Measurement of the charm mixing parameter yCP-yCPKπ using two-body D0 meson decays

被引：15

作者：

Aaij, R. ^{[33
]}

Abdelmotteleb, A. S. W. ^{[57
]}

Beteta, C. Abellan ^{[51
]}

Abudinen, F. ^{[57
]}

Ackernley, T. ^{[61
]}

Adeva, B. ^{[47
]}

Adinolfi, M. ^{[55
]}

Afsharnia, H. ^{[9
]}

Agapopoulou, C. ^{[13
]}

Aidala, C. A. ^{[69
,89
]}

Aiola, S. ^{[25
]}

Ajaltouni, Z. ^{[9
]}

Akar, S. ^{[66
]}

Albrecht, J. ^{[15
]}

Alessio, F. ^{[49
]}

Alexander, M. ^{[60
]}

Alfonso Albero, A. ^{[46
]}

Aliouche, Z. ^{[63
]}

Alkhazov, G. ^{[39
]}

Cartelle, P. Alvarez ^{[56
]}

Amato, S. ^{[2
]}

Amey, J. L. ^{[55
]}

Amhis, Y. ^{[11
]}

An, L. ^{[49
]}

Anderlini, L. ^{[22
]}

Andersson, M. ^{[51
]}

Andreianov, A. ^{[39
]}

Andreotti, M. ^{[21
]}

Ao, D. ^{[6
]}

Archilli, F. ^{[17
]}

Artamonov, A. ^{[45
]}

Artuso, M. ^{[69
]}

Arzymatov, K. ^{[43
]}

Aslanides, E. ^{[10
]}

Atzeni, M. ^{[51
]}

Audurier, B. ^{[12
]}

Bachmann, S. ^{[17
]}

Bachmayer, M. ^{[50
]}

Back, J. J. ^{[57
]}

Baladron Rodriguez, P. ^{[47
]}

Balagura, V ^{[12
]}

Baldini, W. ^{[21
]}

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

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

Barlow, R. J. ^{[63
]}

Barsuk, S. ^{[11
]}

Barter, W. ^{[62
]}

Bartolini, M. ^{[56
]}

Baryshnikov, F. ^{[42
,84
]}

Basels, J. M. ^{[14
]}

机构：

[1] Ctr Brasileiro Pesquisas Fis 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] Inst High Energy Phys 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, 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, Lab Leprince Ringuet, Inst Polytech Paris, CNRS IN2P3, Palaiseau, France

[13] Sorbonne Univ, Paris Diderot Sorbonne Paris Cite, LPNHE, 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 MPIK, Heidelberg, Germany

[17] Heidelberg Univ, Phys Inst, 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 Subatom 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] NRC Kurchatov Inst PNPI NRC KI, Petersburg Nucl Phys Inst, Gatchina, Russia

[40] Russian Acad Sci INR RAS, Inst Nucl Res, Moscow, Russia

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

[42] NRC Kurchatov Inst ITEP NRC KI, Inst Theoret & Expt Phys, Moscow, Russia

[43] Yandex Sch Data Anal, Moscow, Russia

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

[45] NRC Kurchatov Inst IHEP NRC KI, Inst High Energy Phys, Protvino, Russia

[46] Univ Barcelona, ICCUB, Barcelona, Spain

[47] Univ Santiago de Compostela, Inst Galego Fis Altas Enerxias IGFAE, Santiago De Compostela, Spain

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

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

[50] Ecole Polytech Fed Lausanne EPFL, Inst Phys, Lausanne, Switzerland

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.105.092013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the ratios of the effective decay widths of D-0 -> pi(-)pi(+) and D-0 -> K- K+ decays over that of D-0 -> K-pi(+) decays is performed with the LHCb experiment using proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb(-1). These observables give access to the charm mixing parameters y(CP)(pi pi) - y(CP)(K pi )and y(CP)(KK) -y(CP)(K pi), and are measured as y(CP)(pi pi) - y(CP)(K pi) = (6.57 +/- 0.53 +/- 0.16) x 10(-3), y(CP)(KK) - y(CP)(K pi) = (7.08 +/- 0.30 +/- 0.14) x 10(-3), where the first uncertainties are statistical and the second systematic. The combination of the two measurements is Y-CP - y(CP)(K pi) = (6.96 +/- 0.26 +/- 0.13) x 10(-3), which is four times more precise than the previous world average.

引用

页数：17

共 33 条

[21] Dispersive and absorptive CP violation in D0 - (D)over-bar0 mixing [J].

Kagan, Alexander L. ;

Silvestrini, Luca .

PHYSICAL REVIEW D, 2021, 103 (05)

[22] Indirect CP violation and implications for D0-(D)over-bar0 and Bs-(B)over-bars mixing [J].

Kagan, Alexander L. ;

Sokoloff, Michael D. .

PHYSICAL REVIEW D, 2009, 80 (07)

[23] The EvtGen particle decay simulation package [J].

Lange, DJ .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2001, 462 (1-2) :152-155

[24] Measurement of D0-(D)over-bar0 mixing and CP violation in two-body D0 decays [J].

Lees, J. P. ;

Poireau, V. ;

Tisserand, V. ;

Garra Tico, J. ;

Grauges, E. ;

Palano, A. ;

Eigen, G. ;

Stugu, B. ;

Brown, D. N. ;

Kerth, L. T. ;

Kolomensky, Yu G. ;

Lynch, G. ;

Koch, H. ;

Schroeder, T. ;

Asgeirsson, D. J. ;

Hearty, C. ;

Mattison, T. S. ;

McKenna, J. A. ;

So, R. Y. ;

Khan, A. ;

Blinov, V. E. ;

Buzykaev, A. R. ;

Druzhinin, V. P. ;

Golubev, V. B. ;

Kravchenko, E. A. ;

Onuchin, A. P. ;

Serednyakov, S. I. ;

Skovpen, Yu I. ;

Solodov, E. P. ;

Todyshev, K. Yu ;

Yushkov, A. N. ;

Bondioli, M. ;

Kirkby, D. ;

Lankford, A. J. ;

Mandelkern, M. ;

Atmacan, H. ;

Gary, J. W. ;

Liu, F. ;

Long, O. ;

Vitug, G. M. ;

Campagnari, C. ;

Hong, T. M. ;

Kovalskyi, D. ;

Richman, J. D. ;

West, C. A. ;

Eisner, A. M. ;

Kroseberg, J. ;

Lockman, W. S. ;

Martinez, A. J. ;

Schumm, B. A. .

PHYSICAL REVIEW D, 2013, 87 (01)

[25]

Pajero T., CHARMFITTER

[26] Mixing and CP violation in D0 → K-π+ decays [J].

Pajero, Tommaso ;

Morello, Michael Joseph .

JOURNAL OF HIGH ENERGY PHYSICS, 2022, 2022 (03)

[27] Measurement of D0-(D) over bar0 mixing and search for indirect CP violation using D0 → KS0π+π- decays [J].

Peng, T. ;

Zhang, Z. P. ;

Abdesselam, A. ;

Adachi, I. ;

Aihara, H. ;

Arinstein, K. ;

Asner, D. M. ;

Aulchenko, V. ;

Aushev, T. ;

Ayad, R. ;

Bakich, A. M. ;

Bala, A. ;

Bhardwaj, V. ;

Bhuyan, B. ;

Bobrov, A. ;

Bondar, A. ;

Bonvicini, G. ;

Bozek, A. ;

Cervenkov, D. ;

Chekelian, V. ;

Chen, A. ;

Cheon, B. G. ;

Cho, I. -S. ;

Cho, K. ;

Chobanova, V. ;

Choi, Y. ;

Cinabro, D. ;

Dalseno, J. ;

Danilov, M. ;

Dolezal, Z. ;

Drasal, Z. ;

Drutskoy, A. ;

Dutta, D. ;

Eidelman, S. ;

Epifanov, D. ;

Farhat, H. ;

Fast, J. E. ;

Ferber, T. ;

Frost, O. ;

Gaur, V. ;

Ganguly, S. ;

Garmash, A. ;

Gillard, R. ;

Goh, Y. M. ;

Golob, B. ;

Haba, J. ;

Hara, T. ;

Hayasaka, K. ;

Hayashii, H. ;

He, X. H. .

PHYSICAL REVIEW D, 2014, 89 (09)

[28]

Pietrzyk G., 2021, THESIS ECOLE POLYTEC

[29]

Rogozhnikov A., hep_ml - Machine Learning for High Energy Physics

[30] Measurement of D0-(D)over-bar0 Mixing Parameters Using D0 → KS0π+ π- and D0 → KS0K+K- Decays [J].

Sanchez, P. del Amo ;

Lees, J. P. ;

Poireau, V. ;

Prencipe, E. ;

Tisserand, V. ;

Garra Tico, J. ;

Grauges, E. ;

Martinelli, M. ;

Palano, A. ;

Pappagallo, M. ;

Eigen, G. ;

Stugu, B. ;

Sun, L. ;

Battaglia, M. ;

Brown, D. N. ;

Hooberman, B. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Lynch, G. ;

Osipenkov, I. L. ;

Tanabe, T. ;

Hawkes, C. M. ;

Watson, A. T. ;

Koch, H. ;

Schroeder, T. ;

Asgeirsson, D. J. ;

Hearty, C. ;

Mattison, T. S. ;

McKenna, J. A. ;

Khan, A. ;

Randle-Conde, A. ;

Blinov, V. E. ;

Buzykaev, A. R. ;

Druzhinin, V. P. ;

Golubev, V. B. ;

Onuchin, A. P. ;

Serednyakov, S. I. ;

Skovpen, Yu. I. ;

Solodov, E. P. ;

Todyshev, K. Yu. ;

Yushkov, A. N. ;

Bondioli, M. ;

Curry, S. ;

Kirkby, D. ;

Lankford, A. J. ;

Mandelkern, M. ;

Martin, E. C. ;

Stoker, D. P. ;

Atmacan, H. ;

Gary, J. W. .

PHYSICAL REVIEW LETTERS, 2010, 105 (08)

← 1 2 3 4 →