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First Observation of the Radiative Decay Lambda(0 )(b)-> Lambda gamma
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PhysRevLett.123.031801.pdf | Published version | 304.84 kB | Adobe PDF | View/Open |
Title: | First Observation of the Radiative Decay Lambda(0 )(b)-> Lambda gamma |
Authors: | Aaij, R Beteta, CA Adeva, B Adinolfi, M Aidala, CA Ajaltouni, Z Akar, S Albicocco, P Albrecht, J Alessio, F Alexander, M Alfonso Albero, A Alkhazov, G Cartelle, PA Alves Jr, AA Amato, S Amhis, Y An, L Anderlini, L Andreassi, G Andreotti, M Andrews, JE Archilli, F Romeu, JA Artamonov, A Artuso, M Arzymatov, K Aslanides, E Atzeni, M Audurier, B Bachmann, S Back, JJ Baker, S Balagura, V Baldini, W Baranov, A Barlow, RJ Barsuk, S Barter, W Bartolini, M Baryshnikov, F Batozskaya, V Batsukh, B Battig, A Battista, V Bay, A Bedeschi, F Bediaga, I Beiter, A Bel, LJ Belin, S Beliy, N Bellee, V Belloli, N Belous, K Belyaev, I Bencivenni, G Ben-Haim, E Benson, S Beranek, S Berezhnoy, A Bernet, R Berninghoff, D Bertholet, E Bertolin, A Betancourt, C Betti, F Bettler, MO Bezshyiko, I Bhasin, S Bhom, J Bieker, MS Bifani, S Billoir, P Birnkraut, A Bizzeti, A Bjorn, M Blago, MP 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 Boubdir, M Bowcock, TJ Bozzi, C Braun, S Brodski, M Brodzicka, J Gonzalo, AB Brundu, D Buchanan, E Buonaura, A Burr, C Bursche, A Butter, JS Buytaert, J Byczynski, W Cadeddu, S Cai, H Calabrese, R Cali, S Calladine, R Calvi, M Calvo Gomez, M Camboni, A Campana, P Perez, DHC Capriotti, L Carbone, A Carboni, G Cardinale, R Cardini, A Carniti, P Carvalho Akiba, K Casse, G Cattaneo, M Cavallero, G Cenci, R Chapman, MG Charles, M Charpentier, P 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, PEL Clemencic, M Cliff, H Closier, J Coco, V Coelho, JAB Cogan, J Cogneras, E Cojocariu, L Collins, P Colombo, T Comerma-Montells, A Contu, A Coombs, G Coquereau, S Corti, G Sobral, CMC Couturier, B Cowan, GA Craik, DC Crocombe, A Cruz Torres, M Currie, R Da Silva, CL Dall'Occo, E Dalseno, J D'Ambrosio, C Danilina, A D'Argent, P Davis, A Francisco, ODA De Bruyn, K De Capua, S De Cian, M De Miranda, JM De Paula, L De Serio, M De Simone, P De Vries, JA Dean, CT Dean, W 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 Dos Reis, AC Dosil Suarez, A Douglas, L Dovbnya, A Dreimanis, K Dufour, L Dujany, G Durante, P Durham, JM 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 Farber, C Farley, N Farry, S Fazzini, D Feo, M Declara, PF Fernandez Prieto, A Ferrari, F Lopes, LF Ferreira Rodrigues, F Sole, SF Ferro-Luzzi, M Filippov, S Fini, RA Fiorini, M Firlej, M Fitzpatrick, C Fiutowski, T Fleuret, F Fontana, M Fontanelli, F Forty, R Lima, VF Frank, M Frei, C Fu, J Funk, W Gabriel, E Gallas Torreira, A Galli, D Gallorini, S Gambetta, S Gan, Y Gandelman, M Gandini, P Gao, Y Garcia Martin, LM Pardinas, JG Garcia Plana, B Tico, JG Garrido, L Gascon, D Gaspar, C Gazzoni, G Gerick, D Gersabeck, E Gersabeck, M Gershon, T Gerstel, D Ghez, P Gibson, V Girard, OG Gironella Gironell, P Giubega, L Gizdov, K Gligorov, VV Gobel, C Golubkov, D Golutvin, A Gomes, A Gorelov, I Gotti, C Govorkova, E Grabowski, JP Graciani Diaz, R Cardoso, LAG Grauges, E Graverini, E Graziani, G Grecu, A Greim, R Griffith, P Grillo, L Gruber, L Cazon, BRG Gu, C Gushchin, E Guth, A Guz, Y Gys, T Hadavizadeh, T Hadjivasiliou, C Haefeli, G Haen, C Haines, SC Hamilton, B Han, Q Han, X Hancock, TH Hansmann-Menzemer, S Harnew, N Harrison, T Hasse, C Hatch, M He, J Hecker, M Heinicke, K Heister, A Hennessy, K Henry, L Hess, M Heuel, J Hicheur, A Charman, RH Hill, D Hilton, M Hopchev, PH Hu, J Hu, W Huang, W Huard, ZC Hulsbergen, W Humair, T Hushchyn, M Hutchcroft, D Hynds, D Ibis, P Idzik, M Ilten, P Inglessi, A Inyakin, A Ivshin, K Jacobsson, R Jakobsen, S Jalocha, J Jans, E Jashal, BK Jawahery, A Jiang, F John, M Johnson, D Jones, CR Joram, C Jost, B Jurik, N Kandybei, S Karacson, M Kariuki, JM Karodia, S Kazeev, N Kecke, M Keizer, F Kelsey, M Kenzie, M Ketel, T Khanji, B Kharisova, A Khurewathanakul, C Kim, KE Kirn, T Kirsebom, VS Klaver, S Klimaszewski, K Koliiev, S Kolpin, M Kopecna, R Koppenburg, P Kostiuk, I Kot, O Kotriakhova, S Kozeiha, M Kravchuk, L Kreps, M Kress, F Kretzschmar, S Krokovny, P Krupa, W Krzemien, W Kucewicz, W Kucharczyk, M Kudryavtsev, V Kunde, GJ Kuonen, AK Kvaratskheliya, T Lacarrere, D Lafferty, G Lai, A Lancierini, D Lanfranchi, G Langenbruch, C Latham, T Lazzeroni, C Le Gac, R Lefevre, R Leflat, A Lemaitre, F Leroy, O Lesiak, T Leverington, B Li, H Li, P-R Li, X 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, JH Loustau, G Lovell, GH Lucchesi, D Lucio Martinez, M Luo, Y 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, MW Malde, S Malecki, B Malinin, A Maltsev, T Malygina, H Manca, G Mancinelli, G Marangotto, D Maratas, J Marchand, JF Marconi, U Benito, CM Marinangeli, M Marino, P Marks, J Marshall, PJ Martellotti, G Martinelli, M Martinez Santos, D Martinez Vidal, F Massafferri, A Materok, M Matev, R Mathad, A Mathe, Z Matiunin, V Matteuzzi, C Mattioli, KR Mauri, A Maurice, E Maurin, B McCann, M McNab, A McNulty, R Mead, J Meadows, B Meaux, C Meinert, N Melnychuk, D Merk, M Merli, A Michielin, E Milanes, DA Millard, E Minard, M-N Minzoni, L Mitzel, DS Moedden, A Mogini, A Moise, RD Mombaecher, T Monroy, IA Monteil, S Morandin, M Morello, G Morello, MJ Moron, J Morris, AB Mountain, R Muheim, F Mukherjee, M Mulder, M Muller, D Mueller, J Muller, K Mueller, V Murphy, CH Murray, D Naik, P Nakada, T Nandakumar, R Nandi, A Nanut, T Nasteva, I Needham, M Neri, N Neubert, S Neufeld, N Newcombe, R Nguyen, TD Nguyen-Mau, C Nieswand, S Niet, R Nikitin, N Nolte, NS Oblakowska-Mucha, A Obraztsov, V Ogilvy, S O'Hanlon, DP Oldeman, R Onderwater, CJG Osborn, JD Ossowska, A Otalora Goicochea, JM Ovsiannikova, T Owen, P Oyanguren, A Pais, PR Pajero, T Palano, A Palutan, M Panshin, G Papanestis, A Pappagallo, M Pappalardo, LL Parker, W Parkes, C Passaleva, G Pastore, A Patel, M Patrignani, C Pearce, A Pellegrino, A Penso, G Altarelli, MP Perazzini, 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, MP Poliakova, M Poluektov, A Polukhina, N Polyakov, I Polycarpo, E Pomery, GJ Ponce, S Popov, A Popov, D Poslavskii, S Price, E Prouve, C Pugatch, V Navarro, AP Pullen, H Punzi, G Qian, W Qin, J Quagliani, R Quintana, B Raab, N Rachwal, B Rademacker, JH Rama, M Ramos Pernas, M Rangel, MS Ratnikov, F Raven, G Salzgeber, MR Reboud, M Redi, F Reichert, S Reiss, F Remon Alepuz, C Ren, Z Renaudin, V Ricciardi, S Richards, S Rinnert, K Robbe, P Robert, A Rodrigues, AB Rodrigues, E Rodriguez Lopez, JA Roehrken, M Roiser, S Rollings, A Romanovskiy, V Romero Vidal, A Roth, JD Rotondo, M Rudolph, MS Ruf, T Ruiz Vidal, J Saborido Silva, JJ Sagidova, N Saitta, B Salustino Guimaraes, V Gras, CS Sanchez 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, HF Schubiger, M Schulte, S Schune, MH Schwemmer, R Sciascia, B Sciubba, A Semennikov, A Sepulveda, ES Sergi, A Serra, N Serrano, J Sestini, L Seuthe, A Seyfert, P Shapkin, M Shears, T Shekhtman, L Shevchenko, V Shmanin, E Siddi, BG Coutinho, RS Silva de Oliveira, L Simi, G Simone, S Skiba, I Skidmore, N Skwarnicki, T Slater, MW Smeaton, JG Smith, E Smith, IT Smith, M Soares, M Soares Lavra, I Sokoloff, MD Soler, FJP Souza De Paula, B Spaan, B Norella, ES Spradlin, 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 Stracka, S Stramaglia, ME Straticiuc, M Straumann, U Strokov, S Sun, J Sun, L Sun, Y Swientek, K Szabelski, A Szumlak, T Szymanski, M Tang, Z Tekampe, T Tellarini, G Teubert, F Thomas, E Tilley, MJ Tisserand, V TJampens, S Tobin, M Tolk, S Tomassetti, L Tonelli, D Tou, DY Tourinho Jadallah Aoude, R Tournefier, E Traill, M Tran, MT 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 Van Beuzekom, M Van Hecke, H Van Herwijnen, E Van Hulse, CB Van Tilburg, J Van Veghel, M Vasiliev, A Gomez, RV Vazquez Regueiro, P Sierra, CV Vecchi, S Velthuis, JJ Veltri, M Venkateswaran, A Vernet, M Veronesi, M Vesterinen, M Barbosa, JVV Vieira, D Vieites Diaz, M Viemann, H Vilasis-Cardona, X Vitkovskiy, A Vitti, M Volkov, V Vollhardt, A Vom Bruch, D Voneki, B Vorobyev, A Vorobyev, V Voropaev, N Waldi, R Walsh, J Wang, J Wang, M Wang, Y Wang, Z Ward, DR Wark, HM Watson, NK Websdale, D Weiden, A Weisser, C Whitehead, M Wilkinson, G Wilkinson, M Williams, I Williams, M Williams, MRJ Williams, T Wilson, FF Winn, M Wislicki, W Witek, M Wormser, G Wotton, SA Wyllie, K Xiao, D Xie, Y Xing, H Xu, A Xu, M Xu, Q Xu, Z Xu, Z Yang, Z Yang, Z Yao, Y Yeomans, LE Yin, H Yu, J Yuan, X Yushchenko, O Zarebski, KA Zavertyaev, M Zeng, M Zhang, D Zhang, L Zhang, WC Zhang, Y Zhelezov, A Zheng, Y Zhu, X Zhukov, V Zonneveld, JB Zucchelli, S Collaboration, L |
Item Type: | Journal Article |
Abstract: | The radiative decay Λ0b→Λγ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of 1.7 fb−1 collected by the LHCb experiment at a center-of-mass energy of 13 TeV. Its branching fraction is measured exploiting the B0→K*0γ decay as a normalization mode and is found to be B(Λ0b→Λγ)=(7.1±1.5±0.6±0.7)×10−6, where the quoted uncertainties are statistical, systematic, and systematic from external inputs, respectively. This is the first observation of a radiative decay of a beauty baryon. |
Issue Date: | 15-Jul-2019 |
Date of Acceptance: | 31-May-2019 |
URI: | http://hdl.handle.net/10044/1/79943 |
DOI: | 10.1103/PhysRevLett.123.031801 |
ISSN: | 0031-9007 |
Publisher: | American Physical Society |
Journal / Book Title: | Physical Review Letters |
Volume: | 123 |
Issue: | 3 |
Copyright Statement: | © 2019 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
Keywords: | Science & Technology Physical Sciences Physics, Multidisciplinary Physics POLARIZATION TOOL Science & Technology Physical Sciences Physics, Multidisciplinary Physics POLARIZATION TOOL General Physics 01 Mathematical Sciences 02 Physical Sciences 09 Engineering |
Publication Status: | Published |
Open Access location: | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.031801 |
Article Number: | ARTN 031801 |
Appears in Collections: | Physics High Energy Physics |