Search for the rare decays W+ →Ds+γ and Z → D0 γ at LHCb

被引：2

作者：

Aaij, R. ^{[33
,74
,75
]}

Abdelmotteleb, A. S. W. ^{[51
,64
]}

Beteta, C. Abellan ^{[45
]}

Abudinen, F. ^{[51
,64
]}

Ackernley, T. ^{[55
]}

Adeva, B. ^{[41
]}

Adinolfi, M. ^{[49
]}

Adlarson, P. ^{[78
]}

Afsharnia, H. ^{[9
]}

Agapopoulou, C. ^{[13
,70
]}

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

Ajaltouni, Z. ^{[9
]}

Akar, S. ^{[60
]}

Akiba, K. ^{[33
,74
,75
]}

Albrecht, J. ^{[15
]}

Alessio, F. ^{[43
,72
]}

Alexander, M. ^{[54
,78
]}

Alfonso Albero, A. ^{[40
,77
]}

Aliouche, Z. ^{[57
]}

Cartelle, P. Alvarez ^{[50
]}

Amalric, R. ^{[13
,70
]}

Amato, S. ^{[2
,65
]}

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

Amhis, Y. ^{[11
,43
,72
]}

An, L. ^{[43
,72
]}

Anderlini, L. ^{[22
]}

Andersson, M. ^{[45
]}

Andreianov, A. ^{[39
]}

Andreotti, M. ^{[21
,73
]}

Andreou, D. ^{[63
,79
]}

Ao, D. ^{[6
]}

Archilli, F. ^{[17
,71
]}

Artamonov, A. ^{[39
]}

Artuso, M. ^{[63
,79
]}

Aslanides, E. ^{[10
]}

Atzeni, M. ^{[45
]}

Audurier, B. ^{[12
]}

Bachmann, S. ^{[17
,71
]}

Bachmayer, M. ^{[44
]}

Back, J. J. ^{[51
,64
]}

Bailly-reyre, A. ^{[13
,70
]}

Baladron Rodriguez, P. ^{[41
]}

Balagura, V. ^{[12
]}

Baldini, W. ^{[21
,73
]}

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

Barbetti, M. ^{[22
,89
]}

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

Barsuk, S. ^{[11
]}

Barter, W. ^{[56
]}

Bartolini, M. ^{[50
]}

机构：

[1] Ctr Brasileiro Pesquisas Fis, 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, State Key Lab Nucl Phys & Technol, Sch Phys, 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] Inst Polytech Paris, Ecole Polytech, IN2P3, Lab Leprince Ringuet,CNRS, Palaiseau, France

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

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

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

[16] Max Planck Inst Kernphys, Heidelberg, Germany

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

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

[19] Ist Nazl Fis Nucl, Sez Bari, Bari, Italy

[20] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy

[21] Ist Nazl Fis Nucl, Sez Ferrara, Ferrara, Italy

[22] Ist Nazl Fis Nucl, Sez Firenze, Florence, Italy

[23] Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy

[24] Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy

[25] Ist Nazl Fis Nucl, Sez Milano, Milan, Italy

[26] Ist Nazl Fis Nucl, Sez Milano Bicocca, Milan, Italy

[27] Ist Nazl Fis Nucl, Sez Cagliari, Monserrato, Italy

[28] Univ Padua, Padua, Italy

[29] Ist Nazl Fis Nucl, Padua, Italy

[30] Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy

[31] Ist Nazl Fis Nucl, Sez Roma La Sapienza, Rome, Italy

[32] Ist Nazl Fis Nucl, 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, 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, Inst Galego Fis Altas Enerxias, Santiago De Compostela, Spain

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

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

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

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

[46] NSC Kharkiv Inst Phys & Technol, 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：

CHINESE PHYSICS C | 2023年 / 47卷 / 09期

关键词：

W/Z boson; rare decay; upper limit of branching fraction;

D O I：

10.1088/1674-1137/aceae9

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A search for the rare decays W+ -> D-s(+)gamma and Z -> D-0 gamma and is performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 2.0fb(-1). No significant signal is observed for either decay mode and upper limits on their branching fractions are set using W+ -> mu(+)nu and Z ->mu(+)mu(-)decays as normalization channels. The upper limits are and at 95% confidence level for W+ -> D-s(+)gamma and Z -> D-0 gamma the and decay modes, respectively. This is the first reported search for Z -> D-0 gamma the decay, while the upper limit on the Z -> D-0 gamma branching fraction improves upon the previous best limit.

引用

页数：13

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