Measurement of the mass difference and relative production rate of the Ωb- and Ξb- baryons

被引：2

作者：

Aaij, R. ^{[32
]}

Abdelmotteleb, A. S. W. ^{[50
]}

Beteta, C. Abellan ^{[44
]}

Abudinen, F. ^{[50
]}

Ackernley, T. ^{[54
]}

Adeva, B. ^{[40
]}

Adinolfi, M. ^{[48
]}

Adlarson, P. ^{[74
]}

Afsharnia, H. ^{[9
]}

Agapopoulou, C. ^{[13
]}

Aidala, C. A. ^{[75
]}

Ajaltouni, Z. ^{[9
]}

Akar, S. ^{[59
]}

Akiba, K. ^{[32
]}

Albicocco, P. ^{[23
]}

Albrecht, J. ^{[15
]}

Alessio, F. ^{[42
]}

Alexander, M. ^{[53
]}

Albero, A. Alfonso ^{[39
]}

Aliouche, Z. ^{[56
]}

Cartelle, P. Alvarez ^{[49
]}

Amalric, R. ^{[13
]}

Amato, S. ^{[2
]}

Amey, J. L. ^{[48
]}

Amhis, Y. ^{[11
,42
]}

An, L. ^{[42
]}

Anderlini, L. ^{[22
]}

Andersson, M. ^{[44
]}

Andreianov, A. ^{[37
]}

Andreotti, M. ^{[21
]}

Andreou, D. ^{[62
]}

Ao, D. ^{[6
,89
]}

Archilli, F. ^{[31
,76
]}

Artamonov, A. ^{[37
]}

Artuso, M. ^{[62
]}

Aslanides, E. ^{[10
]}

Atzeni, M. ^{[44
]}

Audurier, B. ^{[12
]}

Perea, I. Bachiller ^{[8
]}

Bachmann, S. ^{[17
]}

Bachmayer, M. ^{[43
]}

Back, J. J. ^{[50
]}

Rodriguez, P. Baladron ^{[40
]}

Balagura, V. ^{[12
]}

Baldini, W. ^{[21
,42
]}

Leite, J. Baptista de Souza ^{[1
]}

Barbetti, M. ^{[22
,77
]}

Barlow, R. J. ^{[56
]}

Barsuk, S. ^{[11
]}

Barter, W. ^{[52
]}

机构：

[1] Ctr Brasileiro Pesquisas Fis CBPF, Rio De Janeiro, Brazil

[2] Univ Fed Rio De Janeiro UFRJ, Rio De Janeiro, Brazil

[3] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China

[4] Inst High Energy Phys IHEP, Beijing, Peoples R China

[5] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China

[6] Univ Chinese Acad Sci, Beijing, Peoples R China

[7] Cent China Normal Univ, Inst Particle Phys, Wuhan, Hubei, Peoples R China

[8] Univ Savoie Mont Blanc, CNRS, IN2P3 LAPP, Annecy, France

[9] Univ Clermont Auvergne, LPC, CNRS IN2P3, Clermont Ferrand, France

[10] Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France

[11] Univ Paris Saclay, CNRS IN2P3, IJCLab, Orsay, France

[12] Inst Polytech Paris, Lab Leprince Ringuet, Ecole Polytech, CNRS IN2P3, Palaiseau, France

[13] Sorbonne Univ, LPNHE, Paris Diderot Sorbonne Paris Cite, CNRS IN2P3, Paris, France

[14] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany

[15] Tech Univ Dortmund, Fak Phys, Dortmund, Germany

[16] Max Planck Inst Kernphys MPIK, Heidelberg, Germany

[17] Heidelberg Univ, Phys Inst, Heidelberg, Germany

[18] Univ Coll Dublin, Sch Phys, Dublin, Ireland

[19] INFN Sez Bari, Bari, Italy

[20] INFN Sez Bologna, Bologna, Italy

[21] INFN Sez Ferrara, Ferrara, Italy

[22] INFN Sez Firenze, Florence, Italy

[23] INFN Lab Nazl Frascati, Frascati, Italy

[24] INFN Sez Genova, Genoa, Italy

[25] INFN Sez Milano, Milan, Italy

[26] INFN Sez Milano Bicocca, Milan, Italy

[27] INFN Sez Cagliari, Monserrato, Italy

[28] Univ Padua, Univ, Padua, Italy

[29] INFN, Padua, Italy

[30] INFN Sez Pisa, Pisa, Italy

[31] INFN Sez Roma Tor Vergata, Rome, Italy

[32] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands

[33] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland

[34] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland

[35] Natl Ctr Nucl Res NCBJ, Warsaw, Poland

[36] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[37] CERN, Meyrin, Switzerland

[38] Univ Ramon Llull, DS4DS, Barcelona, Spain

[39] Univ Barcelona, ICCUB, Barcelona, Spain

[40] Univ Santiago De Compostela, Inst Galego Fis Altas Enerxias IGFAE, Santiago De Compostela, Spain

[41] Ctr Mixto Univ Valencia CSIC, Inst Fis Corpuscular, Valencia, Spain

[42] European Org Nucl Res CERN, Geneva, Switzerland

[43] Ecole Polytech Fed Lausanne, Inst Phys, Lausanne, Switzerland

[44] Univ Zurich, Phys Inst, Zurich, Switzerland

[45] NSC Kharkiv Inst Phys & Technol NSC KIPT, Kharkiv, Ukraine

[46] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine

[47] Univ Birmingham, Birmingham, W Midlands, England

[48] Univ Bristol, HH Wills Phys Lab, Bristol, Avon, England

[49] Univ Cambridge, Cavendish Lab, Cambridge, England

[50] Univ Warwick, Dept Phys, Coventry, W Midlands, England

来源：

PHYSICAL REVIEW D | 2023年 / 108卷 / 05期

基金：

美国国家科学基金会; 欧洲研究理事会; 欧盟地平线“2020”; 中国国家自然科学基金; 英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.108.052008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The mass difference between the Omega -b and Xi -b baryons is measured using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1, and is found to be mo Omega -bthorn - mo Xi -bthorn 1/4 248.54? 0.51ostatthorn ? 0.38osystthorn MeV=c2. The mass of the Omega -b baryon is measured to be mo Omega -bthorn 1/4 6045.9 ? 0.5ostatthorn ? 0.6osystthorn MeV=c2. This is the most precise determination of the Omega -b mass to date. In addition, the production rate of Omega -b baryons relative to that of Xi -b baryons is measured for the first time in pp collisions, using an LHCb dataset collected at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 6 fb-1. Reconstructing beauty baryons in the kinematic region 2 < <eta> < 6 and pT < 20 GeV=c with their decays to a J=psi meson and a hyperon, the ratio f Omega- b f Xi- b tation fractions of b quarks into Omega -b and Xi -b baryons, respectively, and B represents the branching fractions of their respective decays. Bo Omega- b -> J=psi Omega -thorn x Bo Xi- b -> J=psi Xi -thorn 1/4 0.120 ? 0.008ostatthorn ? 0.008osystthorn, is obtained, where f Omega- b and f Xi -b are the fragmen-

引用

页数：16

共 45 条

[1] Observation of excited Ωc0 baryons in Ωb- → Ξc+ K-π- decays
Aaij, R.
Beteta, C. Abellan
Ackernley, T.
Adeva, B.
Adinolfi, M.
Afsharnia, H.
Aidala, C. A.
Aiola, S.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Aliouche, Z.
Alkhazov, G.
Cartelle, P. Alvarez
Amato, S.
Amhis, Y.
An, L.
Anderlini, L.
Andreianov, A.
Andreotti, M.
Archilli, F.
Artamonov, A.
Artuso, M.
Arzymatov, K.
Aslanides, E.
Atzeni, M.
Audurier, B.
Bachmann, S.
Bachmayer, M.
Back, J. J.
Baladron Rodriguez, P.
Balagura, V
Baldini, W.
Leite, J. Baptista
Barlow, R. J.
Barsuk, S.
Barter, W.
Bartolini, M.
Baryshnikov, F.
Basels, J. M.
Bassi, G.
Batsukh, B.
Battig, A.
Bay, A.
Becker, M.
Bedeschi, F.
Bediaga, I
[J]. PHYSICAL REVIEW D, 2021, 104 (09)
[2] Observation of a new Ξb0 state
Aaij, R.
Beteta, C. Abellan
Ackernley, T.
Adeva, B.
Adinolfi, M.
Afsharnia, H.
Aidala, C. A.
Aiola, S.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Albero, A. Alfonso
Aliouche, Z.
Alkhazov, G.
Cartelle, P. Alvarez
Amato, S.
Amhis, Y.
An, L.
Anderlini, L.
Andreianov, A.
Andreotti, M.
Archilli, F.
Artamonov, A.
Artuso, M.
Arzymatov, K.
Aslanides, E.
Atzeni, M.
Audurier, B.
Bachmann, S.
Bachmayer, M.
Back, J. J.
Baker, S.
Baladron Rodriguez, P.
Balagura, V
Baldini, W.
Leite, J. Baptista
Barlow, R. J.
Barsuk, S.
Barter, W.
Bartolini, M.
Baryshnikov, F.
Basels, J. M.
Bassi, G.
Batsukh, B.
Battig, A.
Bay, A.
Becker, M.
Bedeschi, F.
[J]. PHYSICAL REVIEW D, 2021, 103 (01)
[3] Measurement of b hadron fractions in 13 TeV pp collisions
Aaij, R.
Beteta, C. Abellan
Adeva, B.
Adinolfi, M.
Aidala, C. A.
Ajaltouni, Z.
Akar, S.
Albicocco, P.
Albrecht, J.
Alessio, F.
Alexander, M.
Albero, A. Alfonso
Alkhazov, G.
Cartelle, P. Alvarez
Alves, A. A., Jr.
Amato, S.
Amerio, S.
Amhis, Y.
An, L.
Anderlini, L.
Andreassi, G.
Andreotti, M.
Andrews, J. E.
Archilli, F.
Romeu, J. Arnau
Artamonov, A.
Artuso, M.
Arzymatov, K.
Aslanides, E.
Atzeni, M.
Audurier, B.
Bachmann, S.
Back, J. J.
Baker, S.
Balagura, V.
Baldini, W.
Baranov, A.
Barlow, R. J.
Barrand, G. C.
Barsuk, S.
Barter, W.
Bartolini, M.
Baryshnikov, F.
Batozskaya, V.
Batsukh, B.
Battig, A.
Battista, V.
Bay, A.
Beddow, J.
Bedeschi, F.
[J]. PHYSICAL REVIEW D, 2019, 100 (03)
[4] Measurement of the mass and production rate of Ξb- baryons
Aaij, R.
Beteta, C. Abellan
Adeva, B.
Adinolfi, M.
Aidala, C. A.
Ajaltouni, Z.
Akar, S.
Albicocco, P.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Alkhazov, G.
Cartelle, P. Alvarez
Alves Jr, A. A.
Amato, S.
Amerio, S.
Amhis, Y.
An, L.
Anderlini, L.
Andreassi, G.
Andreotti, M.
Andrews, J. E.
Archilli, F.
d'Argent, P.
Romeu, J. Arnau
Artamonov, A.
Artuso, M.
Arzymatov, K.
Aslanides, E.
Atzeni, M.
Audurier, B.
Bachmann, S.
Back, J. J.
Baker, S.
Balagura, V
Baldini, W.
Baranov, A.
Barlow, R. J.
Barrand, G. C.
Barsuk, S.
Barter, W.
Bartolini, M.
Baryshnikov, F.
Batozskaya, V
Batsukh, B.
Battig, A.
Battista, V
Bay, A.
Beddow, J.
[J]. PHYSICAL REVIEW D, 2019, 99 (05)
[5] Measurement of the Ωc0 Baryon Lifetime
Aaij, R.
Collaboration, LHCb
Adeva, B.
Adinolfi, M.
Aidala, C. A.
Ajaltouni, Z.
Akar, S.
Albicocco, P.
Albrecht, J.
Alessio, F.
Alexander, M.
Albero, A. Alfonso
Ali, S.
Alkhazov, G.
Cartelle, P. Alvarez
Alves, A. A., Jr.
Amato, S.
Amerio, S.
Amhis, Y.
An, L.
Anderlini, L.
Andreassi, G.
Andreotti, M.
Andrews, J. E.
Appleby, R. B.
Archilli, F.
d'Argent, P.
Romeu, J. Arnau
Artamonov, A.
Artuso, M.
Arzymatov, K.
Aslanides, E.
Atzeni, M.
Audurier, B.
Bachmann, S.
Back, J. J.
Baker, S.
Balagura, V.
Baldini, W.
Baranov, A.
Barlow, R. J.
Barsuk, S.
Barter, W.
Baryshnikov, F.
Batozskaya, V.
Batsukh, B.
Battista, V.
Bay, A.
Beddow, J.
Bedeschi, F.
[J]. PHYSICAL REVIEW LETTERS, 2018, 121 (09)
[6] Measurement of the b-Quark Production Cross Section in 7 and 13 TeV pp Collisions (vol 118, 052002, 2017)
Aaij, R.
[J]. PHYSICAL REVIEW LETTERS, 2017, 119 (16)
[7] Measurement of the b- Quark Production Cross Section in 7 and 13 TeV pp Collisions
Aaij, R.
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Alkhazov, G.
Cartelle, P. Alvarez
Alves, A. A., Jr.
Amato, S.
Amerio, S.
Amhis, Y.
An, L.
Anderlini, L.
Andreassi, G.
Andreotti, M.
Andrews, J. E.
Appleby, R. B.
Archilli, F.
d'Argent, P.
Romeu, J. Arnau
Artamonov, A.
Artuso, M.
Aslanides, E.
Auriemma, G.
Baalouch, M.
Babuschkin, I.
Bachmann, S.
Back, J. J.
Badalov, A.
Baesso, C.
Baker, S.
Baldini, W.
Barlow, R. J.
Barschel, C.
Barsuk, S.
Barter, W.
Baszczyk, M.
Batozskaya, V.
Batsukh, B.
Battista, V.
Bay, A.
Beaucourt, L.
Beddow, J.
Bedeschi, F.
Bediaga, I.
Bel, L. J.
[J]. PHYSICAL REVIEW LETTERS, 2017, 118 (05)
[8] Measurement of the mass and lifetime of the Ωb- baryon
Aaij, R.
Beteta, C. Abellan
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Alkhazov, G.
Cartelle, P. Alvarez
Alves, A. A., Jr.
Amato, S.
Amerio, S.
Amhis, Y.
An, L.
Anderlini, L.
Andreassi, G.
Andreotti, M.
Andrews, J. E.
Appleby, R. B.
Gutierrez, O. Aquines
Archilli, F.
d'Argent, P.
Artamonov, A.
Artuso, M.
Aslanides, E.
Auriemma, G.
Baalouch, M.
Bachmann, S.
Back, J. J.
Badalov, A.
Baesso, C.
Baker, S.
Baldini, W.
Barlow, R. J.
Barschel, C.
Barsuk, S.
Barter, W.
Batozskaya, V.
Battista, V.
Bay, A.
Beaucourt, L.
Beddow, J.
Bedeschi, F.
Bediaga, I.
Bel, L. J.
Bellee, V.
Belloli, N.
[J]. PHYSICAL REVIEW D, 2016, 93 (09)
[9] LHCb detector performance
Aaij, R.
Adeva, B.
Adinolfi, M.
Affolder, A.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Alkhazov, G.
Alvarez Cartelle, P.
Alves, A. A., Jr.
Amato, S.
Amerio, S.
Amhis, Y.
An, L.
Anderlini, L.
Anderson, J.
Andreassen, R.
Andreotti, M.
Andrews, J. E.
Appleby, R. B.
Gutierrez, O. Aquines
Archilli, F.
Artamonov, A.
Artuso, M.
Aslanides, E.
Auriemma, G.
Baalouch, M.
Bachmann, S.
Back, J. J.
Badalov, A.
Baesso, C.
Baldini, W.
Barlow, R. J.
Barschel, C.
Barsuk, S.
Barter, W.
Batozskaya, V.
Battista, V.
Bay, A.
Beaucourt, L.
Beddow, J.
Bedeschi, F.
Bediaga, I.
Belogurov, S.
Belous, K.
Belyaev, I.
Ben-Haim, E.
[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2015, 30 (07):
[10] Performance of the LHCb Vertex Locator
Aaij, R.
Affolder, A.
Akiba, K.
Alexander, M.
Ali, S.
Appleby, R. B.
Artuso, M.
Bates, A.
Bay, A.
Behrendt, O.
Benton, J.
Van Beuzekom, M.
Bjornstad, P. M.
Bogdanova, G.
Borghi, S.
Borgia, A.
Bowcock, T. J. V.
Van den Brand, J.
Brown, H.
Buytaert, J.
Callot, O.
Carroll, J.
Casse, G.
Collins, P.
Capua, S. De
Doets, M.
Donleavy, S.
Dossett, D.
Dumps, R.
Eckstein, D.
Eklund, L.
Farinelli, C.
Farry, S.
Ferro-Luzzi, M.
Frei, R.
Garofoli, J.
Gersabeck, M.
Gershon, T.
Gong, A.
Gong, H.
Gordon, H.
Haefeli, G.
Harrison, J.
Heijne, V.
Hennessy, K.
Hulsbergen, W.
Huse, T.
Hutchcroft, D.
Jaeger, A.
Jalocha, P.
[J]. JOURNAL OF INSTRUMENTATION, 2014, 9

← 1 2 3 4 5 →