First observation and branching fraction measurement of the Λb0 → Ds- p decay

被引：0

作者：

Aaij, R. ^{[33
]}

Abdelmotteleb, A. S. W. ^{[51
]}

Beteta, C. Abellan ^{[45
]}

Abudinen, F. ^{[51
]}

Ackernley, T. ^{[55
]}

Adeva, B. ^{[41
]}

Adinolfi, M. ^{[49
]}

Adlarson, P. ^{[78
]}

Afsharnia, H. ^{[9
]}

Agapopoulou, C. ^{[13
]}

Aidala, C. A. ^{[79
]}

Ajaltouni, Z. ^{[9
]}

Akar, S. ^{[60
]}

Akiba, K. ^{[33
]}

Albicocco, P. ^{[23
]}

Albrecht, J. ^{[15
]}

Alessio, F. ^{[43
]}

Alexander, M. ^{[54
]}

Albero, A. Alfonso ^{[40
]}

Aliouche, Z. ^{[57
]}

Cartelle, P. Alvarez ^{[50
]}

Amalric, R. ^{[13
]}

Amato, S. ^{[2
]}

Amey, J. L. ^{[49
]}

Amhis, Y. ^{[11
,43
]}

An, L. ^{[43
]}

Anderlini, L. ^{[22
]}

Andersson, M. ^{[45
]}

Andreianov, A. ^{[39
]}

Andreotti, M. ^{[21
]}

Andreou, D. ^{[63
]}

Ao, D. ^{[6
]}

Archilli, F. ^{[17
]}

Artamonov, A. ^{[39
]}

Artuso, M. ^{[63
]}

Aslanides, E. ^{[10
]}

Atzeni, M. ^{[45
]}

Audurier, B. ^{[12
]}

Perea, I. B. Bachiller ^{[8
]}

Bachmann, S. ^{[17
]}

Bachmayer, M. ^{[44
]}

Back, J. J. ^{[51
]}

Bailly-reyre, A. ^{[13
]}

Rodriguez, P. Baladron ^{[41
]}

Balagura, V. ^{[12
]}

Baldini, W. ^{[21
,43
]}

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

Barbetti, M. ^{[22
,90
]}

Barlow, R. J. ^{[57
]}

Barsuk, S. ^{[11
]}

机构：

[1] CBPF, Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil

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

[4] Inst High Energy Phys, 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 Mt 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, IJCLab, CNRS, IN2P3, Orsay, France

[12] Ecole Polytech, Inst Polytech Paris, Lab Leprince Ringuet, 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, 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, Padua, Italy

[29] INFN, Padua, Italy

[30] INFN, Sez Pisa, Pisa, Italy

[31] INFN, Sez Roma La Sapienza, Rome, Italy

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

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

[34] Vrije Univ Amsterdam, Amsterdam, Netherlands

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

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

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

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

[39] CERN, Geneva, Switzerland

[40] Univ Barcelona, ICCUB, Barcelona, Spain

[41] Univ Santiago de Compostela, IGFAE, Santiago De Compostela, Spain

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

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

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

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

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

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

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

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

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 07期

基金：

欧盟地平线“2020”; 欧洲研究理事会; 美国国家科学基金会; 英国科研创新办公室; 英国科学技术设施理事会; 澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

B Physics; Branching fraction; Flavour Physics; Hadron-Hadron Scattering;

D O I：

10.1007/JHEP07(2023)075

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The first observation of the Lambda(0)(b) -> D-s(-) p decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of root s = 13TeV, corresponding to a total integrated luminosity of 6 fb(-1). Using the Lambda(0)(b) -> Lambda(+pi-)(c) decay as the normalisation mode, the branching fraction of the Lambda(0)(b) -> D-s(-) p decay is measured to be B (Lambda(0)(b) -> D-s(-) p) = (12.6 +/- 0.5 +/- 0.3 +/- 1.2) x 10(-6), where the first uncertainty is statistical, the second systematic and the third due to uncertainties in the branching fractions of the Lambda(0)(b) -> Lambda(+pi-)(c), D-s(-) -> K-K+pi(-) and Lambda(+)(c) -> pK(-)pi(+) decays.

引用

页数：23

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