Observation of the decay Lambda b0 -> chi(c1)p pi(-)

LHCb collaboration

doi:10.1007/JHEP05(2021)095

Observation of the decay Lambda b0 -> chi(c1)p pi(-)

LHCb collaboration

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

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=\"Equa\"><mml:mtable displaystyle=\"true\"><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close=\")\" open=\"(\">Lambda b0</mml:msubsup>-> chi c1p pi-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">Lambda b0</mml:msubsup>-> <mml:msub>chi c1pK-</mml:mfenced></mml:mfrac>=<mml:mfenced close=\")\" open=\"(\">6.59 +/- 1.01 +/- 0.22</mml:mfenced>x10-2,</mml:mtd></mml:mtr><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close=\")\" open=\"(\">Lambda b0 -> <mml:msub>chi c2p pi-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">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=\")\" open=\"(\">Lambda b0 -> <mml:msub>chi c2pK-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">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=\"anchor\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"13130_2021_15658_Article_Equa.gif\"></graphic></disp-formula><p id=\"Par2\">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=\"Figa\" position=\"anchor\"><graphic position=\"anchor\" specific-use=\"HTML\" mime-subtype=\"JPEG\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"MediaObjects/13130_2021_15658_Figa_HTML.jpg\" id=\"MO1\"></graphic

Original language	English
Article number	95
Number of pages	21
Journal	Journal of High Energy Physics
Volume	2021
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2021)095
Publication status	Published - 12 May 2021

Keywords

B physics
Branching fraction
Hadron-Hadron scattering (experiments)
QCD
Quarkonium

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10.1007/JHEP05(2021)095Licence: CC BY

Cite this

@article{c0285c2d6b624c0095328b1728eda923,

title = "Observation of the decay Lambda b0 -> chi(c1)p pi(-)",

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=\{"}Equa\{"}><mml:mtable displaystyle=\{"}true\{"}><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close=\{"})\{"} open=\{"}(\{"}>Lambda b0</mml:msubsup>-> chi c1p pi-</mml:mfenced>B<mml:mfenced close=\{"})\{"} open=\{"}(\{"}>Lambda b0</mml:msubsup>-> <mml:msub>chi c1pK-</mml:mfenced></mml:mfrac>=<mml:mfenced close=\{"})\{"} open=\{"}(\{"}>6.59 +/- 1.01 +/- 0.22</mml:mfenced>x10-2,</mml:mtd></mml:mtr><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close=\{"})\{"} open=\{"}(\{"}>Lambda b0 -> <mml:msub>chi c2p pi-</mml:mfenced>B<mml:mfenced close=\{"})\{"} open=\{"}(\{"}>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=\{"})\{"} open=\{"}(\{"}>Lambda b0 -> <mml:msub>chi c2pK-</mml:mfenced>B<mml:mfenced close=\{"})\{"} open=\{"}(\{"}>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=\{"}anchor\{"} xmlns:xlink=\{"}http://www.w3.org/1999/xlink\{"} xlink:href=\{"}13130_2021_15658_Article_Equa.gif\{"}></graphic></disp-formula><p id=\{"}Par2\{"}>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=\{"}Figa\{"} position=\{"}anchor\{"}><graphic position=\{"}anchor\{"} specific-use=\{"}HTML\{"} mime-subtype=\{"}JPEG\{"} xmlns:xlink=\{"}http://www.w3.org/1999/xlink\{"} xlink:href=\{"}MediaObjects/13130_2021_15658_Figa_HTML.jpg\{"} id=\{"}MO1\{"}></graphic",

keywords = "B physics, Branching fraction, Hadron-Hadron scattering (experiments), QCD, Quarkonium",

author = "R. Aaij and {Abell{\'a}n Beteta}, C. and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and Aidala, {C. A.} and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and Z. Aliouche and G. Alkhazov and {Alvarez Cartelle}, P. and S. Amato and Y. Amhis and L. An and L. Anderlini and A. Andreianov and M. Andreotti and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and Back, {J. J.} and {Baladron Rodriguez}, P. and V. Balagura and W. Baldini and {Baptista Leite}, J. and Barlow, {R. J.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and Basels, {J. M.} and G. Bassi and B. Batsukh and A. Battig and A. Bay and M. Becker and F. Bedeschi and I. Bediaga and {LHCb collaboration} and Marcel Merk and Chris Pawley and {de Vries}, Jacco",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s).",

year = "2021",

month = may,

day = "12",

doi = "10.1007/JHEP05(2021)095",

language = "English",

volume = "2021",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "5",

}

TY - JOUR

T1 - Observation of the decay Lambda b0 -> chi(c1)p pi(-)

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Aidala, C. A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Baptista Leite, J.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Basels, J. M.

AU - Bassi, G.

AU - Batsukh, B.

AU - Battig, A.

AU - Bay, A.

AU - Becker, M.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - LHCb collaboration

AU - Merk, Marcel

AU - Pawley, Chris

AU - de Vries, Jacco

PY - 2021/5/12

Y1 - 2021/5/12

N2 - 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=\"Equa\"><mml:mtable displaystyle=\"true\"><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close=\")\" open=\"(\">Lambda b0</mml:msubsup>-> chi c1p pi-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">Lambda b0</mml:msubsup>-> <mml:msub>chi c1pK-</mml:mfenced></mml:mfrac>=<mml:mfenced close=\")\" open=\"(\">6.59 +/- 1.01 +/- 0.22</mml:mfenced>x10-2,</mml:mtd></mml:mtr><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close=\")\" open=\"(\">Lambda b0 -> <mml:msub>chi c2p pi-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">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=\")\" open=\"(\">Lambda b0 -> <mml:msub>chi c2pK-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">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=\"anchor\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"13130_2021_15658_Article_Equa.gif\"></graphic></disp-formula><p id=\"Par2\">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=\"Figa\" position=\"anchor\"><graphic position=\"anchor\" specific-use=\"HTML\" mime-subtype=\"JPEG\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"MediaObjects/13130_2021_15658_Figa_HTML.jpg\" id=\"MO1\"></graphic

AB - 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=\"Equa\"><mml:mtable displaystyle=\"true\"><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close=\")\" open=\"(\">Lambda b0</mml:msubsup>-> chi c1p pi-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">Lambda b0</mml:msubsup>-> <mml:msub>chi c1pK-</mml:mfenced></mml:mfrac>=<mml:mfenced close=\")\" open=\"(\">6.59 +/- 1.01 +/- 0.22</mml:mfenced>x10-2,</mml:mtd></mml:mtr><mml:mtr><mml:mtd><mml:mfrac>B<mml:mfenced close=\")\" open=\"(\">Lambda b0 -> <mml:msub>chi c2p pi-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">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=\")\" open=\"(\">Lambda b0 -> <mml:msub>chi c2pK-</mml:mfenced>B<mml:mfenced close=\")\" open=\"(\">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=\"anchor\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"13130_2021_15658_Article_Equa.gif\"></graphic></disp-formula><p id=\"Par2\">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=\"Figa\" position=\"anchor\"><graphic position=\"anchor\" specific-use=\"HTML\" mime-subtype=\"JPEG\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"MediaObjects/13130_2021_15658_Figa_HTML.jpg\" id=\"MO1\"></graphic

KW - B physics

KW - Branching fraction

KW - Hadron-Hadron scattering (experiments)

KW - QCD

KW - Quarkonium

UR - http://www.scopus.com/inward/record.url?scp=85105888527&partnerID=8YFLogxK

U2 - 10.1007/JHEP05(2021)095

DO - 10.1007/JHEP05(2021)095

M3 - Article

SN - 1029-8479

VL - 2021

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 5

M1 - 95

ER -

Observation of the decay Lambda b0 -> chi(c1)p pi(-)

Abstract

Keywords

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