Measurement of branching fractions of charmless four-body Λb0 and Ξb0 decays

被引：16

作者：

Aaij, R. ^{[42
]}

Adeva, B. ^{[41
]}

Adinolfi, M. ^{[50
]}

Ajaltouni, Z. ^{[5
]}

Akar, S. ^{[61
]}

Albrecht, J. ^{[10
]}

Alessio, F. ^{[42
]}

Alexander, M. ^{[55
]}

Alfonso Albero, A. ^{[40
]}

Ali, S. ^{[45
]}

Alkhazov, G. ^{[33
]}

Cartelle, P. Alvarez ^{[57
]}

Alves, A. A., Jr. ^{[61
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[25
]}

Amhis, Y. ^{[7
]}

An, L. ^{[3
]}

Anderlini, L. ^{[19
]}

Andreassi, G. ^{[43
]}

Andreotti, M. ^{[17
,18
,80
]}

Andrews, J. E. ^{[62
]}

Appleby, R. B. ^{[58
]}

Archilli, F. ^{[45
]}

d'Argent, P. ^{[12
]}

Romeu, J. Arnau ^{[6
]}

Artamonov, A. ^{[39
]}

Artuso, M. ^{[63
]}

Aslanides, E. ^{[6
]}

Atzeni, M. ^{[44
]}

Auriemma, G. ^{[28
]}

Baalouch, M. ^{[5
]}

Babuschkin, I. ^{[58
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[52
]}

Badalov, A. ^{[40
,86
]}

Baesso, C. ^{[2
,64
]}

Baker, S. ^{[57
]}

Balagura, V. ^{[7
,75
]}

Baldini, W. ^{[17
,18
]}

Baranov, A. ^{[37
]}

Barlow, R. J. ^{[58
]}

Barschel, C. ^{[42
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[58
]}

Baryshnikov, F. ^{[34
]}

Batozskaya, V. ^{[31
]}

Battista, V. ^{[43
]}

Bay, A. ^{[43
]}

Beaucourt, L. ^{[4
]}

Beddow, J. ^{[55
]}

机构：

[1] 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] Univ Savoie Mt Blanc, CNRS, IN2P3, LAPP, Annecy Le Vieux, France

[5] Clermont Univ, Univ Blaise Pascal, CNRS IN2P3, LPC, Clermont Ferrand, France

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

[7] Univ Paris Sud, CNRS, IN2P3, LAL, Orsay, France

[8] Univ Paris Diderot, Univ Pierre & Marie Curie, LPNHE, CNRS IN2P3, Paris, France

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

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

[11] MPIK, Heidelberg, Germany

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

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

[14] Sez INFN Bari, Bari, Italy

[15] Sez INFN Bologna, Bologna, Italy

[16] Sez INFN Cagliari, Cagliari, Italy

[17] Univ Ferrara, Ferrara, Italy

[18] INFN, Ferrara, Italy

[19] Sez INFN Firenze, Florence, Italy

[20] INFN Frascati, Lab Nazl, Frascati, Italy

[21] Sez INFN Genova, Genoa, Italy

[22] Univ Milano Bicocca, Milan, Italy

[23] INFN, Milan, Italy

[24] Sez Milano, Milan, Italy

[25] Sez INFN Padova, Padua, Italy

[26] Sez INFN Pisa, Pisa, Italy

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

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

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

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

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

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

[33] Petersburg Nucl Phys Inst, Gatchina, Russia

[34] Inst Theoret & Expt Phys, Moscow, Russia

[35] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia

[36] Russian Acad Sci INR RAN, Inst Nucl Res, Moscow, Russia

[37] Yandex Sch Data Anal, Moscow, Russia

[38] Budker Inst Nucl Phys SB RAS, Novosibirsk, Russia

[39] Inst High Energy Phys, Protvino, Russia

[40] Univ Barcelona, ICCUB, Barcelona, Spain

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

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

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

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

[45] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands

[46] Vrije Univ Amsterdam, Amsterdam, Netherlands

[47] NSC KIPT, Kharkov, Ukraine

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

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

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2018年 / 02期

关键词：

B physics; Branching fraction; Hadron-Hadron scattering (experiments);

D O I：

10.1007/JHEP02(2018)098

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：

A search for charmless four-body decays of Lambda(0)(b) and Xi(0)(b) baryons with a proton and three charged mesons (either kaons or pions) in the final state is performed. The data sample used was recorded in 2011 and 2012 with the LHCb experiment and corresponds to an integrated luminosity of 3 fb(-1). Six decay modes are observed, among which Lambda(0)(b) -> pK(-) pi(+)pi(-), Lambda(0)(b) -> pK(-)K(+)K(-), Xi(0)(b) pK(-) pi(+)pi(-) and Xi(0)(b) pK(-)pi K-+(-) are established for the first time. Their branching fractions (including the ratio of hadronisation fractions in the case of the Xi(0)(b) baryon) are determined relative to the Lambda(0)(b) -> Lambda(+)(c)pi(-) decay.

引用

页数：25

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