卡比博压低的两体强子衰变观测及Ωc0重子的精确质量测量
Observation of Cabibbo-Suppressed Two-Body Hadronic Decays and Precision Mass Measurement of the Ω_{c}^{0} Baryon.
作者信息
Aaij R, Abdelmotteleb A S W, Abellan Beteta C, Abudinén F, Ackernley T, Adeva B, Adinolfi M, Adlarson P, Afsharnia H, Agapopoulou C, Aidala C A, Ajaltouni Z, Akar S, Akiba K, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Aliouche Z, Alvarez Cartelle P, Amalric R, Amato S, Amey J L, Amhis Y, An L, Anderlini L, Andersson M, Andreianov A, Andreola P, Andreotti M, Andreou D, Ao D, Archilli F, Artamonov A, Artuso M, Aslanides E, Atzeni M, Audurier B, Bacher D, Bachiller Perea I, Bachmann S, Bachmayer M, Back J J, Bailly-Reyre A, Baladron Rodriguez P, Balagura V, Baldini W, Baptista de Souza Leite J, Barbetti M, Barbosa I R, Barlow R J, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels J M, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I B, Beiter A, Belin S, Bellee V, Belous K, Belov I, Belyaev I, Benane G, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Bernet Andres S, Berninghoff D, Bernstein H C, Bertella C, Bertolin A, Betancourt C, Betti F, Bex J, Bezshyiko Ia, Bhom J, Bian L, Bieker M S, Biesuz N V, Billoir P, Biolchini A, Birch M, Bishop F C R, Bitadze A, Bizzeti A, Blago M P, Blake T, Blanc F, Blank J E, Blusk S, Bobulska D, Bocharnikov V, Boelhauve J A, Boente Garcia O, Boettcher T, Bohare A, Boldyrev A, Bolognani C S, Bolzonella R, Bondar N, Borgato F, Borghi S, Borsato M, Borsuk J T, Bouchiba S A, Bowcock T J V, Boyer A, Bozzi C, Bradley M J, Braun S, Brea Rodriguez A, Breer N, Brodzicka J, Brossa Gonzalo A, Brown J, Brundu D, Buonaura A, Buonincontri L, Burke A T, Burr C, Bursche A, Butkevich A, Butter J S, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Cali S, Calvi M, Calvo Gomez M, Cambon Bouzas J, Campana P, Campora Perez D H, Campoverde Quezada A F, Capelli S, Capriotti L, Carbone A, Carcedo Salgado L, Cardinale R, Cardini A, Carniti P, Carus L, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Cavallini V, Celani S, Cerasoli J, Cervenkov D, Chadwick A J, Chahrour I, Chapman M G, Charles M, Charpentier Ph, Chavez Barajas C A, Chefdeville M, Chen C, Chen S, Chernov A, Chernyshenko S, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala M F, Cid Vidal X, Ciezarek G, Cifra P, Clarke P E L, Clemencic M, Cliff H V, Closier J, Cobbledick J L, Cocha Toapaxi C, Coco V, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Congedo L, Contu A, Cooke N, Corredoira I, Correia A, Corti G, Cottee Meldrum J J, Couturier B, Craik D C, Cruz Torres M, Currie R, Da Silva C L, Dadabaev S, Dai L, Dai X, Dall'Occo E, Dalseno J, D'Ambrosio C, Daniel J, Danilina A, d'Argent P, Davidson A, Davies J E, Davis A, De Aguiar Francisco O, de Boer J, De Bruyn K, De Capua S, De Cian M, De Freitas Carneiro Da Graca U, De Lucia E, De Miranda J M, De Paula L, De Serio M, De Simone D, De Simone P, De Vellis F, de Vries J A, Dean C T, Debernardis F, Decamp D, Dedu V, Del Buono L, Delaney B, Dembinski H-P, Denysenko V, Deschamps O, Dettori F, Dey B, Di Nezza P, Diachkov I, Didenko S, Ding S, Dobishuk V, Docheva A D, Dolmatov A, Dong C, Donohoe A M, Dordei F, Dos Reis A C, Douglas L, Downes A G, Duan W, Duda P, Dudek M W, Dufour L, Duk V, Durante P, Duras M M, Durham J M, Dutta D, Dziurda A, Dzyuba A, Easo S, Eckstein E, Egede U, Egorychev A, Egorychev V, Eirea Orro C, Eisenhardt S, Ejopu E, Ek-In S, Eklund L, Elashri M, Ellbracht J, Ely S, Ene A, Epple E, Escher S, Eschle J, Esen S, Evans T, Fabiano F, Falcao L N, Fan Y, Fang B, Fantini L, Faria M, Farmer K, Farry S, Fazzini D, Felkowski L, Feng M, Feo M, Fernandez Gomez M, Fernez A D, Ferrari F, Ferreira Lopes L, Ferreira Rodrigues F, Ferreres Sole S, Ferrillo M, Ferro-Luzzi M, Filippov S, Fini R A, Fiorini M, Firlej M, Fischer K M, Fitzgerald D S, Fitzpatrick C, Fiutowski T, Fleuret F, Fontana M, Fontanelli F, Foreman L F, Forty R, Foulds-Holt D, Franco Sevilla M, Frank M, Franzoso E, Frau G, Frei C, Friday D A, Frontini L, Fu J, Fuehring Q, Fujii Y, Fulghesu T, Gabriel E, Galati G, Galati M D, Gallas Torreira A, Galli D, Gambetta S, Gandelman M, Gandini P, Gao H, Gao R, Gao Y, Gao Y, Garau M, Garcia Martin L M, Garcia Moreno P, García Pardiñas J, Garcia Plana B, Garcia Rosales F A, Garrido L, Gaspar C, Geertsema R E, Gerken L L, Gersabeck E, Gersabeck M, Gershon T, Giambastiani L, Giasemis F I, Gibson V, Giemza H K, Gilman A L, Giovannetti M, Gioventù A, Gironella Gironell P, Giugliano C, Giza M A, Gizdov K, Gkougkousis E L, Glaser F C, Gligorov V V, Göbel C, Golobardes E, Golubkov D, Golutvin A, Gomes A, Gomez Fernandez S, Goncalves Abrantes F, Goncerz M, Gong G, Gooding J A, Gorelov I V, Gotti C, Grabowski J P, Granado Cardoso L A, Graugés E, Graverini E, Grazette L, Graziani G, Grecu A T, Greeven L M, Grieser N A, Grillo L, Gromov S, Gu C, Guarise M, Guittiere M, Guliaeva V, Günther P A, Guseinov A-K, Gushchin E, Guz Y, Gys T, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haimberger J, Haines S C, Hajheidari M, Halewood-Leagas T, Halvorsen M M, Hamilton P M, Hammerich J, Han Q, Han X, Hansmann-Menzemer S, Hao L, Harnew N, Harrison T, Hartmann M, Hasse C, Hatch M, He J, Heijhoff K, Hemmer F, Henderson C, Henderson R D L, Hennequin A M, Hennessy K, Henry L, Herd J, Heuel J, Hicheur A, Hill D, Hilton M, Hollitt S E, Horswill J, Hou R, Hou Y, Howarth N, Hu J, Hu J, Hu W, Hu X, Huang W, Huang X, Hulsbergen W, Hunter R J, Hushchyn M, Hutchcroft D, Ibis P, Idzik M, Ilin D, Ilten P, Inglessi A, Iniukhin A, Ishteev A, Ivshin K, Jacobsson R, Jage H, Jaimes Elles S J, Jakobsen S, Jans E, Jashal B K, Jawahery A, Jevtic V, Jiang E, Jiang X, Jiang Y, Jiang Y J, John M, Johnson D, Jones C R, Jones T P, Joshi S, Jost B, Jurik N, Juszczak I, Kaminaris D, Kandybei S, Kang Y, Karacson M, Karpenkov D, Karpov M, Kauniskangas A M, Kautz J W, Keizer F, Keller D M, Kenzie M, Ketel T, Khanji B, Kharisova A, Kholodenko S, Khreich G, Kirn T, Kirsebom V S, Kitouni O, Klaver S, Kleijne N, Klimaszewski K, Kmiec M R, Koliiev S, Kolk L, Kondybayeva A, Konoplyannikov A, Kopciewicz P, Kopecna R, Koppenburg P, Korolev M, Kostiuk I, Kot O, Kotriakhova S, Kozachuk A, Kravchenko P, Kravchuk L, Kreps M, Kretzschmar S, Krokovny P, Krupa W, Krzemien W, Kubat J, Kubis S, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kulikova E, Kupsc A, Kutsenko B K, Lacarrere D, Lafferty G, Lai A, Lampis A, Lancierini D, Landesa Gomez C, Lane J J, Lane R, Langenbruch C, Langer J, Lantwin O, Latham T, Lazzari F, Lazzeroni C, Le Gac R, Lee S H, Lefèvre R, Leflat A, Legotin S, Leroy O, Lesiak T, Leverington B, Li A, Li H, Li K, Li L, Li P, Li P-R, Li S, Li T, Li T, Li Y, Li Z, Lian Z, Liang X, Lin C, Lin T, Lindner R, Lisovskyi V, Litvinov R, Liu G, Liu H, Liu K, Liu Q, Liu S, Liu Y, Lobo Salvia A, Loi A, Lomba Castro J, Long T, Longstaff I, Lopes J H, Lopez Huertas A, López Soliño S, Lovell G H, Lu Y, Lucarelli C, Lucchesi D, Luchuk S, Lucio Martinez M, Lukashenko V, Luo Y, Lupato A, Luppi E, Lynch K, Lyu X-R, Ma R, Maccolini S, Machefert F, Maciuc F, Mackay I, Macko V, Madhan Mohan L R, Madurai M M, Maevskiy A, Maisuzenko D, Majewski M W, Malczewski J J, Malde S, Malecki B, Malinin A, Maltsev T, Manca G, Mancinelli G, Mancuso C, Manera Escalero R, Manuzzi D, Manzari C A, Marangotto D, Marchand J F, Marconi U, Mariani S, Marin Benito C, Marks J, Marshall A M, Marshall P J, Martelli G, Martellotti G, Martinazzoli L, Martinelli M, Martinez Santos D, Martinez Vidal F, Massafferri A, Materok M, Matev R, Mathad A, Matiunin V, Matteuzzi C, Mattioli K R, Mauri A, Maurice E, Mauricio J, Mazurek M, McCann M, Mcconnell L, McGrath T H, McHugh N T, McNab A, McNulty R, Meadows B, Meier G, Melnychuk D, Merk M, Merli A, Meyer Garcia L, Miao D, Miao H, Mikhasenko M, Milanes D A, Milovanovic M, Minard M-N, Minotti A, Minucci E, Miralles T, Mitchell S E, Mitreska B, Mitzel D S, Modak A, Mödden A, Mohammed R A, Moise R D, Mokhnenko S, Mombächer T, Monk M, Monroy I A, Monteil S, Morello G, Morello M J, Morgenthaler M P, Moron J, Morris A B, Morris A G, Mountain R, Mu H, Mu Z M, Muhammad E, Muheim F, Mulder M, Müller K, Murray D, Murta R, Naik P, Nakada T, Nandakumar R, Nanut T, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neustroev P, Newcombe R, Nicolini J, Nicotra D, Niel E M, Nieswand S, Nikitin N, Nogga P, Nolte N S, Normand C, Novoa Fernandez J, Nowak G, Nunez C, Nur H N, Oblakowska-Mucha A, Obraztsov V, Oeser T, Okamura S, Oldeman R, Oliva F, Olocco M, Onderwater C J G, O'Neil R H, Otalora Goicochea J M, Ovsiannikova T, Owen P, Oyanguren A, Ozcelik O, Padeken K O, Pagare B, Pais P R, Pajero T, Palano A, Palutan M, Panshin G, Paolucci L, Papanestis A, Pappagallo M, Pappalardo L L, Pappenheimer C, Parkes C, Passalacqua B, Passaleva G, Pastore A, Patel M, Patoc J, Patrignani C, Pawley C J, Pellegrino A, Pepe Altarelli M, Perazzini S, Pereima D, Pereiro Castro A, Perret P, Perro A, Petridis K, Petrolini A, Petrucci S, Pham H, Philippov A, Pica L, Piccini M, Pietrzyk B, Pietrzyk G, Pinci D, Pisani F, Pizzichemi M, Placinta V, Plo Casasus M, Polci F, Poli Lener M, Poluektov A, Polukhina N, Polyakov I, Polycarpo E, Ponce S, Popov D, Poslavskii S, Prasanth K, Promberger L, Prouve C, Pugatch V, Puill V, Punzi G, Qi H R, Qian W, Qin N, Qu S, Quagliani R, Rachwal B, Rademacker J H, Rajagopalan R, Rama M, Ramírez García M, Ramos Pernas M, Rangel M S, Ratnikov F, Raven G, Rebollo De Miguel M, Redi F, Reich J, Reiss F, Ren Z, Resmi P K, Ribatti R, Ricart G R, Ricciardi S, Richardson K, Richardson-Slipper M, Rinnert K, Robbe P, Robertson G, Rodrigues E, Rodriguez Fernandez E, Rodriguez Lopez J A, Rodriguez Rodriguez E, Rolf D L, Rollings A, Roloff P, Romanovskiy V, Romero Lamas M, Romero Vidal A, Ronchetti F, Rotondo M, Rudolph M S, Ruf T, Ruiz Fernandez R A, Ruiz Vidal J, Ryzhikov A, Ryzka J, Saborido Silva J J, Sagidova N, Sahoo N, Saitta B, Salomoni M, Sanchez Gras C, Sanderswood I, Santacesaria R, Santamarina Rios C, Santimaria M, Santoro L, Santovetti E, Saranin D, Sarpis G, Sarpis M, Sarti A, Satriano C, 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机构信息
Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
Department of Physics, University of Warwick, Coventry, United Kingdom.
出版信息
Phys Rev Lett. 2024 Feb 23;132(8):081802. doi: 10.1103/PhysRevLett.132.081802.
The first observation of the singly Cabibbo-suppressed Ω_{c}^{0}→Ω^{-}K^{+} and Ω_{c}^{0}→Ξ^{-}π^{+} decays is reported, using proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb^{-1}, collected with the LHCb detector between 2016 and 2018. The branching fraction ratios are measured to be B(Ω_{c}^{0}→Ω^{-}K^{+})/B(Ω_{c}^{0}→Ω^{-}π^{+})=[6.08±0.51(stat)±0.40(syst)]%,B(Ω_{c}^{0}→Ξ^{-}π^{+})/B(Ω_{c}^{0}→Ω^{-}π^{+})=[15.81±0.87(stat)±0.44(syst)±0.16(ext)]%. In addition, using the Ω_{c}^{0}→Ω^{-}π^{+} decay channel, the Ω_{c}^{0} baryon mass is measured to be M(Ω_{c}^{0})=2695.28±0.07(stat)±0.27(syst)±0.30(ext) MeV, improving the precision of the previous world average by a factor of 4.
报道了对单卡比博压低的Ωₑ⁰→Ω⁻K⁺和Ωₑ⁰→Ξ⁻π⁺衰变的首次观测，使用了质心能量为13 TeV的质子-质子碰撞数据，对应于2016年至2018年期间用大型强子对撞机底夸克探测器收集的5.4 fb⁻¹的积分亮度。测得的分支比为B(Ωₑ⁰→Ω⁻K⁺)/B(Ωₑ⁰→Ω⁻π⁺)=[6.08±0.51(统计)±0.40(系统)]%，B(Ωₑ⁰→Ξ⁻π⁺)/B(Ωₑ⁰→Ω⁻π⁺)=[15.81±0.87(统计)±0.44(系统)±0.16(外部)]%。此外，利用Ωₑ⁰→Ω⁻π⁺衰变道，测得Ωₑ⁰重子质量为M(Ωₑ⁰)=2695.28±0.07(统计)±0.27(系统)±0.30(外部) MeV，将之前的世界平均值精度提高了4倍。
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