Amplitude analysis of the D+→ π-π+π+ decay and measurement of the π-π+ S-wave amplitude

被引：5

作者：

Aaij, R. ^{[3
,33
]}

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

Beteta, C. Abellan ^{[45
]}

Abudinen, F. ^{[51
]}

Ackernley, T. ^{[55
]}

Adeva, B. ^{[41
]}

Adinolfi, M. ^{[49
]}

Afsharnia, H. ^{[9
]}

Agapopoulou, C. ^{[13
]}

Aidala, C. A. ^{[63
,78
]}

Aiola, S. ^{[25
]}

Ajaltouni, Z. ^{[9
]}

Akar, S. ^{[60
]}

Akiba, K. ^{[33
]}

Albrecht, J. ^{[15
]}

Alessio, F. ^{[43
]}

Alexander, M. ^{[54
]}

Alfonso Albero, A. ^{[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.

Ao, D.

Archilli, F. ^{[17
]}

Artamonov, A. ^{[39
]}

Artuso, M. ^{[63
]}

Aslanides, E. ^{[10
]}

Atzeni, M. ^{[45
]}

Audurier, B. ^{[12
]}

Bachmann, S. ^{[17
]}

Bachmayer, M. ^{[44
]}

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

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

Baladron Rodriguez, P. ^{[41
]}

Balagura, V. ^{[12
]}

Baldini, W. ^{[21
]}

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

Barbetti, M. ^{[22
,88
]}

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

Barsuk, S. ^{[11
]}

Barter, W. ^{[56
]}

Bartolini, M. ^{[50
]}

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] 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 Mt Blanc, CNRS, IN2P3 LAPP, Annecy, France

[9] Univ Clermont Auvergne, CNRS, IN2P3, LPC, 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, 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, Inst Phys 1, Aachen, Germany

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

[16] MPIK, 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, Sec 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 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] Univ Valencia, CSIC, Ctr Mixto, Inst Fis Corpuscular, Valencia, Spain

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

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

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

[46] 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 / 2023卷 / 06期

关键词：

Charm Physics; Hadron-Hadron Scattering; Particle and Resonance Production; HIGH-STATISTICS; LIGHT; CMD-2; D+;

D O I：

10.1007/JHEP06(2023)044

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：

An amplitude analysis of the D+-> (-)pi(+)pi(+) decay is performed with a sample corresponding to 1.5 fb(-1) of integrated luminosity of pp collisions at a centre-of-mass energy root s = 8 TeV collected by the LHCb detector in 2012. The sample contains approximately six hundred thousand candidates with a signal purity of 95%. The resonant structure is studied through a fit to the Dalitz plot where the pi(-)pi(+) S-wave amplitude is extracted as a function of pi(-)pi(+) mass, and spin-1 and spin-2 resonances are included coherently through an isobar model. The S-wave component is found to be dominant, followed by the rho(770)(0)pi(+) and f(2)(1270)pi(+) components. A small contribution from the omega(782) -> pi(-)pi(+) decay is seen for the first time in the D+-> pi(-)pi(+)pi(+) decay.

引用

页数：28

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