Determination of Strong-Phase Parameters in D→KS,L0π+π−

M Ablikim,Y Ban,Yao Zhang,L Xia,A Rivetti,S Lusso,M Himmelreich,F Feldbauer,H Liang,J Biernat,K Peters,V Prasad,Feng Liu,F De Mori,R Baldini Ferroli,A Amoroso,Y Yuan,Z Gao,J Chai,J Bloms,K Schoenning,M Albrecht,Meng Wang,R Kliemt,S Marcello,S Malde,B Garillon,Yi Zhang,T Lenz,W Xu,B Kopf,Y Gao,S Nisar,L Lavezzi,M Irshad,F Bianchi,A Dbeyssi,W Imoehl,T Weber,Y Zheng,A Denig,G Mezzadri,A Mangoni,L Sun,Y Nefedov,N Cao,Y Zeng,Ch Rosner,X Tang,Zhiqing Liu,N Berger,Yu Zhang,Yifan Yang,Ling Zhao,Yang Zhang,A Calcaterra,L Yan,M Qi,Y Pan,Q Ji,K Goetzen,Z Jiao,Q Zhao,B Tsednee,C Dong,H Leithoff,M Wolke,F Cossio,Huihui Liu,R Poling,S Qian,A Guskov,M Alekseev,K Begzsuren,P Kiese,O Bakina,M Rolo,R Farinelli,G Cibinetto,S Jin,W Gradl,P Weidenkaff,Y Ding,S Pacetti,Q Zhou,L Koch,J Min,S Han,A Gilman,J Fang,G Wilkinson,V Rodin,M Savrié,B Zheng,D Ambrose,J Libby,I Uman,V Thoren,Y Jin,I Denysenko,N Qin,Y Bai,X Shi,T Yu,S Sosio,U Wiedner,R Kappert,L Fava,P Larin,M Destefanis,T Held,W Shan,M Fritsch,H Cai,W Ikegami Andersson,D Bettoni,T Hu,C Sowa,M Pelizaeus,Q Ouyang,I Garzia,T Hussain,S Maldaner,Lei Li,Y Fang,Huanhuan Liu,K Ravindran,G Rong,A Khoukaz,M Maggiora,G Zhao,G Felici,M Kavatsyuk,M Shao,F Nerling,S Gu,S Nakhoul,Y Xia,Q An,W Kühn,M Kuemmel,A Sarantsev,T Johansson,A Pitka,Q Gao,I Balossino,C Morales Morales,J Dong,M Rump,M Kuessner,R Kiuchi,H Muramatsu,M Papenbrock,B Zhong,Y Fu,S Spataro,A Mustafa,Ke Liu,Cheng Li,F Yan,T Luo,M Greco,J Pettersson,M Bertani,P Adlarson,S Ahmed,Z Wu,A Zhemchugov,L Yang,A Yuncu,Y Hu,L Gong,Zongyuan Wang,Fang Liu,Z Ning,Y Schelhaas,J Zhuang,E Gersabeck ,S J Zhao ,W X Gong ,Y J Sun ,X N ,W L Chang ,J G Messchendorp ,F F An ,L B Guo ,H B Liu ,H Y Zhang ,Q M ,G F Xu ,G Chen ,X A Xiong ,Z Y You ,Q Liu ,T J Zhang ,Y S Zhu ,C D Fu ,C C Zhang ,Y Y Gao ,Z T Sun ,M X Luo ,M G Zhao ,Y F Liang ,M M ,J L Ping ,B S Zou ,X F Cui ,Y K Heng ,Xu Li ,L H Wu ,S P Wen ,H L ,D X Lin ,D P Jin ,X Y Jiang ,B Liu ,F F Sui ,X N Li ,Y Q Wang ,K Zhang ,P L Li ,J C Chen ,K Wang ,Y B Chen ,J Q Zhang ,D V Dedovich ,P R Li ,Z J Xiao ,X R Lyu ,C X Yu ,L L Wang ,Y Mao ,J L Zhang ,A N Zhu ,J J Song ,X S Qin ,J Chen ,Y H Zhang ,X H Sun ,P X Shen ,F Li ,J S Huang ,S S Fang ,R M Wang ,X Q Hao ,G Li ,C P Shen ,W J Zhu ,H Peng ,X L Gao ,J P Zheng ,G F Cao ,Z B Li ,Z A Liu ,Zaijing Sun ,Zhou Li ,N Kalantar‐Nayestanaki ,H L Jiang ,B X Yu ,R X Yang ,S S Sun ,Jie Yu ,J F Sun ,M Ye ,Z Meng ,G X Sun ,G Y Tang ,Y Zhu ,J Zhang ,Dong Liu ,Z L Hou ,T Y Xing ,М Н Ачасов ,Xinxia Cai ,X P Xu ,Y P Lu ,Z A Zhu ,L M Gu ,F Y Li ,M Wang ,S X Du ,C Z Yuan ,P Patterí ,L K Li ,J S Lange ,X B Ji ,J P Dai ,Y F Wang ,I K Keshk ,H M Liu ,D Y Chen ,Y B Zhao ,Y F Long ,L Y Liu ,I B Nikolaev ,T Liu ,N Yu Muchnoi ,Y P Guo ,X Y Shan ,Q P Ji ,X L Wang ,W D Li ,R P Guo ,W C Yan ,P L Wang ,H Y Sheng ,Markus Richter ,X Y Shen ,B C Ke ,F A Harris ,R A Briere ,Y Wang ,T C Zhao ,H J Li ,H J Yang ,J V Bennett ,H H Zhang ,J C Li ,Y Zhang ,Y M ,S F Zhang ,Zhao Liu ,X P Qin ,S B Liu ,D Y Wang ,B J Liu ,J G Lu ,C F Qiao ,X T Huang ,G A Chelkov ,Y T Liang ,X R Zhou ,Y B Liu ,J D Lu ,C L Luo ,J F Hu ,C F Redmer ,K J Zhu ,A A Zafar ,R E Mitchell ,X X ,G S Huang ,L J Wu ,X Y Zhang ,Y J Xiao ,M Z Wang ,X Y ,X Lou ,W S Cheng ,H M Hu ,S H Zhu ,L Z Liao ,X K Zhou ,Jiawei Zhao ,B Wang ,Y T Tan ,Z Y Deng ,S L Olsen ,S L Niu ,D H Wei ,S J Chen ,C X Liu ,X Q Yuan ,Y T Gu ,H Lu ,B L Wang ,P W Luo ,S Y Xiao ,B Y Zhang ,Y H Yan ,Z P Zhang ,Y J Lin ,J Z Zhao ,Q L Xiu ,X Wang ,Hao Wen ,G R Liao ,Z H Qin ,K Liu ,Q A Malik ,Z Zhao ,J Zhao ,X Liu ,M G Kurth ,Z P Mao ,H S Chen ,X C Dai ,C J Tang ,C Li ,K H Rashid ,H B Li ,C Q Feng ,Z Wang ,Z Y Wang ,Xiaozhong Huang ,K L He ,Z G Wang ,R G Ping ,M H Ye ,O B Kolcu ,C W Wang ,X Y Song ,X L Li ,I R Boyko ,B X Zhang ,F H Liu ,Z L Dou ,S A Çetin ,X H Mo ,J Xu ,D Liu ,M L Chen ,N Hüsken ,S L Yang ,Anita Anita ,Xiaoyu Zhu ,A Q Guo ,S Q Qu ,W B Yan ,F H Heinsius ,T J Min ,J Y Zhang ,D H Zhang ,Y J Mo ,Q J Xu ,X H Li ,F E Maas ,J F Qiu ,X S Kang ,D M Li ,X S Jiang ,J W Li ,W P Wang ,L L ,J B Jiao ,X L Luo ,Ké Li ,F C ,Z Y Zhang ,L Zhang ,Q Y Li ,J Y Liu ,J F Chang ,L S Wang ,T Y Qi ,X L Ji ,W G Li ,C X Lin ,J H Yin ,X F Wang ,H X Yang ,Y Z Sun ,Jing Zhu ,M Y Dong ,Y Xie ,X Y Liu ,K Y Liu ,Y R Hou ,J B Liu ,A Kupść ,Z H Zhang ,M H Gu ,Q Q Song ,H L Dai ,D Y Liu ,Z Yang ,J Fan ,H R Qi ,J H Zou

doi:10.1103/physrevlett.124.241802

Abstract

We report the most precise measurements to date of the strong-phase parameters between $D^0$ and $\bar{D}^0$ decays to $K^0_{S,L}\pi^+\pi^-$ using a sample of 2.93 fb$^{-1}$ of $e^+e^-$ annihilation data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider. Our results provide the key inputs for a binned model-independent determination of the Cabibbo-Kobayashi-Maskawa angle $\gamma/\phi_3$ with $B$ decays. Using our results, the decay model sensitivity to the $\gamma/\phi_3$ measurement is expected to be between 0.7$^{\circ}$ and 1.2$^{\circ}$, approximately a factor of three smaller than that achievable with previous measurements. The improved precision of this work ensures that measurements of $\gamma/\phi_3$ will not be limited by knowledge of strong phases for the next decade. Furthermore, our results provide critical input for other flavor-physics investigations, including charm mixing, other measurements of $CP$ violation, and the measurement of strong-phase parameters for other $D$-decay modes.

Highlights

D 0 decays to K0S;Lπþπ− using a sample of 2.93 fb−1 of eþe− annihilation data collected at a center-of-mass energy
Our results provide the key inputs for a binned model-independent determination of the Cabibbo-Kobayashi-Maskawa angle γ
φ3 measurement is expected to be between 0.7°

Summary

Published by the American Physical Society

We report the most precise measurements to date of the strong-phase parameters between D0 and D 0 decays to K0S;Lπþπ− using a sample of 2.93 fb−1 of eþe− annihilation data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider. (Throughout this Letter, charge conjugation is assumed unless otherwise explicitly noted.) The model-independent approach [12] requires a binned Dalitz plot analysis of the amplitude-weighted average cosine and sine of the relative strong-phase (ΔδD) between D0 and D 0 → K0Sπþπ− to determine γ. These strong-phase parameters were first studied by the CLEO collaboration using 0.82 fb−1 of data [13,14].

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