Analysis of Λ0b→ pK−μ+μ− decays

LHCb Collaboration; Marco Adinolfi; Jake Amey; Jozie Cottee Meldrum; Zahra Ghorbanimoghaddam; M. Kreps; R. Lane; Alex M Marshall; Camille A Normand; Konstantinos A.  Petridis; Jonas H Rademacker; Jake Reich; Anatoly Solomin; Jaap J Velthuis; R. Wang; Benedict D C Westhenry; Zak Williams

doi:10.1007/JHEP12(2024)147

Analysis of Λ⁰_b→ pK⁻μ⁺μ⁻ decays

LHCb Collaboration, Marco Adinolfi, Jake Amey, Jozie Cottee Meldrum, Zahra Ghorbanimoghaddam, M. Kreps^*, R. Lane, Alex M Marshall, Camille A Normand, Konstantinos A. Petridis, Jonas H Rademacker, Jake Reich, Anatoly Solomin, Jaap J Velthuis, R. Wang, Benedict D C Westhenry, Zak Williams

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Abstract

The differential branching fraction and angular coefficients of Λ0b→ pK−μ+μ− decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of Λ resonances with different spin-parity quantum numbers. The angular coefficients show a pattern of vector-axial vector interference that is a characteristic of the type of flavour-changing neutral-current transition relevant for these decays.

Original language	English
Article number	147
Number of pages	33
Journal	Journal of High Energy Physics
Volume	2024
DOIs	https://doi.org/10.1007/JHEP12(2024)147
Publication status	Published - 19 Dec 2024

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LHCb Collaboration, Adinolfi, M., Amey, J., Cottee Meldrum, J., Ghorbanimoghaddam, Z., Kreps, M., Lane, R., Marshall, A. M., Normand, C. A., Petridis, K. A., Rademacker, J. H., Reich, J., Solomin, A., Velthuis, J. J., Wang, R., Westhenry, B. D. C., & Williams, Z. (2024). Analysis of Λ⁰_b→ pK⁻μ⁺μ⁻ decays. Journal of High Energy Physics, 2024, Article 147. https://doi.org/10.1007/JHEP12(2024)147

@article{bd0095b80f484ede9e1f016023e1b2a9,

title = "Analysis of Λ0b→ pK−μ+μ− decays",

abstract = "The differential branching fraction and angular coefficients of Λ0b→ pK−μ+μ− decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of Λ resonances with different spin-parity quantum numbers. The angular coefficients show a pattern of vector-axial vector interference that is a characteristic of the type of flavour-changing neutral-current transition relevant for these decays.",

author = "{LHCb Collaboration} and Marco Adinolfi and Jake Amey and {Cottee Meldrum}, Jozie and Zahra Ghorbanimoghaddam and M. Kreps and R. Lane and Marshall, {Alex M} and Normand, {Camille A} and Petridis, {Konstantinos A.} and Rademacker, {Jonas H} and Jake Reich and Anatoly Solomin and Velthuis, {Jaap J} and R. Wang and Westhenry, {Benedict D C} and Zak Williams",

year = "2024",

month = dec,

day = "19",

doi = "10.1007/JHEP12(2024)147",

language = "English",

volume = "2024",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

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LHCb Collaboration, Adinolfi, M , Amey, J , Cottee Meldrum, J , Ghorbanimoghaddam, Z, Kreps, M, Lane, R, Marshall, AM , Normand, CA , Petridis, KA , Rademacker, JH , Reich, J , Solomin, A , Velthuis, JJ, Wang, R, Westhenry, BDC & Williams, Z 2024, 'Analysis of Λ⁰_b→ pK⁻μ⁺μ⁻ decays', Journal of High Energy Physics, vol. 2024, 147. https://doi.org/10.1007/JHEP12(2024)147

TY - JOUR

T1 - Analysis of Λ0b→ pK−μ+μ− decays

AU - LHCb Collaboration

AU - Adinolfi, Marco

AU - Amey, Jake

AU - Cottee Meldrum, Jozie

AU - Ghorbanimoghaddam, Zahra

AU - Kreps, M.

AU - Lane, R.

AU - Marshall, Alex M

AU - Normand, Camille A

AU - Petridis, Konstantinos A.

AU - Rademacker, Jonas H

AU - Reich, Jake

AU - Solomin, Anatoly

AU - Velthuis, Jaap J

AU - Wang, R.

AU - Westhenry, Benedict D C

AU - Williams, Zak

PY - 2024/12/19

Y1 - 2024/12/19

N2 - The differential branching fraction and angular coefficients of Λ0b→ pK−μ+μ− decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of Λ resonances with different spin-parity quantum numbers. The angular coefficients show a pattern of vector-axial vector interference that is a characteristic of the type of flavour-changing neutral-current transition relevant for these decays.

AB - The differential branching fraction and angular coefficients of Λ0b→ pK−μ+μ− decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of Λ resonances with different spin-parity quantum numbers. The angular coefficients show a pattern of vector-axial vector interference that is a characteristic of the type of flavour-changing neutral-current transition relevant for these decays.

U2 - 10.1007/JHEP12(2024)147

DO - 10.1007/JHEP12(2024)147

M3 - Article (Academic Journal)

SN - 1029-8479

VL - 2024

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

M1 - 147

ER -