+K*%28892%29+photon%22&type=SU">B0 --> K*(892) photon, Lambda , hep-ex , K*(892) , Lambda/b0 --> Lambda photon , LHC-B , radiative decay [Lambda/b0] , baryon , CERN LHC Coll , Lambda/b0: branching ratio: measured , Elementary Particles and Fields , High Energy Physics::Experiment , colliding beams [p p] , B0: radiative decay , statistical , p p: colliding beams , Lambda/b0: radiative decay , Particle Physics - Experiment , experimental results
Popis:
The radiative decay $\Lambda_{b}^{0} \to \Lambda \gamma$ 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 $B^{0} \to K^{*0} \gamma$ decay as a normalization mode and is found to be $\mathcal{B}(\Lambda_{b}^{0} \to \Lambda \gamma)= (7.1 \pm 1.5 \pm 0.6 \pm 0.7) \times 10^{-6}$, 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.https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-010.html
Jazyk:
English
DOI:
10.1103/PhysRevLett.123.031801⟩
DOI:
10.1103/PhysRevLett.123.031801
Přístupová URL adresa:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f0c1b81aab7d71c872232d17b934708 http://cds.cern.ch/record/2671996
Rights:
OPEN
Přírůstkové číslo:
edsair.doi.dedup.....7f0c1b81aab7d71c872232d17b934708
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Autor:
Aaij, Roel , Abellán Beteta, Carlos , Alexander, Michael , Burr, Christopher , Bursche, Albert , Butter, Jordy Sebastiaan , Buytaert, Jan , Byczynski, Wiktor , Cadeddu, Sandro , Cai, Hao , Calabrese, Roberto , Cali, Stefano , Calladine, Ryan , Alfonso Albero, Alejandro , Calvi, Marta , Calvo Gomez, Miriam , Camboni, Alessandro , Campana, Pierluigi , Campora Perez, Daniel , Capriotti, Lorenzo , Carbone, Angelo , Carboni, Giovanni , Cardinale, Roberta , Cardini, Alessandro , Alkhazov, Georgy , Carniti, Paolo , Carvalho Akiba, Kazuyoshi , Casse, Gianluigi , Cattaneo, Marco , Cavallero, Giovanni , Cenci, Riccardo , Chapman, Matthew George , Charles, Matthew , Charpentier, Philippe , Chatzikonstantinidis, Georgios , Alvarez Cartelle, Paula , Chefdeville, Maximilien , Chekalina, Viktoriia , Chen, Chen , Chen, Shanzhen , Chitic, Stefan-Gabriel , Chobanova, Veronika , Chrzaszcz, Marcin , Chubykin, Alexsei , Ciambrone, Paolo , Cid Vidal, Xabier , Alves Jr., Antonio Augusto , Ciezarek, Gregory , Cindolo, Federico , Clarke, Peter , Clemencic, Marco , Cliff, Harry , Closier, Joel , Coco, Victor , Coelho, Joao A. B. , Cogan, Julien , Cogneras, Eric , Amato, Sandra , Cojocariu, Lucian , Collins, Paula , Colombo, Tommaso , Comerma-Montells, Albert , Contu, Andrea , Coombs, George , Coquereau, Samuel , Corti, Gloria , Costa Sobral, Cayo Mar , Couturier, Benjamin , Amhis, Yasmine , Cowan, Greig , Craik, Daniel Charles , Crocombe, Andrew , Cruz Torres, Melissa Maria , Currie, Robert , Da Silva, Cesar Luiz , Dall'Occo, Elena , Dalseno, Jeremy , D'Ambrosio, Carmelo , Danilina, Anna , An, Liupan , d'Argent, Philippe , Davis, Adam , De Aguiar Francisco, Oscar , De Bruyn, Kristof , De Capua, Stefano , De Cian, Michel , De Miranda, Jussara M. , De Paula, Leandro , De Serio, Marilisa , De Simone, Patrizia , Anderlini, Lucio , de Vries, Jacco , Dean, Cameron Thomas , Dean, William , Decamp, Daniel , Del Buono, Luigi , Delaney, Blaise , Dembinski, Hans Peter , Demmer, Moritz , Dendek, Adam , Derkach, Denis , Andreassi, Guido , Deschamps, Olivier , Desse, Fabrice , Dettori, Francesco , Dey, Biplab , Di Canto, Angelo , Di Nezza, Pasquale , Didenko, Sergey , Dijkstra, Hans , Dordei, Francesca , Dorigo, Mirco , Adeva, Bernardo , Andreotti, Mirco , dos Reis, Alberto C. , Dosil Suárez, Alvaro , Douglas, Lauren , Dovbnya, Anatoliy , Dreimanis, Karlis , Dufour, Laurent , Dujany, Giulio , Durante, Paolo , Durham, John Matthew , Dutta, Deepanwita , Andrews, Jason , Dzhelyadin, Rustem , Dziewiecki, Michal , Dziurda, Agnieszka , Dzyuba, Alexey , Easo, Sajan , Egede, Ulrik , Egorychev, Victor , Eidelman, Semen , Eisenhardt, Stephan , Eitschberger, Ulrich , Archilli, Flavio , Ekelhof, Robert , Eklund, Lars , Ely, Scott , Ene, Alexandru , Escher, Stephan , Esen, Sevda , Evans, Timothy , Falabella, Antonio , Färber, Christian , Farley, Nathanael , Arnau Romeu, Joan , Farry, Stephen , Fazzini, Davide , Féo, Mauricio , Fernandez Declara, Placido , Fernandez Prieto, Antonio , Ferrari, Fabio , Ferreira Lopes, Lino , Ferreira Rodrigues, Fernando , Ferreres Sole, Silvia , Ferro-Luzzi, Massimiliano , Artamonov, Alexander , Filippov, Sergey , Fini, Rosa Anna , Fiorini, Massimiliano , Firlej, Miroslaw , Fitzpatrick, Conor , Fiutowski, Tomasz , Fleuret, Frederic , Fontana, Marianna , Fontanelli, Flavio , Forty, Roger , Artuso, Marina , Franco Lima, Vinicius , Frank, Markus , Frei, Christoph , Fu, Jinlin , Funk, Wolfgang , Gabriel, Emmy , Gallas Torreira, Abraham , Galli, Domenico , Gallorini, Stefano , Gambetta, Silvia , Arzymatov, Kenenbek , Gan, Yuyue , Gandelman, Miriam , Gandini, Paolo , Gao, Yuanning , Garcia Martin, Luis Miguel , García Pardiñas, Julián , Garcia Plana, Beatriz , Garra Tico, Jordi , Garrido, Lluis , Gascon, David , Aslanides, Elie , Gaspar, Clara , Gazzoni, Giulio , Gerick, David , Gersabeck, Evelina , Gersabeck, Marco , Gershon, Timothy , Gerstel, Dawid , Ghez, Philippe , Gibson, Valerie , Girard, Olivier Göran , Atzeni, Michele , Gironella Gironell, Pere , Giubega, Lavinia-Helena , Gizdov, Konstantin , Gligorov, Vladimir , Göbel, Carla , Golubkov, Dmitry , Golutvin, Andrey , Gomes, Alvaro , Gorelov, Igor Vladimirovich , Gotti, Claudio , Audurier, Benjamin , Govorkova, Ekaterina , Grabowski, Jascha Peter , Graciani Diaz, Ricardo , Granado Cardoso, Luis Alberto , Graugés, Eugeni , Graverini, Elena , Graziani, Giacomo , Grecu, Alexandru , Greim, Roman , Griffith, Peter , Adinolfi, Marco , Bachmann, Sebastian , Grillo, Lucia , Gruber, Lukas , Gruberg Cazon, Barak Raimond , Gu, Chenxi , Gushchin, Evgeny , Güth, Andreas , Guz, Yury , Gys, Thierry , Hadavizadeh, Thomas , Hadjivasiliou, Christos , Back, John , Haefeli, Guido , Haen, Christophe , Haines, Susan , Hamilton, Brian , Han, Qundong , Han, Xiaoxue , Hancock, Thomas Henry , Hansmann-Menzemer, Stephanie , Harnew, Neville , Harrison, Thomas , Baker, Sophie , Hasse, Christoph , Hatch, Mark , He, Jibo , Hecker, Malte , Heinicke, Kevin , Heister, Arno , Hennessy, Karol , Henry, Louis , Heß, Miriam , Heuel, Johannes , Balagura, Vladislav , Hicheur, Adlène , Hidalgo Charman, Raoul , Hill, Donal , Hilton, Martha , Hopchev, Plamen Hristov , Hu, Jiangqiao , Hu, Wenhua , Huang, Wenqian , Huard, Zachary , Hulsbergen, Wouter , Baldini, Wander , Humair, Thibaud , Hushchyn, Mikhail , Hutchcroft, David , Hynds, Daniel , Ibis, Philipp , Idzik, Marek , Ilten, Philip , Inglessi, Alexander , Inyakin, Alexander , Ivshin, Kuzma , Baranov, Alexander , Jacobsson, Richard , Jakobsen, Sune , Jalocha, Pawel , Jans, Eddy , Jashal, Brij Kishor , Jawahery, Abolhassan , Jiang, Feng , John, Malcolm , Johnson, Daniel , Jones, Christopher , Barlow, Roger , Joram, Christian , Jost, Beat , Jurik, Nathan , Kandybei, Sergii , Karacson, Matthias , Kariuki, James Mwangi , Karodia, Sarah , Kazeev, Nikita , Kecke, Matthieu , Keizer, Floris , Barsuk, Sergey , Kelsey, Matthew , Kenzie, Matthew , Ketel, Tjeerd , Khanji, Basem , Kharisova, Anastasiia , Khurewathanakul, Chitsanu , Kim, Kyung Eun , Kirn, Thomas , Kirsebom, Veronica Soelund , Klaver, Suzanne , Barter, William , Klimaszewski, Konrad , Koliiev, Serhii , Kolpin, Michael , Kopecna, Renata , Koppenburg, Patrick , Kostiuk, Igor , Kot, Oleksander , Kotriakhova, Sofia , Kozeiha, Mohamad , Kravchuk, Leonid , Bartolini, Matteo , Kreps, Michal , Kress, Felix Johannes , Kretzschmar, Sophie Katharina , Krokovny, Pavel , Krupa, Wojciech , Krzemien, Wojciech , Kucewicz, Wojciech , Kucharczyk, Marcin , Kudryavtsev, Vasily , Kunde, Gerd Joachim , Aidala, Christine Angela , Baryshnikov, Fedor , Kuonen, Axel Kevin , Kvaratskheliya, Tengiz , Lacarrere, Daniel , Lafferty, George , Lai, Adriano , Lancierini, Davide , Lanfranchi, Gaia , Langenbruch, Christoph Michael , Latham, Thomas , Lazzeroni, Cristina , Batozskaya, Varvara , Le Gac, Renaud , Lefèvre, Regis , Leflat, Alexander , Lemaitre, Florian , Leroy, Olivier , Lesiak, Tadeusz , Leverington, Blake , Li, Hengne , Li, Pei-Rong , Li, Xuan , Batsukh, Baasansuren , Li, Yiming , Li, Zhuoming , Liang, Xixin , Likhomanenko, Tatiana , Lindner, Rolf , Lionetto, Federica , Lisovskyi, Vitalii , Liu, Guoming , Liu, Xuesong , Loh, David , Battig, Alexander , Loi, Angelo , Longstaff, Iain , Lopes, Jose , Loustau, Guillermo , Lovell, George Holger , Lucchesi, Donatella , Lucio Martinez, Miriam , Luo, Yiheng , Lupato, Anna , Luppi, Eleonora , Battista, Vincenzo , Lupton, Oliver , Lusiani, Alberto , Lyu, Xiao-Rui , Machefert, Frederic , Maciuc, Florin , Macko, Vladimir , Mackowiak, Patrick , Maddrell-Mander, Samuel , Maev, Oleg , Maguire, Kevin , Bay, Aurelio , Maisuzenko, Dmitrii , Majewski, Maciej Witold , Malde, Sneha , Malecki, Bartosz , Malinin, Alexander , Maltsev, Timofei , Malygina, Hanna , Manca, Giulia , Mancinelli, Giampiero , Marangotto, Daniele , Bedeschi, Franco , Maratas, Jan , Marchand, Jean François , Marconi, Umberto , Marin Benito, Carla , Marinangeli, Matthieu , Marino, Pietro , Marks, Jörg , Marshall, Phillip John , Martellotti, Giuseppe , Martinelli, Maurizio , Bediaga, Ignacio , Martinez Santos, Diego , Martinez Vidal, Fernando , Massafferri, André , Materok, Marcel , Matev, Rosen , Mathad, Abhijit , Mathe, Zoltan , Matiunin, Viacheslav , Matteuzzi, Clara , Mattioli, Kara Renee , Beiter, Andrew , Mauri, Andrea , Maurice, Emilie , Maurin, Brice , McCann, Michael , McNab, Andrew , McNulty, Ronan , Mead, James Vincent , Meadows, Brian , Meaux, Cedric , Meinert, Nis , Bel, Lennaert , Melnychuk, Dmytro , Merk, Marcel , Merli, Andrea , Michielin, Emanuele , Milanes, Diego Alejandro , Millard, Edward James , Minard, Marie-Noelle , Minzoni, Luca , Mitzel, Dominik Stefan , Mödden, Antje , Ajaltouni, Ziad , Belin, Samuel , Mogini, Andrea , Moise, Razvan Daniel , Mombächer, Titus , Monroy, Igancio Alberto , Monteil, Stephane , Morandin, Mauro , Morello, Gianfranco , Morello, Michael Joseph , Moron, Jakub , Morris, Adam Benjamin , Beliy, Nikita , Mountain, Raymond , Muheim, Franz , Mukherjee, Maitreyee , Mulder, Mick , Müller, Dominik , Müller, Janine , Müller, Katharina , Müller, Vanessa , Murphy, Colm Harold , Murray, Donal , Bellee, Violaine , Naik, Paras , Nakada, Tatsuya , Nandakumar, Raja , Nandi, Anita , Nanut, Tara , Nasteva, Irina , Needham, Matthew , Neri, Nicola , Neubert, Sebastian , Neufeld, Niko , Belloli, Nicoletta , Newcombe, Ryan , Nguyen, Thi Dung , Nguyen-Mau, Chung , Nieswand, Simon , Niet, Ramon , Nikitin, Nikolay , Nolte, Niklas Stefan , Oblakowska-Mucha, Agnieszka , Obraztsov, Vladimir , Ogilvy, Stephen , Belous, Konstantin , O'Hanlon, Daniel Patrick , Oldeman, Rudolf , Onderwater, Gerco , Osborn, Joseph Daniel , Ossowska, Anna , Otalora Goicochea, Juan Martin , Ovsiannikova, Tatiana , Owen, Patrick , Oyanguren, Maria Aranzazu , Pais, Preema Rennee , Belyaev, Ivan , Pajero, Tommaso , Palano, Antimo , Palutan, Matteo , Panshin, Gennady , Papanestis, Antonios , Pappagallo, Marco , Pappalardo, Luciano , Parker, William , Parkes, Christopher , Passaleva, Giovanni , Bencivenni, Giovanni , Pastore, Alessandra , Patel, Mitesh , Patrignani, Claudia , Pearce, Alex , Pellegrino, Antonio , Penso, Gianni , Pepe Altarelli, Monica , Perazzini, Stefano , Pereima, Dmitrii , Perret, Pascal , Ben-Haim, Eli , Pescatore, Luca , Petridis, Konstantinos , Petrolini, Alessandro , Petrov, Aleksandr , Petrucci, Stefano , Petruzzo, Marco , Pietrzyk, Boleslaw , Pietrzyk, Guillaume , Pikies, Malgorzata , Pili, Martina , Benson, Sean , Pinci, Davide , Pinzino, Jacopo , Pisani, Flavio , Piucci, Alessio , Placinta, Vlad-Mihai , Playfer, Stephen , Plews, Jonathan , Plo Casasus, Maximo , Polci, Francesco , Poli Lener, Marco , Beranek, Sarah , Poliakova, Mariia , Poluektov, Anton , Polukhina, Natalia , Polyakov, Ivan , Polycarpo, Erica , Pomery, Gabriela Johanna , Ponce, Sebastien , Popov, Alexander , Popov, Dmitry , Poslavskii, Stanislav , Akar, Simon , Berezhnoy, Alexander , Price, Eugenia , Prouve, Claire , Pugatch, Valery , Puig Navarro, Albert , Pullen, Hannah Louise , Punzi, Giovanni , Qian, Wenbin , Qin, Jia-Jia , Quagliani, Renato , Quintana, Boris , Bernet, Roland , Raab, Naomi Veronika , Rachwal, Bartlomiej , Rademacker, Jonas , Rama, Matteo , Ramos Pernas, Miguel , Rangel, Murilo , Ratnikov, Fedor , Raven, Gerhard , Ravonel Salzgeber, Melody , Reboud, Meril , Berninghoff, Daniel , Redi, Federico , Reichert, Stefanie , Reiss, Florian , Remon Alepuz, Clara , Ren, Zan , Renaudin, Victor , Ricciardi, Stefania , Richards, Sophie , Rinnert, Kurt , Robbe, Patrick , Bertholet, Emilie , Robert, Arnaud , Rodrigues, Ana Barbara , Rodrigues, Eduardo , Rodriguez Lopez, Jairo Alexis , Roehrken, Markus , Roiser, Stefan , Rollings, Alexandra Paige , Romanovskiy, Vladimir , Romero Vidal, Antonio , Roth, Jordan Daniel , Bertolin, Alessandro , Rotondo, Marcello , Rudolph, Matthew Scott , Ruf, Thomas , Ruiz Vidal, Joan , Saborido Silva, Juan Jose , Sagidova, Naylya , Saitta, Biagio , Salustino Guimaraes, Valdir , Sanchez Gras, Cristina , Sanchez Mayordomo, Carlos , Betancourt, Christopher , Sanmartin Sedes, Brais , Santacesaria, Roberta , Santamarina Rios, Cibran , Santimaria, Marco , Santovetti, Emanuele , Sarpis, Gediminas , Sarti, Alessio , Satriano, Celestina , Satta, Alessia , Saur, Miroslav , Betti, Federico , Savrina, Darya , Schael, Stefan , Schellenberg, Margarete , Schiller, Manuel , Schindler, Heinrich , Schmelling, Michael , Schmelzer, Timon , Schmidt, Burkhard , Schneider, Olivier , Schopper, Andreas , Bettler, Marc-Olivier , Schreiner, H. F. , Schubiger, Maxime , Schulte, Sebastian , Schune, Marie Helene , Schwemmer, Rainer , Sciascia, Barbara , Sciubba, Adalberto , Semennikov, Alexander , Sepulveda, Eduardo Enrique , Sergi, Antonino , Bezshyiko, Iaroslava , Serra, Nicola , Serrano, Justine , Sestini, Lorenzo , Seuthe, Alex , Seyfert, Paul , Shapkin, Mikhail , Shears, Tara , Shekhtman, Lev , Shevchenko, Vladimir , Shmanin, Evgenii , Bhasin, Srishti , Siddi, Benedetto Gianluca , Silva Coutinho, Rafael , Silva de Oliveira, Luiz Gustavo , Simi, Gabriele , Simone, Saverio , Skiba, Igor , Skidmore, Nicola , Skwarnicki, Tomasz , Slater, Mark , Smeaton, John Gordon , Albicocco, Pietro , Bhom, Jihyun , Smith, Eluned , Smith, Iwan Thomas , Smith, Mark , Soares, Marcelo , Soares Lavra, Lais , Sokoloff, Michael , Soler, Paul , Souza De Paula, Bruno , Spaan, Bernhard , Spadaro Norella, Elisabetta , Bieker, Martin Stefan , Spradlin, Patrick , Stagni, Federico , Stahl, Marian , Stahl, Sascha , Stefko, Pavol , Stefkova, Slavomira , Steinkamp, Olaf , Stemmle, Simon , Stenyakin, Oleg , Stepanova, Margarita , Bifani, Simone , Stevens, Holger , Stocchi, Achille , Stone, Sheldon , Stracka, Simone , Stramaglia, Maria Elena , Straticiuc, Mihai , Straumann, Ulrich , Strokov, Sergey , Sun, Jiayin , Sun, Liang , Billoir, Pierre , Sun, Yipeng , Swientek, Krzysztof , Szabelski, Adam , Szumlak, Tomasz , Szymanski, Maciej Pawel , Tang, Zhipeng , Tekampe, Tobias , Tellarini, Giulia , Teubert, Frederic , Thomas, Eric , Birnkraut, Alex , Tilley, Matthew James , Tisserand, Vincent , T'Jampens, Stephane , Tobin, Mark , Tolk, Siim , Tomassetti, Luca , Tonelli, Diego , Tou, Da Yu , Tourinho Jadallah Aoude, Rafael , Tournefier, Edwige , Bizzeti, Andrea , Traill, Murdo , Tran, Minh Tâm , Trisovic, Ana , Tsaregorodtsev, Andrei , Tuci, Giulia , Tully, Alison , Tuning, Niels , Ukleja, Artur , Usachov, Andrii , Ustyuzhanin, Andrey , Bjørn, Mikkel , Uwer, Ulrich , Vagner, Alexander , Vagnoni, Vincenzo , Valassi, Andrea , Valat, Sebastien , Valenti, Giovanni , van Beuzekom, Martinus , Van Hecke, Hubert , van Herwijnen, Eric , Van Hulse, Charlotte Barbara , Blago, Michele Piero , van Tilburg, Jeroen , van Veghel, Maarten , Vasiliev, Alexander , Vazquez Gomez, Ricardo , Vazquez Regueiro, Pablo , Vázquez Sierra, Carlos , Vecchi, Stefania , Velthuis, Jaap , Veltri, Michele , Venkateswaran, Aravindhan , Blake, Thomas , Vernet, Maxime , Veronesi, Michele , Vesterinen, Mika , Viana Barbosa, Joao Vitor , Vieira, Daniel , Vieites Diaz, Maria , Viemann, Harald , Vilasis-Cardona, Xavier , Vitkovskiy, Arseniy , Vitti, Marcela , Blanc, Frederic , Volkov, Vladimir , Vollhardt, Achim , Vom Bruch, Dorothea , Voneki, Balazs , Vorobyev, Alexey , Vorobyev, Vitaly , Voropaev, Nikolai , Waldi, Roland , Walsh, John , Wang, Jianchun , Albrecht, Johannes , Blusk, Steven , Wang, Mengzhen , Wang, Yilong , Wang, Zhenzi , Ward, David , Wark, Heather Mckenzie , Watson, Nigel , Websdale, David , Weiden, Andreas , Weisser, Constantin , Whitehead, Mark , Bobulska, Dana , Wilkinson, Guy , Wilkinson, Michael , Williams, Ifan , Williams, Mike , Williams, Mark Richard James , Williams, Timothy , Wilson, Fergus , Winn, Michael Andreas , Wislicki, Wojciech , Witek, Mariusz , Bocci, Valerio , Wormser, Guy , Wotton, Stephen , Wyllie, Kenneth , Xiao, Dong , Xie, Yuehong , Xing, Hongxi , Xu, Ao , Xu, Menglin , Xu, Qingnian , Xu, Zhirui , Boente Garcia, Oscar , Xu, Zehua , Yang, Zhenwei , Yang, Zishuo , Yao, Yuezhe , Yeomans, Lauren Emma , Yin, Hang , Yu, Jiesheng , Yuan, Xuhao , Yushchenko, Oleg , Zarebski, Kristian Alexander , Boettcher, Thomas , Zavertyaev, Mikhail , Zeng, Ming , Zhang, Dongliang , Zhang, Liming , Zhang, Wen Chao , Zhang, Yanxi , Zhelezov, Alexey , Zheng, Yangheng , Zhu, Xianglei , Zhukov, Valery , Bondar, Alexander , Zonneveld, Jennifer Brigitta , Zucchelli, Stefano , LHCb Collaboration , Bondar, Nikolay , Borghi, Silvia , Borisyak, Maxim , Borsato, Martino , Alessio, Federico , Boubdir, Meriem , Bowcock, Themistocles , Bozzi, Concezio , Braun, Svende , Brodski, Michael , Brodzicka, Jolanta , Brossa Gonzalo, Arnau , Brundu, Davide , Buchanan, Emma , Buonaura, Annarita
Přispěvatelé:
Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), LHCb, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), ANR-17-CE31-0003,BACH,Ouverture d'une fenetre sur la Nouvelle Physique grace aux baryons dans LHCb}(2017)
Jazyk:
angličtina
Rok vydání:
2019
Předmět:
Zdroj:
Phys.Rev.Lett.
DOI:
10.1103/PhysRevLett.123.031801⟩
Popis:
The radiative decay $\Lambda_{b}^{0} \to \Lambda \gamma$ 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 $B^{0} \to K^{*0} \gamma$ decay as a normalization mode and is found to be $\mathcal{B}(\Lambda_{b}^{0} \to \Lambda \gamma)= (7.1 \pm 1.5 \pm 0.6 \pm 0.7) \times 10^{-6}$, 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.
Databáze:
OpenAIRE
Externí odkaz:
