Search for the resonance-enhanced CP and angular asymmetries in the Λ_c^+→pμ^+ μ^- decay at LHCb

LHCb Collaboration; Míriam Calvo Gómez

doi:10.1103/PhysRevD.111.L091102

Search for the resonance-enhanced CP and angular asymmetries in the Λ_c^+→pμ^+ μ^- decay at LHCb

LHCb Collaboration
, Míriam Calvo Gómez

Research output: Indexed journal article › Article › peer-review

2 Citations (Scopus)

Abstract

The first measurement of the (Formula presented) asymmetry of the decay rate ((Formula presented)) and the (Formula presented) average ((Formula presented)) and (Formula presented) asymmetry ((Formula presented)) of the forward-backward asymmetry in the muon system of (Formula presented) decays is reported. The measurement is performed using a data sample of proton-proton collisions, recorded by the LHCb experiment from 2016 to 2018 at a center-of-mass energy of 13 TeV, which corresponds to an integrated luminosity of (Formula presented). The asymmetries are measured in two regions of dimuon mass near the (Formula presented)-meson mass peak. The dimuon-mass integrated results are (Formula presented), (Formula presented), (Formula presented), where the first uncertainty is statistical and the second systematic. The results are consistent with the conservation of (Formula presented) symmetry and the Standard Model expectations.

Original language	English
Article number	L091102
Number of pages	14
Journal	Physical Review D
Volume	111
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.111.L091102
Publication status	Published - 1 May 2025

Access to Document

10.1103/PhysRevD.111.L091102Licence: CC BY

Cite this

@article{5f8c165f25724288b376250dd8e61044,

title = "Search for the resonance-enhanced CP and angular asymmetries in the Λ\_c\textasciicircum{}+→pμ\textasciicircum{}+ μ\textasciicircum{}- decay at LHCb",

abstract = "The first measurement of the (Formula presented) asymmetry of the decay rate ((Formula presented)) and the (Formula presented) average ((Formula presented)) and (Formula presented) asymmetry ((Formula presented)) of the forward-backward asymmetry in the muon system of (Formula presented) decays is reported. The measurement is performed using a data sample of proton-proton collisions, recorded by the LHCb experiment from 2016 to 2018 at a center-of-mass energy of 13 TeV, which corresponds to an integrated luminosity of (Formula presented). The asymmetries are measured in two regions of dimuon mass near the (Formula presented)-meson mass peak. The dimuon-mass integrated results are (Formula presented), (Formula presented), (Formula presented), where the first uncertainty is statistical and the second systematic. The results are consistent with the conservation of (Formula presented) symmetry and the Standard Model expectations.",

author = "\{LHCb Collaboration\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and \{Abellan Beteta\}, C. and F. Abudin{\'e}n and T. Ackernley and Adefisoye, \{A. A.\} and B. Adeva and M. Adinolfi and P. Adlarson 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 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 A. Anelli and D. Ao and F. Archilli and M. Argenton and \{Arguedas Cuendis\}, S. and A. Artamonov and M. Artuso and E. Aslanides and \{Ata{\'i}de Da Silva\}, R. and M. Atzeni and B. Audurier and D. Bacher and \{Bachiller Perea\}, I. and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and E. Golobardes and \{Valls Canudas\}, N. and X. Vilasis-Cardona and \{Calvo G{\'o}mez\}, M{\'i}riam",

note = "Publisher Copyright: {\textcopyright} 2025 CERN, for the LHCb Collaboration.",

year = "2025",

month = may,

day = "1",

doi = "10.1103/PhysRevD.111.L091102",

language = "English",

volume = "111",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "9",

}

TY - JOUR

T1 - Search for the resonance-enhanced CP and angular asymmetries in the Λ_c^+→pμ^+ μ^- decay at LHCb

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellan Beteta, C.

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adefisoye, A. A.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adlarson, P.

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 - 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 - Anelli, A.

AU - Ao, D.

AU - Archilli, F.

AU - Argenton, M.

AU - Arguedas Cuendis, S.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Ataíde Da Silva, R.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bacher, D.

AU - Bachiller Perea, I.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Golobardes, E.

AU - Valls Canudas, N.

AU - Vilasis-Cardona, X.

AU - Calvo Gómez, Míriam

PY - 2025/5/1

Y1 - 2025/5/1

N2 - The first measurement of the (Formula presented) asymmetry of the decay rate ((Formula presented)) and the (Formula presented) average ((Formula presented)) and (Formula presented) asymmetry ((Formula presented)) of the forward-backward asymmetry in the muon system of (Formula presented) decays is reported. The measurement is performed using a data sample of proton-proton collisions, recorded by the LHCb experiment from 2016 to 2018 at a center-of-mass energy of 13 TeV, which corresponds to an integrated luminosity of (Formula presented). The asymmetries are measured in two regions of dimuon mass near the (Formula presented)-meson mass peak. The dimuon-mass integrated results are (Formula presented), (Formula presented), (Formula presented), where the first uncertainty is statistical and the second systematic. The results are consistent with the conservation of (Formula presented) symmetry and the Standard Model expectations.

AB - The first measurement of the (Formula presented) asymmetry of the decay rate ((Formula presented)) and the (Formula presented) average ((Formula presented)) and (Formula presented) asymmetry ((Formula presented)) of the forward-backward asymmetry in the muon system of (Formula presented) decays is reported. The measurement is performed using a data sample of proton-proton collisions, recorded by the LHCb experiment from 2016 to 2018 at a center-of-mass energy of 13 TeV, which corresponds to an integrated luminosity of (Formula presented). The asymmetries are measured in two regions of dimuon mass near the (Formula presented)-meson mass peak. The dimuon-mass integrated results are (Formula presented), (Formula presented), (Formula presented), where the first uncertainty is statistical and the second systematic. The results are consistent with the conservation of (Formula presented) symmetry and the Standard Model expectations.

UR - https://www.scopus.com/pages/publications/105007565325

UR - http://hdl.handle.net/20.500.14342/6022

U2 - 10.1103/PhysRevD.111.L091102

DO - 10.1103/PhysRevD.111.L091102

M3 - Article

AN - SCOPUS:105007565325

SN - 2470-0010

VL - 111

JO - Physical Review D

JF - Physical Review D

IS - 9

M1 - L091102

ER -

Search for the resonance-enhanced CP and angular asymmetries in the Λ_c^+→pμ^+ μ^- decay at LHCb

Abstract

Access to Document

Other files and links

Fingerprint

Cite this