@Article{LHCbCollaborationAaij_etal2021,
author="LHCb Collaboration (Aaij, R. et al
and Henry, L.
and Jashal, B. K.
and Martinez-Vidal, F.
and Oyanguren, A.
and Remon Alepuz, C.
and Ruiz Vidal, J.",
title="Observation of the decay Lambda b0 -> chi(c1)p pi(-)",
journal="Journal of High Energy Physics",
year="2021",
publisher="Springer",
volume="05",
number="5",
pages="095--21pp",
optkeywords="B physics; Branching fraction; Hadron-Hadron scattering (experiments); QCD; Quarkonium",
abstract="The Cabibbo-suppressed decay Lambda b0</mml:msubsup>-> chi (c1)p(-) is observed for the first time using data from proton-proton collisions corresponding to an integrated luminosity of 6 fb(-1), collected with the LHCb detector at a centre-of-mass energy of 13 TeV. Evidence for the Lambda b0</mml:msubsup>-> chi (c2)p(-) decay is also found. Using the Lambda b0</mml:msubsup>-> chi (c1)pK(-) decay as normalisation channel, the ratios of branching fractions are measured to be<disp-formula id={\textquoteleft}{\textquoteleft}Equa{\textquoteright}{\textquoteright}><mml:mtable displaystyle={\textquoteleft}{\textquoteleft}true{\textquoteright}{\textquoteright}><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close={\textquoteleft}{\textquoteleft}){\textquoteright}{\textquoteright} open={\textquoteleft}{\textquoteleft}({\textquoteright}{\textquoteright}>Lambda b0</mml:msubsup>-> chi c1p pi-</mml:mfenced>B<mml:mfenced close={\textquoteleft}{\textquoteleft}){\textquoteright}{\textquoteright} open={\textquoteleft}{\textquoteleft}({\textquoteright}{\textquoteright}>Lambda b0</mml:msubsup>-> <mml:msub>chi c1pK-</mml:mfenced></mml:mfrac>=<mml:mfenced close={\textquoteleft}{\textquoteleft}){\textquoteright}{\textquoteright} open={\textquoteleft}{\textquoteleft}({\textquoteright}{\textquoteright}>6.59 +/- 1.01 +/- 0.22</mml:mfenced>x10-2,</mml:mtd></mml:mtr><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close={\textquoteleft}{\textquoteleft}){\textquoteright}{\textquoteright} open={\textquoteleft}{\textquoteleft}({\textquoteright}{\textquoteright}>Lambda b0 -> <mml:msub>chi c2p pi-</mml:mfenced>B<mml:mfenced close={\textquoteleft}{\textquoteleft}){\textquoteright}{\textquoteright} open={\textquoteleft}{\textquoteleft}({\textquoteright}{\textquoteright}>Lambda b0 -> <mml:msub>chi c1p pi-</mml:mfenced></mml:mfrac>=0.95 +/- 0.30 +/- 0.04 +/- 0.04,</mml:mtd></mml:mtr><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close={\textquoteleft}{\textquoteleft}){\textquoteright}{\textquoteright} open={\textquoteleft}{\textquoteleft}({\textquoteright}{\textquoteright}>Lambda b0 -> <mml:msub>chi c2pK-</mml:mfenced>B<mml:mfenced close={\textquoteleft}{\textquoteleft}){\textquoteright}{\textquoteright} open={\textquoteleft}{\textquoteleft}({\textquoteright}{\textquoteright}>Lambda b0 -> <mml:msub>chi c1pK-</mml:mfenced></mml:mfrac>=1.06 +/- 0.05 +/- 0.04 +/- 0.04,</mml:mtd></mml:mtr></mml:mtable><graphic position={\textquoteleft}{\textquoteleft}anchor{\textquoteright}{\textquoteright} xmlns:xlink={\textquoteleft}{\textquoteleft}http://www.w3.org/1999/xlink{\textquoteright}{\textquoteright} xlink:href={\textquoteleft}{\textquoteleft}13130{\textit{}2021{}}15658{\textit{}Article{}}Equa.gif{\textquoteright}{\textquoteright}></graphic></disp-formula><p id={\textquoteleft}{\textquoteleft}Par2{\textquoteright}{\textquoteright}>where the first uncertainty is statistical, the second is systematic and the third is due to the uncertainties in the branching fractions of chi (c1,2)-> J/psi gamma decays.<fig id={\textquoteleft}{\textquoteleft}Figa{\textquoteright}{\textquoteright} position={\textquoteleft}{\textquoteleft}anchor{\textquoteright}{\textquoteright}><graphic position={\textquoteleft}{\textquoteleft}anchor{\textquoteright}{\textquoteright} specific-use={\textquoteleft}{\textquoteleft}HTML{\textquoteright}{\textquoteright} mime-subtype={\textquoteleft}{\textquoteleft}JPEG{\textquoteright}{\textquoteright} xmlns:xlink={\textquoteleft}{\textquoteleft}http://www.w3.org/1999/xlink{\textquoteright}{\textquoteright} xlink:href={\textquoteleft}{\textquoteleft}MediaObjects/13130{\textit{}2021{}}15658{\textit{}Figa{}}HTML.jpg{\textquoteright}{\textquoteright} id={\textquoteleft}{\textquoteleft}MO1{\textquoteright}{\textquoteright}></graphic",
optnote="WOS:000651537500001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4837), last updated on Mon, 07 Jun 2021 08:43:21 +0000",
issn="1029-8479",
doi="10.1007/JHEP05(2021)095",
opturl="https://arxiv.org/abs/2103.04949",
opturl="https://doi.org/10.1007/JHEP05(2021)095",
language="English"
}