Observation of $${{\varXi } ^0_{b}} \rightarrow {{\varXi } ^+_{c}} {{D} ^-_{s}} $$ and $${{\varXi } ^-_{b}} \rightarrow {{\varXi } ^0_{c}} {{D} ^-_{s}} $$ decays
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Published:2024-03-07
Issue:3
Volume:84
Page:
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ISSN:1434-6052
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Container-title:The European Physical Journal C
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language:en
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Short-container-title:Eur. Phys. J. C
Author:
, Aaij R.ORCID, Abdelmotteleb A. S. W.ORCID, Beteta C. Abellan, Abudinén F.ORCID, Ackernley T.ORCID, Adeva B.ORCID, Adinolfi M.ORCID, Adlarson P.ORCID, Afsharnia H., Agapopoulou C.ORCID, Aidala C. A.ORCID, Ajaltouni Z., Akar S.ORCID, Akiba K.ORCID, Albicocco P.ORCID, Albrecht J.ORCID, Alessio F.ORCID, Alexander M.ORCID, Albero A. AlfonsoORCID, Aliouche Z.ORCID, Cartelle P. AlvarezORCID, Amalric R.ORCID, Amato S.ORCID, Amey J. L.ORCID, Amhis Y.ORCID, An L.ORCID, Anderlini L.ORCID, Andersson M.ORCID, Andreianov A.ORCID, Andreola P.ORCID, Andreotti M.ORCID, Andreou D.ORCID, Ao D.ORCID, Archilli F.ORCID, Cuendis S. ArguedasORCID, Artamonov A.ORCID, Artuso M.ORCID, Aslanides E.ORCID, Atzeni M.ORCID, Audurier B.ORCID, Bacher D.ORCID, Perea I. BachillerORCID, Bachmann S.ORCID, Bachmayer M.ORCID, Back J. J.ORCID, Bailly-reyre A., Rodriguez P. BaladronORCID, Balagura V.ORCID, Baldini W.ORCID, de Souza Leite J. BaptistaORCID, Barbetti M.ORCID, Barbosa I. R.ORCID, Barlow R. 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CasaisORCID, Caspary R.ORCID, Casse G.ORCID, Cattaneo M.ORCID, Cavallero G.ORCID, Cavallini V.ORCID, Celani S.ORCID, Cerasoli J.ORCID, Cervenkov D.ORCID, Cesare S.ORCID, Chadwick A. J.ORCID, Chahrour I.ORCID, Chapman M. G., Charles M.ORCID, Charpentier Ph.ORCID, Barajas C. A. ChavezORCID, Chefdeville M.ORCID, Chen C.ORCID, Chen S.ORCID, Chernov A.ORCID, Chernyshenko S.ORCID, Chobanova V.ORCID, Cholak S.ORCID, Chrzaszcz M.ORCID, Chubykin A.ORCID, Chulikov V.ORCID, Ciambrone P.ORCID, Cicala M. F.ORCID, Vidal X. CidORCID, Ciezarek G.ORCID, Cifra P.ORCID, Clarke P. E. L.ORCID, Clemencic M.ORCID, Cliff H. V.ORCID, Closier J.ORCID, Cobbledick J. L.ORCID, Toapaxi C. CochaORCID, Coco V.ORCID, Cogan J.ORCID, Cogneras E.ORCID, Cojocariu L.ORCID, Collins P.ORCID, Colombo T.ORCID, Comerma-Montells A.ORCID, Congedo L.ORCID, Contu A.ORCID, Cooke N.ORCID, Corredoira I.ORCID, Correia A.ORCID, Corti G.ORCID, Meldrum J. J. Cottee, Couturier B.ORCID, Craik D. C.ORCID, Torres M. CruzORCID, Currie R.ORCID, Da Silva C. L.ORCID, Dadabaev S.ORCID, Dai L.ORCID, Dai X.ORCID, Dall’Occo E.ORCID, Dalseno J.ORCID, D’Ambrosio C.ORCID, Daniel J.ORCID, Danilina A.ORCID, d’Argent P.ORCID, Davidson A.ORCID, Davies J. E.ORCID, Davis A.ORCID, De Aguiar Francisco O.ORCID, De Angelis C., de Boer J.ORCID, De Bruyn K.ORCID, De Capua S.ORCID, De Cian M.ORCID, De Freitas Carneiro Da Graca U.ORCID, De Lucia E.ORCID, De Miranda J. M.ORCID, De Paula L.ORCID, De Serio M.ORCID, De Simone D.ORCID, De Simone P.ORCID, De Vellis F.ORCID, de Vries J. A.ORCID, Dean C. T.ORCID, Debernardis F.ORCID, Decamp D.ORCID, Dedu V.ORCID, Buono L. DelORCID, Delaney B.ORCID, Dembinski H.-P.ORCID, Deng J.ORCID, Denysenko V.ORCID, Deschamps O.ORCID, Dettori F.ORCID, Dey B.ORCID, Nezza P. DiORCID, Diachkov I.ORCID, Didenko S.ORCID, Ding S.ORCID, Dobishuk V.ORCID, Docheva A. D.ORCID, Dolmatov A., Dong C.ORCID, Donohoe A. M.ORCID, Dordei F.ORCID, Reis A. C. dosORCID, Douglas L., Downes A. G.ORCID, Duan W.ORCID, Duda P.ORCID, Dudek M. W.ORCID, Dufour L.ORCID, Duk V.ORCID, Durante P.ORCID, Duras M. M.ORCID, Durham J. M.ORCID, Dutta D.ORCID, Dziurda A.ORCID, Dzyuba A.ORCID, Easo S.ORCID, Eckstein E., Egede U.ORCID, Egorychev A.ORCID, Egorychev V.ORCID, Orro C. Eirea, Eisenhardt S.ORCID, Ejopu E.ORCID, Ek-In S.ORCID, Eklund L.ORCID, Elashri M.ORCID, Ellbracht J.ORCID, Ely S.ORCID, Ene A.ORCID, Epple E.ORCID, Escher S.ORCID, Eschle J.ORCID, Esen S.ORCID, Evans T.ORCID, Fabiano F.ORCID, Falcao L. N.ORCID, Fan Y.ORCID, Fang B.ORCID, Fantini L.ORCID, Faria M.ORCID, Farmer K.ORCID, Farry S.ORCID, Fazzini D.ORCID, Felkowski L.ORCID, Feng M.ORCID, Feo M.ORCID, Gomez M. FernandezORCID, Fernez A. D.ORCID, Ferrari F.ORCID, Lopes L. FerreiraORCID, Rodrigues F. FerreiraORCID, Sole S. FerreresORCID, Ferrillo M.ORCID, Ferro-Luzzi M.ORCID, Filippov S.ORCID, Fini R. A.ORCID, Fiorini M.ORCID, Firlej M.ORCID, Fischer K. M.ORCID, Fitzgerald D. S.ORCID, Fitzpatrick C.ORCID, Fiutowski T.ORCID, Fleuret F.ORCID, Fontana M.ORCID, Fontanelli F.ORCID, Foreman L. F.ORCID, Forty R.ORCID, Foulds-Holt D.ORCID, Sevilla M. FrancoORCID, Frank M.ORCID, Franzoso E.ORCID, Frau G.ORCID, Frei C.ORCID, Friday D. A.ORCID, Frontini L.ORCID, Fu J.ORCID, Fuehring Q.ORCID, Fujii Y.ORCID, Fulghesu T.ORCID, Gabriel E.ORCID, Galati G.ORCID, Galati M. D.ORCID, Torreira A. GallasORCID, Galli D.ORCID, Gambetta S.ORCID, Gandelman M.ORCID, Gandini P.ORCID, Gao H.ORCID, Gao R.ORCID, Gao Y.ORCID, Gao Y.ORCID, Gao Y., Garau M.ORCID, Martin L. M. GarciaORCID, Moreno P. GarciaORCID, Pardiñas J. GarcíaORCID, Plana B. Garcia, Rosales F. A. GarciaORCID, Garrido L.ORCID, Gaspar C.ORCID, Geertsema R. E.ORCID, Gerken L. L.ORCID, Gersabeck E.ORCID, Gersabeck M.ORCID, Gershon T.ORCID, Ghorbanimoghaddam Z., Giambastiani L.ORCID, Giasemis F. I.ORCID, Gibson V.ORCID, Giemza H. K.ORCID, Gilman A. L.ORCID, Giovannetti M.ORCID, Gioventù A.ORCID, Gironell P. GironellaORCID, Giugliano C.ORCID, Giza M. A.ORCID, Gizdov K.ORCID, Gkougkousis E. L.ORCID, Glaser F. C.ORCID, Gligorov V. V.ORCID, Göbel C.ORCID, Golobardes E.ORCID, Golubkov D.ORCID, Golutvin A.ORCID, Gomes A.ORCID, Fernandez S. GomezORCID, Abrantes F. GoncalvesORCID, Goncerz M.ORCID, Gong G.ORCID, Gooding J. A.ORCID, Gorelov I. V.ORCID, Gotti C.ORCID, Grabowski J. P.ORCID, Cardoso L. A. GranadoORCID, Graugés E.ORCID, Graverini E.ORCID, Grazette L.ORCID, Graziani G.ORCID, Grecu A. T.ORCID, Greeven L. M.ORCID, Grieser N. A.ORCID, Grillo L.ORCID, Gromov S.ORCID, Gu C.ORCID, Guarise M.ORCID, Guittiere M.ORCID, Guliaeva V.ORCID, Günther P. A.ORCID, Guseinov A.-K.ORCID, Gushchin E.ORCID, Guz Y.ORCID, Gys T.ORCID, Hadavizadeh T.ORCID, Hadjivasiliou C.ORCID, Haefeli G.ORCID, Haen C.ORCID, Haimberger J.ORCID, Haines S. C.ORCID, Hajheidari M., Halewood-leagas T.ORCID, Halvorsen M. M.ORCID, Hamilton P. 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R.ORCID, Mauri A.ORCID, Maurice E.ORCID, Mauricio J.ORCID, Mazurek M.ORCID, McCann M.ORCID, Mcconnell L.ORCID, McGrath T. H.ORCID, McHugh N. T.ORCID, McNab A.ORCID, McNulty R.ORCID, Meadows B.ORCID, Meier G.ORCID, Melnychuk D.ORCID, Merk M.ORCID, Merli A.ORCID, Garcia L. MeyerORCID, Miao D.ORCID, Miao H.ORCID, Mikhasenko M.ORCID, Milanes D. A.ORCID, Minotti A.ORCID, Minucci E.ORCID, Miralles T.ORCID, Mitchell S. E.ORCID, Mitreska B.ORCID, Mitzel D. S.ORCID, Modak A.ORCID, Mödden A.ORCID, Mohammed R. A.ORCID, Moise R. D.ORCID, Mokhnenko S.ORCID, Mombächer T.ORCID, Monk M.ORCID, Monroy I. A.ORCID, Monteil S.ORCID, Gomez A. MorcilloORCID, Morello G.ORCID, Morello M. J.ORCID, Morgenthaler M. P.ORCID, Moron J.ORCID, Morris A. B.ORCID, Morris A. G.ORCID, Mountain R.ORCID, Mu H.ORCID, Mu Z. M.ORCID, Muhammad E.ORCID, Muheim F.ORCID, Mulder M.ORCID, Müller K.ORCID, Mũnoz-Rojas F.ORCID, Murta R.ORCID, Naik P.ORCID, Nakada T.ORCID, Nandakumar R.ORCID, Nanut T.ORCID, Nasteva I.ORCID, Needham M.ORCID, Neri N.ORCID, Neubert S.ORCID, Neufeld N.ORCID, Neustroev P., Newcombe R., Nicolini J.ORCID, Nicotra D.ORCID, Niel E. M.ORCID, Nikitin N.ORCID, Nogga P., Nolte N. S.ORCID, Normand C.ORCID, Fernandez J. NovoaORCID, Nowak G.ORCID, Nunez C.ORCID, Nur H. N.ORCID, Oblakowska-Mucha A.ORCID, Obraztsov V.ORCID, Oeser T.ORCID, Okamura S.ORCID, Oldeman R.ORCID, Oliva F.ORCID, Olocco M.ORCID, Onderwater C. J. G.ORCID, O’Neil R. H.ORCID, Goicochea J. M. OtaloraORCID, Ovsiannikova T.ORCID, Owen P.ORCID, Oyanguren A.ORCID, Ozcelik O.ORCID, Padeken K. O.ORCID, Pagare B.ORCID, Pais P. R.ORCID, Pajero T.ORCID, Palano A.ORCID, Palutan M.ORCID, Panshin G.ORCID, Paolucci L.ORCID, Papanestis A.ORCID, Pappagallo M.ORCID, Pappalardo L. L.ORCID, Pappenheimer C.ORCID, Parkes C.ORCID, Passalacqua B.ORCID, Passaleva G.ORCID, Passaro D.ORCID, Pastore A.ORCID, Patel M.ORCID, Patoc J.ORCID, Patrignani C.ORCID, Pawley C. J.ORCID, Pellegrino A.ORCID, Altarelli M. PepeORCID, Perazzini S.ORCID, Pereima D.ORCID, Castro A. PereiroORCID, Perret P.ORCID, Perro A.ORCID, Petridis K.ORCID, Petrolini A.ORCID, Petrucci S.ORCID, Pham H.ORCID, Pica L.ORCID, Piccini M.ORCID, Pietrzyk B.ORCID, Pietrzyk G.ORCID, Pinci D.ORCID, Pisani F.ORCID, Pizzichemi M.ORCID, Placinta V.ORCID, Casasus M. PloORCID, Polci F.ORCID, Lener M. PoliORCID, Poluektov A.ORCID, Polukhina N.ORCID, Polyakov I.ORCID, Polycarpo E.ORCID, Ponce S.ORCID, Popov D.ORCID, Poslavskii S.ORCID, Prasanth K.ORCID, Promberger L.ORCID, Prouve C.ORCID, Pugatch V.ORCID, Puill V.ORCID, Punzi G.ORCID, Qi H. R.ORCID, Qian W.ORCID, Qin N.ORCID, Qu S.ORCID, Quagliani R.ORCID, Rachwal B.ORCID, Rademacker J. H.ORCID, Rama M.ORCID, García M. RamírezORCID, Pernas M. RamosORCID, Rangel M. 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SantamarinaORCID, Santimaria M.ORCID, Santoro L.ORCID, Santovetti E.ORCID, Saranin D.ORCID, Sarpis G.ORCID, Sarpis M.ORCID, Sarti A.ORCID, Satriano C.ORCID, Satta A.ORCID, Saur M.ORCID, Savrina D.ORCID, Sazak H.ORCID, Smead L. G. ScantleburyORCID, Scarabotto A.ORCID, Schael S.ORCID, Scherl S.ORCID, Schertz A. M.ORCID, Schiller M.ORCID, Schindler H.ORCID, Schmelling M.ORCID, Schmidt B.ORCID, Schmitt S.ORCID, Schneider O.ORCID, Schopper A.ORCID, Schulte N.ORCID, Schulte S.ORCID, Schune M. H.ORCID, Schwemmer R.ORCID, Schwering G.ORCID, Sciascia B.ORCID, Sciuccati A.ORCID, Sellam S.ORCID, Semennikov A.ORCID, Soares M. SenghiORCID, Sergi A.ORCID, Serra N.ORCID, Sestini L.ORCID, Seuthe A.ORCID, Shang Y.ORCID, Shangase D. M.ORCID, Shapkin M.ORCID, Shchemerov I.ORCID, Shchutska L.ORCID, Shears T.ORCID, Shekhtman L.ORCID, Shen Z.ORCID, Sheng S.ORCID, Shevchenko V.ORCID, Shi B.ORCID, Shields E. B.ORCID, Shimizu Y.ORCID, Shmanin E.ORCID, Shorkin R.ORCID, Shupperd J. D.ORCID, Siddi B. 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Abstract
AbstractThe $$\Xi _b^0 \rightarrow \Xi _c^+ D_s^-$$
Ξ
b
0
→
Ξ
c
+
D
s
-
and $$\Xi _b^- \rightarrow \Xi _c^0 D_s^-$$
Ξ
b
-
→
Ξ
c
0
D
s
-
decays are observed for the first time using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of $$\sqrt{s}=13\,\,\textrm{TeV}$$
s
=
13
TeV
, corresponding to an integrated luminosity of $$5.1\,\,\textrm{fb}^{-1}$$
5.1
fb
-
1
. The branching fractions times the production cross-sections of $$\Xi _b$$
Ξ
b
baryons relative to that of $$\Lambda _b^0$$
Λ
b
0
baryon are measured to be $$\begin{aligned} \mathcal {R}\left( \frac{\Xi _b^0}{\Lambda _b^0}\right)&\equiv \frac{\sigma \left( \Xi _b^0\right) }{\sigma \left( \Lambda _b^0\right) } \times \frac{\mathcal {B}\left( \Xi _b^0 \rightarrow \Xi _c^+ D_s^-\right) }{\mathcal {B}\left( \Lambda _b^0 \rightarrow \Lambda _c^0 D_s^-\right) }\\&=(15.8\pm 1.1\pm 0.6\pm 7.7)\%,\\ \mathcal {R}\left( \frac{\Xi _b^-}{\Lambda _b^0}\right)&\equiv \frac{\sigma \left( \Xi _b^-\right) }{\sigma \left( \Lambda _b^0\right) } \times \frac{\mathcal {B}\left( \Xi _b^- \rightarrow \Xi _c^0 D_s^-\right) }{\mathcal {B}\left( \Lambda _b^0 \rightarrow \Lambda _c^0 D_s^-\right) } \\&=(16.9\pm 1.3\pm 0.9\pm 4.3)\%, \end{aligned}$$
R
Ξ
b
0
Λ
b
0
≡
σ
Ξ
b
0
σ
Λ
b
0
×
B
Ξ
b
0
→
Ξ
c
+
D
s
-
B
Λ
b
0
→
Λ
c
0
D
s
-
=
(
15.8
±
1.1
±
0.6
±
7.7
)
%
,
R
Ξ
b
-
Λ
b
0
≡
σ
Ξ
b
-
σ
Λ
b
0
×
B
Ξ
b
-
→
Ξ
c
0
D
s
-
B
Λ
b
0
→
Λ
c
0
D
s
-
=
(
16.9
±
1.3
±
0.9
±
4.3
)
%
,
where the first uncertainties are statistical, the second systematic, and the third due to the uncertainties on the decay branching fractions of relevant charmed baryons. The masses of $$\Xi _b^0$$
Ξ
b
0
and $$\Xi _b^-$$
Ξ
b
-
baryons are measured to be $$m_{\Xi _b^0}=5791.12\pm 0.60\pm 0.45\pm 0.24\,\,\textrm{MeV}/c^2$$
m
Ξ
b
0
=
5791.12
±
0.60
±
0.45
±
0.24
MeV
/
c
2
and $$m_{\Xi _b^-}=5797.02\pm 0.63\pm 0.49\pm 0.29\,\,\textrm{MeV}/c^2$$
m
Ξ
b
-
=
5797.02
±
0.63
±
0.49
±
0.29
MeV
/
c
2
, where the uncertainties are statistical, systematic, and those due to charmed-hadron masses, respectively.
Publisher
Springer Science and Business Media LLC
Reference35 articles.
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