. Merk, H.G. Raven, M. Schiller, V. Syropoulos, S. Tolk, Collaboration LHCb

(Astro)-Particles Physics

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Abstract

An angular analysis of Λ⁰<inf>b</inf> → J /ψΛ decays is performed using a data sample corresponding to 1.0fb^-1 collected in pp collisions at √s = 7 TeV with the LHCb detector at the LHC. A parity violating asymmetry parameter characterising the Λ⁰<inf>b</inf> → J /ψΛ decay of 0.05 ± 0.17 ± 0.07 and a Λ⁰<inf>b</inf> transverse production polarisation of 0.06 ± 0.07 ± 0.02 are measured, where the rst uncertainty is statistical and the second systematic. © 2013 CERN. Published by Elsevier B.V.

Original language	English
Pages (from-to)	27-35
Journal	Physics Letters B
Volume	724
Issue number	1-3
DOIs	https://doi.org/10.1016/j.physletb.2013.05.041
Publication status	Published - 2013

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Aaij:2013oxa

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Aaij, R., van den Brand, J. F. J., Dettori, F., Ketel, T. J., Koopman, R., Lambert, R. W., Martinez-Santos, D., Merk, M. H. M., Raven, H. G., Schiller, M., Syropoulos, V., Tolk, S., & LHCb, C. (2013). Measurements of the Λb0→J/ψΛ decay amplitudes and the Λb0 polarisation in pp collisions at √s=7 TeV. Physics Letters B, 724(1-3), 27-35. https://doi.org/10.1016/j.physletb.2013.05.041

@article{c5ec28b51b6e41b397af84fca47291bb,

title = "Measurements of the Λb0→J/ψΛ decay amplitudes and the Λb0 polarisation in pp collisions at √s=7 TeV",

abstract = "An angular analysis of Λ0b → J /ψΛ decays is performed using a data sample corresponding to 1.0fb-1 collected in pp collisions at √s = 7 TeV with the LHCb detector at the LHC. A parity violating asymmetry parameter characterising the Λ0b → J /ψΛ decay of 0.05 ± 0.17 ± 0.07 and a Λ0b transverse production polarisation of 0.06 ± 0.07 ± 0.02 are measured, where the rst uncertainty is statistical and the second systematic. {\textcopyright} 2013 CERN. Published by Elsevier B.V.",

author = "R. Aaij and {van den Brand}, J.F.J. and F. Dettori and T.J. Ketel and R. Koopman and R.W. Lambert and D. Martinez-Santos and M.H.M. Merk and H.G. Raven and M. Schiller and V. Syropoulos and S. Tolk and Collaboration LHCb",

note = "Aaij:2013oxa",

year = "2013",

doi = "10.1016/j.physletb.2013.05.041",

language = "English",

volume = "724",

pages = "27--35",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-3",

}

Aaij, R, van den Brand, JFJ, Dettori, F, Ketel, TJ, Koopman, R, Lambert, RW, Martinez-Santos, D, Merk, MHM, Raven, HG, Schiller, M, Syropoulos, V, Tolk, S & LHCb, C 2013, 'Measurements of the Λb0→J/ψΛ decay amplitudes and the Λb0 polarisation in pp collisions at √s=7 TeV', Physics Letters B, vol. 724, no. 1-3, pp. 27-35. https://doi.org/10.1016/j.physletb.2013.05.041

TY - JOUR

T1 - Measurements of the Λb0→J/ψΛ decay amplitudes and the Λb0 polarisation in pp collisions at √s=7 TeV

AU - Aaij, R.

AU - van den Brand, J.F.J.

AU - Dettori, F.

AU - Ketel, T.J.

AU - Koopman, R.

AU - Lambert, R.W.

AU - Martinez-Santos, D.

AU - Merk, M.H.M.

AU - Raven, H.G.

AU - Schiller, M.

AU - Syropoulos, V.

AU - Tolk, S.

AU - LHCb, Collaboration

N1 - Aaij:2013oxa

PY - 2013

Y1 - 2013

N2 - An angular analysis of Λ0b → J /ψΛ decays is performed using a data sample corresponding to 1.0fb-1 collected in pp collisions at √s = 7 TeV with the LHCb detector at the LHC. A parity violating asymmetry parameter characterising the Λ0b → J /ψΛ decay of 0.05 ± 0.17 ± 0.07 and a Λ0b transverse production polarisation of 0.06 ± 0.07 ± 0.02 are measured, where the rst uncertainty is statistical and the second systematic. © 2013 CERN. Published by Elsevier B.V.

AB - An angular analysis of Λ0b → J /ψΛ decays is performed using a data sample corresponding to 1.0fb-1 collected in pp collisions at √s = 7 TeV with the LHCb detector at the LHC. A parity violating asymmetry parameter characterising the Λ0b → J /ψΛ decay of 0.05 ± 0.17 ± 0.07 and a Λ0b transverse production polarisation of 0.06 ± 0.07 ± 0.02 are measured, where the rst uncertainty is statistical and the second systematic. © 2013 CERN. Published by Elsevier B.V.

U2 - 10.1016/j.physletb.2013.05.041

DO - 10.1016/j.physletb.2013.05.041

M3 - Article

SN - 0370-2693

VL - 724

SP - 27

EP - 35

JO - Physics Letters B

JF - Physics Letters B

IS - 1-3

ER -

Measurements of the Λb0→J/ψΛ decay amplitudes and the Λb0 polarisation in pp collisions at √s=7 TeV

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