An amplitude analysis of the decay Λb0 → D0pπ− is performed in the part of the phase space containing resonances in the D0p channel. The study is based on a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions recorded by the LHCb experiment. The spectrum of excited Λc+ states that decay into D0p is studied. The masses, widths and quantum numbers of the Λc(2880)+ and Λc(2940)+ resonances are measured. The constraints on the spin and parity for the Λc(2940)+ state are obtained for the first time. A near-threshold enhancement in the D0p amplitude is investigated and found to be consistent with a new resonance, denoted the Λc(2860)+, of spin 3/2 and positive parity.
Study of the D 0 p amplitude in Λb0 → D 0 pπ − decays / R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P.A. Cartelle, A.A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. Andreotti, J.E. Andrews, R.B. Appleby, F. Archilli, P. d'Argent, J.A. Romeu, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, I. Babuschkin, S. Bachmann, J.J. Back, A. Badalov, C. Baesso, S. Baker, V. Balagura, W. Baldini, R.J. Barlow, C. Barschel, S. Barsuk, W. Barter, F. Baryshnikov, M. Baszczyk, V. Batozskaya, B. Batsukh, V. Battista, A. Bay, L. Beaucourt, J. Beddow, F. Bedeschi, I. Bediaga, A. Beiter, L.J. Bel, V. Bellee, N. Belloli, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, A. Berezhnoy, R. Bernet, A. Bertolin, C. Betancourt, F. Betti, M.-. Bettler, M. van Beuzekom, I. Bezshyiko, S. Bifani, P. Billoir, T. Bird, A. Birnkraut, A. Bitadze, A. Bizzeti, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, T. Boettcher, A. Bondar, N. Bondar, W. Bonivento, I. Bordyuzhin, A. Borgheresi, S. Borghi, M. Borisyak, M. Borsato, F. Bossu, M. Boubdir, T.J.V. Bowcock, E. Bowen, C. Bozzi, S. Braun, M. Britsch, T. Britton, J. Brodzicka, E. Buchanan, C. Burr, A. Bursche, J. Buytaert, S. Cadeddu, R. Calabrese, M. Calvi, M.C. Gomez, A. Camboni, P. Campana, D.H.C. Perez, L. Capriotti, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, P. Carniti, L. Carson, K.C. Akiba, G. Casse, L. Cassina, L.C. Garcia, M. Cattaneo, G. Cavallero, R. Cenci, D. Chamont, M. Charles, P. Charpentier, G. Chatzikonstantinidis, M. Chefdeville, S. Chen, S.-. Cheung, V. Chobanova, M. Chrzaszcz, X.C. Vidal, G. Ciezarek, P.E.L. Clarke, M. Clemencic, H.V. Cliff, J. Closier, V. Coco, J. Cogan, E. Cogneras, V. Cogoni, L. Cojocariu, G. Collazuol, P. Collins, A. Comerma-Montells, A. Contu, A. Cook, G. Coombs, S. Coquereau, G. Corti, M. Corvo, C.M.C. Sobral, B. Couturier, G.A. Cowan, D.C. Craik, A. Crocombe, M.C. Torres, S. Cunliffe, R. Currie, C. D'Ambrosio, F. Da Cunha Marinho, E. Dall'Occo, J. Dalseno, P.N.Y. David, A. Davis, K. De Bruyn, S. De Capua, M. De Cian, J.M. De Miranda, L. De Paula, M. De Serio, P. De Simone, C.T. Dean, D. Decamp, M. Deckenhoff, L. Del Buono, M. Demmer, A. Dendek, D. Derkach, O. Deschamps, F. Dettori, B. Dey, A. Di Canto, H. Dijkstra, F. Dordei, M. Dorigo, A.D. Suarez, A. Dovbnya, K. Dreimanis, L. Dufour, G. Dujany, K. Dungs, P. Durante, R. Dzhelyadin, A. Dziurda, A. Dzyuba, N. Deleage, S. Easo, M. Ebert, U. Egede, V. Egorychev, S. Eidelman, S. Eisenhardt, U. Eitschberger, R. Ekelhof, L. Eklund, S. Ely, S. Esen, H.M. Evans, T. Evans, A. Falabella, N. Farley, S. Farry, R. Fay, D. Fazzini, D. Ferguson, A.F. Prieto, F. Ferrari, F.F. Rodrigues, M. Ferro-Luzzi, S. Filippov, R.A. Fini, M. Fiore, M. Fiorini, M. Firlej, C. Fitzpatrick, T. Fiutowski, F. Fleuret, K. Fohl, M. Fontana, F. Fontanelli, D.C. Forshaw, R. Forty, V.F. Lima, M. Frank, C. Frei, J. Fu, W. Funk, E. Furfaro, C. Farber, A.G. Torreira, D. Galli, S. Gallorini, S. Gambetta, M. Gandelman, P. Gandini, Y. Gao, L.M.G. Martin, J.G. Pardinas, J.G. Tico, L. Garrido, P.J. Garsed, D. Gascon, C. Gaspar, L. Gavardi, G. Gazzoni, D. Gerick, E. Gersabeck, M. Gersabeck, T. Gershon, P. Ghez, S. Giani, V. Gibson, O.G. Girard, L. Giubega, K. Gizdov, V.V. Gligorov, D. Golubkov, A. Golutvin, A. Gomes, I.V. Gorelov, C. Gotti, R.G. Diaz, L.A.G. Cardoso, E. Grauges, E. Graverini, G. Graziani, A. Grecu, P. Griffith, L. Grillo, B.R.G. Cazon, O. Grunberg, E. Gushchin, Y. Guz, T. Gys, C. Gobel, T. Hadavizadeh, C. Hadjivasiliou, G. Haefeli, C. Haen, S.C. Haines, B. Hamilton, X. Han, S. Hansmann-Menzemer, N. Harnew, S.T. Harnew, J. Harrison, M. Hatch, J. He, T. Head, A. Heister, K. Hennessy, P. Henrard, L. Henry, E. van Herwijnen, M. Hess, A. Hicheur, D. Hill, C. Hombach, H. Hopchev, W. Hulsbergen, T. Humair, M. Hushchyn, D. Hutchcroft, M. Idzik, P. Ilten, R. Jacobsson, A. Jaeger, J. Jalocha, E. Jans, A. Jawahery, F. Jiang, M. John, D. Johnson, C.R. Jones, C. Joram, B. Jost, N. Jurik, S. Kandybei, M. Karacson, J.M. Kariuki, S. Karodia, M. Kecke, M. Kelsey, M. Kenzie, T. Ketel, E. Khairullin, B. Khanji, C. Khurewathanakul, T. Kirn, S. Klaver, K. Klimaszewski, S. Koliiev, M. Kolpin, I. Komarov, R.F. Koopman, P. Koppenburg, A. Kosmyntseva, A. Kozachuk, M. Kozeiha, L. Kravchuk, K. Kreplin, M. Kreps, P. Krokovny, F. Kruse, W. Krzemien, W. Kucewicz, M. Kucharczyk, V. Kudryavtsev, A.K. Kuonen, K. Kurek, T. Kvaratskheliya, D. Lacarrere, G. Lafferty, A. Lai, G. Lanfranchi, C. Langenbruch, T. Latham, C. Lazzeroni, R. Le Gac, J. van Leerdam, A. Leflat, J. Lefrancois, R. Lefevre, F. Lemaitre, E.L. Cid, O. Leroy, T. Lesiak, B. Leverington, T. Li, Y. Li, T. Likhomanenko, R. Lindner, C. Linn, F. Lionetto, X. Liu, D. Loh, I. Longstaff, J.H. Lopes, D. Lucchesi, M.L. Martinez, H. Luo, A. Lupato, E. Luppi, O. Lupton, A. Lusiani, X. Lyu, F. Machefert, F. Maciuc, O. Maev, K. Maguire, S. Malde, A. Malinin, T. Maltsev, G. Manca, G. Mancinelli, P. Manning, J. Maratas, J.F. Marchand, U. Marconi, C.M. Benito, M. Marinangeli, P. Marino, J. Marks, G. Martellotti, M. Martin, M. Martinelli, D.M. Santos, F.M. Vidal, D.M. Tostes, L.M. Massacrier, A. Massafferri, R. Matev, A. Mathad, Z. Mathe, C. Matteuzzi, A. Mauri, E. Maurice, B. Maurin, A. Mazurov, M. McCann, A. McNab, R. McNulty, B. Meadows, F. Meier, M. Meissner, D. Melnychuk, M. Merk, A. Merli, E. Michielin, D.A. Milanes, M.-. Minard, D.S. Mitzel, A. Mogini, J.M. Rodriguez, I.A. Monroy, S. Monteil, M. Morandin, P. Morawski, A. Morda, M.J. Morello, O. Morgunova, J. Moron, A.B. Morris, R. Mountain, F. Muheim, M. Mulder, M. Mussini, D. Muller, J. Muller, K. Muller, V. Muller, P. Naik, T. Nakada, R. Nandakumar, A. Nandi, I. Nasteva, M. Needham, N. Neri, S. Neubert, N. Neufeld, M. Neuner, T.D. Nguyen, C. Nguyen-Mau, S. Nieswand, R. Niet, N. Nikitin, T. Nikodem, A. Nogay, A. Novoselov, D.P. O'Hanlon, A. Oblakowska-Mucha, V. Obraztsov, S. Ogilvy, R. Oldeman, C.J.G. Onderwater, J.M.O. Goicochea, A. Otto, P. Owen, A. Oyanguren, P.R. Pais, A. Palano, M. Palutan, A. Papanestis, M. Pappagallo, L.L. Pappalardo, W. Parker, C. Parkes, G. Passaleva, A. Pastore, G.D. Patel, M. Patel, C. Patrignani, A. Pearce, A. Pellegrino, G. Penso, M.P. Altarelli, S. Perazzini, P. Perret, L. Pescatore, K. Petridis, A. Petrolini, A. Petrov. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2017:5(2017 May 05). [10.1007/JHEP05(2017)030]
Study of the D 0 p amplitude in Λb0 → D 0 pπ − decays
A. Merli;N. Neri;
2017
Abstract
An amplitude analysis of the decay Λb0 → D0pπ− is performed in the part of the phase space containing resonances in the D0p channel. The study is based on a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions recorded by the LHCb experiment. The spectrum of excited Λc+ states that decay into D0p is studied. The masses, widths and quantum numbers of the Λc(2880)+ and Λc(2940)+ resonances are measured. The constraints on the spin and parity for the Λc(2940)+ state are obtained for the first time. A near-threshold enhancement in the D0p amplitude is investigated and found to be consistent with a new resonance, denoted the Λc(2860)+, of spin 3/2 and positive parity.File | Dimensione | Formato | |
---|---|---|---|
Aaij2017_Article_StudyOfTheD0PAmPlitudeInΛb0D0P.pdf
accesso aperto
Tipologia:
Publisher's version/PDF
Dimensione
2.22 MB
Formato
Adobe PDF
|
2.22 MB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.