LHCb collaborationAaij, R.Beteta, C. AbellanAdeva, B.Adinolfi, M.Aidala, C. A.Ajaltouni, Z.Akar, S.Albicocco, P.Albrecht, J.Alessio, F.Alexander, M.Albero, A. AlfonsoAlkhazov, G.Cartelle, P. AlvarezAlves, A. A., Jr.Amato, S.Amerio, S.Amhis, Y.An, L.Anderlini, L.Andreassi, G.Andreotti, M.Andrews, J. E.Archilli, F.d'Argent, P.Romeu, J. ArnauArtamonov, A.Artuso, M.Arzymatov, K.Aslanides, E.Atzeni, M.Audurier, B.Bachmann, S.Back, J. J.Baker, S.Balagura, V.Baldini, W.Baranov, A.Barlow, R. J.Barrand, G. C.Barsuk, S.Barter, W.Bartolini, M.baryshnikov, F.Batozskaya, V.Batsukh, B.Battig, A.Battista, V.Bay, A.Beddow, J.Bedeschi, F.Bediaga, I.Beiter, A.Bel, L. J.Belin, S.Beliy, N.Bellee, V.Belloli, N.Belous, K.Belyaev, I.Ben-Haim, E.Bencivenni, G.Benson, S.Beranek, S.Berezhnoy, A.Bernet, R.Berninghoff, D.Bertholet, E.Bertolin, A.Betancourt, C.Betti, F.Bettler, M. O.van Beuzekom, M.Bezshyiko, Ia.Bhasin, S.Bhom, J.Bifani, S.Billoir, P.Birnkraut, A.Bizzeti, A.Bjorn, M.Blago, M. P.Blake, T.Blanc, F.Blusk, S.Bobulska, D.Bocci, V.Boente Garcia, O.Boettcher, T.Bondar, A.Bondar, N.Borghi, S.Borisyak, M.Borsato, M.Bossu, F.Boubdir, M.Bowcock, T. J. V.Bozzi, C.Braun, S.Brodski, M.Brodzicka, J.Gonzalo, A. BrossaBrundu, D.Buchanan, E.Buonaura, A.Burr, C.Bursche, A.Buytaert, J.Byczynski, W.Cadeddu, S.Cai, H.Calabrese, R.Calladine, R.Calvi, M.Calvo Gomez, M.Camboni, A.Campana, P.Perez, D. H. CamporaCapriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carniti, P.Carvalho Akiba, K.Casse, G.Cassina, L.Cattaneo, M.Cavallero, G.Cenci, R.Chamont, D.Chapman, M. G.Charles, M.Charpentier, Ph.Chatzikonstantinidis, G.Chefdeville, M.Chekalina, V.Chen, C.Chen, S.Chitic, S. -G.Chobanova, V.Chrzaszcz, M.Chubykin, A.Ciambrone, P.Cid Vidal, X.Ciezarek, G.Cindolo, F.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coco, V.Coelho, J. A. B.Cogan, J.Cogneras, E.Cojocariu, L.Collins, P.Colombo, T.Comerma-Montells, A.Contu, A.Coombs, G.Coquereau, S.Corti, G.Corvo, M.Sobral, C. M. CostaCouturier, B.Cowan, G. A.Craik, D. C.Crocombe, A.Cruz Torres, M.Currie, R.D'Ambrosio, C.Da Cunha Marinho, F.Da Silva, C. L.Dall'Occo, E.Dalseno, J.Danilina, A.Davis, A.Francisco, O. De AguiarDe Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, P.Dean, C. T.Decamp, D.Del Buono, L.Delaney, B.Dembinski, H. -P.Demmer, M.Dendek, A.Derkach, D.Deschamps, O.Desse, F.Dettori, F.Dey, B.Di Canto, A.Di Nezza, P.Didenko, S.Dijkstra, H.Dordei, F.Dorigo, M.Dosil Suarez, A.Douglas, L.Dovbnya, A.Dreimanis, K.Dufour, L.Dujany, G.Durante, P.Durham, J. M.Dutta, D.Dzhelyadin, R.Dziewiecki, M.Dziurda, A.Dzyuba, A.Easo, S.Egede, U.Egorychev, V.Eidelman, S.Eisenhardt, S.Eitschberger, U.Ekelhof, R.Eklund, L.Ely, S.Ene, A.Escher, S.Esen, S.Evans, T.Falabella, A.Farley, N.Farry, S.Fazzini, D.Declara, P. FernandezFernandez Prieto, A.Ferrari, F.Lopes, L. FerreiraFerreira Rodrigues, F.Ferro-Luzzi, M.Filippov, S.Fini, R. A.Fiorini, M.Firlej, M.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fontana, M.Fontanelli, F.Forty, R.Lima, V. FrancoFrank, M.Frei, C.Fu, J.Funk, W.Farber, C.Feo, M.Gabriel, E.Gallas Torreira, A.Galli, D.Gallorini, S.Gambetta, S.Gan, Y.Gandelman, M.Gandini, P.Gao, Y.Garcia Martin, L. M.Garcia Plana, B.Pardinas, J. GarciaTico, J. GarraGarrido, L.Gascon, D.Gaspar, C.Gavardi, L.Gazzoni, G.Gerick, D.Gersabeck, E.Gersabeck, M.Gershon, T.Gerstel, D.Ghez, Ph.Gibson, V.Girard, O. G.Gironella Gironell, P.Giubega, L.Gizdov, K.Gligorov, V. V.Golubkov, D.Golutvin, A.Gomes, A.Gorelov, I. V.Gotti, C.Govorkova, E.Grabowski, J. P.Graciani Diaz, R.Cardoso, L. A. GranadoGrauges, E.Graverini, E.Graziani, G.Grecu, A.Greim, R.Griffith, P.Grillo, L.Gruber, L.Cazon, B. R. GrubergGruenberg, O.Gu, C.Gushchin, E.Guth, A.Guz, Yu.Gys, T.Gobel, C.Hadavizadeh, T.Hadjivasiliou, C.Haefeli, G.Haen, C.Haines, S. C.Hamilton, B.Han, X.Hancock, T. H.Hansmann-Menzemer, S.Harnew, N.Harrison, T.Hasse, C.Hatch, M.He, J.Hecker, M.Heinicke, K.Heister, A.Hennessy, K.Henry, L.van Herwijnen, E.Heuel, J.Hess, M.Hicheur, A.Charman, R. HidalgoHill, D.Hilton, M.Hopchev, P. H.Hu, J.Hu, W.Huang, W.Huard, Z. C.Hulsbergen, W.Humair, T.Hushchyn, M.Hutchcroft, D.Hynds, D.Ibis, P.Idzik, M.Ilten, P.Inglessi, A.Inyakin, A.Ivshin, K.Jacobsson, R.Jalocha, J.Jans, E.Jashal, B. K.Jawahery, A.Jiang, F.John, M.Johnson, D.Jones, C. R.Joram, C.Jost, B.Jurik, N.Kandybei, S.Karacson, M.Kariuki, J. M.Karodia, S.Kazeev, N.Kecke, M.Keizer, F.Kelsey, M.Kenzie, M.Ketel, T.Khairullin, E.Khanji, B.Khurewathanakul, C.Kim, K. E.Kirn, T.Kirsebom, V. S.Klaver, S.Klimaszewski, K.Klimkovich, T.Koliiev, S.Kolpin, M.Kopecna, R.Koppenburg, P.Kostiuk, I.Kotriakhova, S.Kozeiha, M.Kravchuk, L.Kreps, M.Kress, F.Krokovny, P.Krupa, W.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, V.Kuonen, A. K.Kvaratskheliya, T.Lacarrere, D.Lafferty, G.Lai, A.Lancierini, D.Lanfranchi, G.Langenbruch, C.Latham, T.Lazzeroni, C.Le Gac, R.At, LeLefevre, R.Lemaitre, F.Leroy, O.Lesiak, T.Leverington, B.Li, P. -R.Li, Y.Li, Z.Liang, X.Likhomanenko, T.Lindner, R.Lionetto, F.Lisovskyi, V.Liu, G.Liu, X.Loh, D.Loi, A.Longstaff, I.Lopes, J. H.Lovell, G. H.Lucchesi, D.Lucio Martinez, M.Lupato, A.Luppi, E.Lupton, O.Lusiani, A.Lyu, X.Machefert, F.Maciuc, F.Macko, V.Mackowiak, P.Maddrell-Mander, S.Maev, O.Maguire, K.Maisuzenko, D.Majewski, M. W.Malde, S.Malecki, B.Malinin, A.Maltsev, T.Manca, G.Mancinelli, G.Marangotto, D.Maratas, J.Marchand, J. F.Marconi, U.Benito, C. MarinMarinangeli, M.Marino, P.Marks, J.Marshall, P. J.Martellotti, G.Martinelli, M.Martinez Santos, D.Martinez Vidal, F.Massafferri, A.Materok, M.Matev, R.Mathad, A.Mathe, Z.Matteuzzi, C.Mauri, A.Maurice, E.Maurin, B.McCann, M.Mcnab, A.McNulty, R.Mead, J. V.Meadows, B.Meaux, C.Meinert, N.Melnychuk, D.Merk, M.Merli, A.Michielin, E.Milanes, D. A.Millard, E.Minard, M. -N.Minzoni, L.Mitzel, D. S.Mogini, A.Moise, R. D.Mombaecher, T.Monroy, I. A.Monteil, S.Morandin, M.Morello, G.Morello, M. J.Morgunova, O.Moron, J.Morris, A. B.Mountain, R.Muheim, F.Mukherjee, M.Mulder, M.Murphy, C. H.Murray, D.Moedden, A.Mueller, D.Mueller, J.Mueller, K.Mueller, V.Naik, P.Nakada, T.Nandakumar, R.Nandi, A.Nanut, T.Nasteva, I.Needham, M.Neri, N.Neubert, S.Neufeld, N.Newcombe, R.Nguyen, T. D.Nguyen-Mau, C.Nieswand, S.Niet, R.Nikitin, N.Nogay, A.Nolte, N. S.O'Hanlon, D. P.Oblakowska-Mucha, A.Obraztsov, V.Oldeman, R.Onderwater, C. J. G.Ossowska, A.Otalora Goicochea, J. M.Ovsiannikova, T.Owen, P.Oyanguren, A.Pais, P. R.Pajero, T.Palano, A.Palutan, M.Panshin, G.Papanestis, A.Pappagallo, M.Pappalardo, L. L.Parker, W.Parkes, C.Passaleva, G.Pastore, A.Patel, M.Patrignani, C.Pearce, A.Pellegrino, A.Penso, G.Altarelli, M. PepePerazzini, S.Pereima, D.Perret, P.Pescatore, L.Petridis, K.Petrolini, A.Petrov, A.Petrucci, S.Petruzzo, M.Pietrzyk, B.Pietrzyk, G.Pikies, M.Pili, M.Pinci, D.Pinzino, J.Pisani, F.Piucci, A.Placinta, V.Playfer, S.Plews, J.Plo Casasus, M.Polci, F.Lener, M. PoliPoluektov, A.Polukhina, N.Polyakov, I.Polycarpo, E.Pomery, G. J.Ponce, S.Popov, A.Popov, D.Poslavskii, S.Price, E.Prisciandaro, J.Prouve, C.Pugatch, V.Navarro, A. PuigPullen, H.Punzi, G.Qian, W.Qin, J.Quagliani, R.Quintana, B.Raab, N. V.Rachwal, B.Rademacker, J. H.Rama, M.Ramos Pernas, M.Rangel, M. S.Ratnikov, F.Raven, G.Salzgeber, M. RavonelReboud, M.Redi, F.Reichert, S.dos Reis, A. C.Reiss, F.Remon Alepuz, C.Ren, Z.Renaudin, V.Ricciardi, S.Richards, S.Rinnert, K.Robbe, P.Robert, A.Rodrigues, A. B.Rodrigues, E.Rodriguez Lopez, J. A.Roehrken, M.Roiser, S.Rollings, A.Romanovskiy, V.Romero Vidal, A.Rotondo, M.Rudolph, M. S.Ruf, T.Ruiz Vidal, J.Saborido Silva, J. J.Sagidova, N.Saitta, B.Salustino Guimaraes, V.Gras, C. SanchezSanchez Mayordomo, C.Sanmartin Sedes, B.Santacesaria, R.Santamarina Rios, C.Santimaria, M.Santovetti, E.Sarpis, G.Sarti, A.Satriano, C.Satta, A.Saur, M.Savrina, D.Schael, S.Schellenberg, M.Schiller, M.Schindler, H.Schmelling, M.Schmelzer, T.Schmidt, B.Schneider, O.Schopper, A.Schreiner, H. F.Schubiger, M.Schulte, S.Schune, M. H.Schwemmer, R.Sciascia, B.Sciubba, A.Semennikov, A.Sepulveda, E. S.Sergi, A.Serra, N.Serrano, J.Sestini, L.Seuthe, A.Seyfert, P.Shapkin, M.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, V.Shmanin, E.Siddi, B. G.Coutinho, R. SilvaSilva de Oliveira, L.Simi, G.Simone, S.Skiba, I.Skidmore, N.Skwarnicki, T.Slater, M. W.Smeaton, J. G.Smith, E.Smith, I. T.Smith, M.Soares, M.Soares Lavra, L.Sokoloff, M. D.Soler, F. J. P.Souza De Paula, B.Spaan, B.Norella, E. SpadaroSpradlin, P.Stagni, F.Stahl, M.Stahl, S.Stefko, P.Stefkova, S.Steinkamp, O.Stemmle, S.Stenyakin, O.Stepanova, M.Stevens, H.Stocchi, A.Stone, S.Storaci, B.Stracka, S.Stramaglia, M. E.Straticiuc, M.Straumann, U.Strokov, S.Sun, J.Sun, L.Sun, Y.Swientek, K.Szabelski, A.Szumlak, T.Szymanski, M.T'Jampens, S.Tang, Z.Tayduganov, A.Tekampe, T.Tellarini, G.Teubert, F.Thomas, E.van Tilburg, J.Tilley, M. J.Tisserand, V.Tobin, M.Tolk, S.Tomassetti, L.Tonelli, D.Tou, D. Y.Tourinho Jadallah Aoude, R.Tournefier, E.Traill, M.Tran, M. T.Trisovic, A.Tsaregorodtsev, A.Tuci, G.Tully, A.Tuning, N.Ukleja, A.Usachov, A.Ustyuzhanin, A.Uwer, U.Vagner, A.Vagnoni, V.Valassi, A.Valat, S.Valenti, G.Gomez, R. VazquezVazquez Regueiro, P.Vecchi, S.van Veghel, M.Velthuis, J. J.Veltri, M.Veneziano, G.Venkateswaran, A.Vernet, M.Veronesi, M.Vesterinen, M.Barbosa, J. V. VianaVieira, D.Vieites Diaz, M.Viemann, H.Vilasis-Cardona, X.Vitkovskiy, A.Vitti, M.Volkov, V.Vollhardt, A.Bruch, D. VomVoneki, B.Vorobyev, A.Vorobyev, V.Voropaev, N.de Vries, J. A.Sierra, C. VazquezWaldi, R.Walsh, J.Wang, J.Wang, M.Wang, Y.Wang, Z.Ward, D. R.Wark, H. M.Watson, N. K.Websdale, D.Weiden, A.Weisser, C.Whitehead, M.Wilkinson, G.Wilkinson, M.Williams, I.Williams, M. R. J.Williams, M.Williams, T.Wilson, F. F.Winn, M.Wislicki, W.Witek, M.Wormser, G.Wotton, S. A.Wyllie, K.Xiao, D.Xie, Y.Xu, A.Xu, M.Xu, Q.Xu, Z.Yang, Z.Yao, Y.Yeomans, L. E.Yin, H.Yu, J.Yuan, X.Yushchenko, O.Zarebski, K. A.Zavertyaev, M.Zhang, D.Zhang, L.Zhang, W. C.Zhang, Y.Zhelezov, A.Zheng, Y.Zhu, X.Zhukov, V.Zonneveld, J. B.Zucchelli, S.2021-06-192021-06-192021-06-192021-05-1210.1007/JHEP05(2021)095https://infoscience.epfl.ch/handle/20.500.14299/179441WOS:000651537500001The 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"></graphicPhysics, Particles & FieldsPhysicsb physicsbranching fractionhadron-hadron scattering (experiments)qcdquarkoniumtext::journal::journal article::research article