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
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.
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页数:28
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