6533b855fe1ef96bd12b1101

RESEARCH PRODUCT

Observation of a00(980)−f0(980) Mixing

L. YangJiangbo ZhuM. QiH. J. YangS. B. LiuW. GradlM. RipkaD. Y. WangJ. MinB. KopfK. L. HeM. Z. WangJimin ZhaoP. L. LiA. PitkaGuangshun HuangL. YanZhiqing LiuKai LiuT. JohanssonG. A. ChelkovJ. F. ChangY. H. XieJ. PellegrinoO. B. KolcuY. NefedovX. CaiL. LavezziM. MaggioraLing ZhaoW. M. SongLei ZhaoZ. L. HouC. SowaY. B. ZhaoW. ShanX. Q. HaoJ. DongXiao-rui LyuT. KhanY. Q. WangM. RichterZ. NingC. Z. YuanS. NisarC. J. TangM. KuhlmannQ. LiuY. HuY. P. LuMichael PapenbrockZ. A. LiuG. FeliciC. LengX. FangD. XiaoL. L. MaL. GongBibo KeZ. L. HuangW. B. YanCui LiA. AmorosoFeng LiuJun-yi ZhangY. P. GuoM. AlbrechtH. LiangM. AblikimM. N. AchasovZ. P. ZhangZ. J. XiaoW. D. LiY. G. GaoB. T. TsedneeS. PacettiG. S. VarnerA. DbeyssiZhuoming LiD. W. BennettZujian WangY. BaiKe WangH. J. LiY. H. ZhengJ. Q. ZhangQ. L. XiuCong-feng QiaoX. Y. JiangM. M. MaYunlong ZhangA. JulinD. BettoniL. J. WuH. J. LuI. TapanKe LiJ. L. ZhangF. De MoriM. Y. DongZahra HaddadiS. AhmedY. X. YangN. Yu. MuchnoiP. F. DuanJ. G. LuR. PolingY. PanJianping ZhengY. J. MoY. H. YanJ. ChaiS. ZhuYao WangJ. W. ZhaoX. Y. ZhouG. X. SunJ. V. BennettX. S. KangY. H. ZhangJianhao ZhangM. TiemensF. E. MaasH. B. LiuZ. JiaoFu-hu LiuD. H. ZhangI. UmanGianfranco MorelloMagnus WolkeT. HuS. GuY. C. ZhuY. F. LiangFenfen AnQ. OuyangS. S. FangB. L. WangX. F. WangKe LiuZ. G. WangO. BakinaX. L. JiH. Y. ZhangHaiwen LiuD. P. JinJ. H. ZouM. DestefanisQ. ZhaoT. WeberX. N. MaX. L. GaoJ. F. SunQ. M. MaY. B. LiuZ. Y. WangA. MustafaY. Z. SunT. C. ZhaoX. Y. NiuYaquan FangH. XiaoE. BogerDayong WangN. QinY. J. MaoP. X. ShenS. S. SunP. LarinZ. WuT. HeldShun-jia HuangH. X. YangG. F. ChenY. YuanY. S. ZhuX. S. QinXiang ZhouP. L. WangC. DongS. SosioX. L. LuoYu ZhangM. FritschR. KliemtI. GarziaXiaozhong HuangQ. P. JiM. KavatsyukS. MarcelloY. ZengZhiqing ZhangYanwei WangR. E. MitchellGang ZhaoLiqing XuX. Y. ShenJoachim PetterssonF. FeldbauerJ. Y. ZhangO. DorjkhaidavB. GarillonY. G. XieX. K. ZhouFang LiuB. X. ZhangF. BianchiC. HuAndrzej KupscK. SchoenningQ. Y. LiB. S. ZouY. DingJie YuX. TangI. DenysenkoS. X. DuW. C. YanZ. L. DouNiklaus BergerR. FarinelliM. L. ChenB. J. LiuQ. A. MalikG. MezzadriA. YuncuM. RoloJ. G. MesschendorpB. X. YuB. Y. ZhangJ. P. DaiX. Q. HeH. L. MaW. KühnY. B. ChenJ. Z. ZhangZ. Y. YouY. X. XiaS. H. ZhuD. M. LiZhi ZengQiunan XuT. J. MinK. J. ZhuK. J. ZhuZ. A. ZhuL. P. ZhouY. M. MaZ. P. MaoJ. J. SongL. SunA. Q. GuoG. RongM. PelizaeusT. HoltmannH. S. ChenC. P. ShenG. CibinettoJ. Y. LiuJ. FangTao LiZ. GaoG. Y. TangJin LiH. L. DaiIgor BoykoLei ZhangP. L. WangX. H. XieQ. GaoY. N. GaoY. ZhangQ. AnCh. RosnerL. KochXuesong LiuJie ZhaoD. X. LinAlexey ZhemchugovH. M. HuA. KhoukazM. KuemmelR. Baldini FerroliJ. Z. BaiF. A. HarrisW. P. WangH. LeithoffF. LiM. AlekseevZ. H. QinF. C. MaDan WangX. N. LiKrisztian PetersM. G. ZhaoY. H. YangR. P. GuoHaiping PengJ. F. QiuL. FavaG. R. LiaoB. Q. WangW. G. LiY. K. SunQ. P. JiS. SpataroX. P. XuX. B. JiP. PatteriJ. M. BianS. J. ZhaoLei LiQ. J. XuBingxuan LiuS. JinG. LiG. F. CaoJ. C. ChenXuanhong LouNasser Kalantar-nayestanakiC. D. FuC. Q. FengX. R. ChenZ. Y. DengC. Morales MoralesXingguo LiK. GoetzenV. PrasadS. HanL. H. WuM. SavrieYi JinL. XiaY. J. XiaoZ. H. WangC. F. RedmerC. SchnierX. T. HuangD. Y. LiuZ. X. MengX. A. XiongA. A. ZafarJ. B. JiaoYuekun HengS. Q. ZhangJ. J. XuK. H. RashidY. T. LiangS. J. ChenK. J. LiH. R. QiJ. S. HuangC. X. LiuSerkant Ali CetinS. QianJialun PingK. ZhangX. Y. ZhangM. LaraJ. B. LiuY. J. SunY. P. LuG. F. XuZ. T. SunXianglei ZhuY. BanP. WeidenkaffF. H. HeinsiusS. P. WenX. R. ZhouCheng LiJ. H. WeiX. Y. SongM. H. GuH. Y. ShengC. X. YuB. ZhengR. G. PingH. H. LiuX. K. ChuJ. C. LiPeilian LiuZhiyong ZhangJ. ZhuangM. X. LuoD. V. DedovichH. B. LiA. G. DenigC. L. LuoC. C. ZhangB. ZhongL. B. GuoH. MuramatsuUlrich WiednerM. KornicerT. MaA. CalcaterraZ. G. ZhaoS. FeganH. H. ZhangZ. J. SunI. B. NikolaevJ. H. YinM. ShaoY. T. GuE. FioravantiX. L. KangA. SarantsevD. H. WeiP. R. LiP. R. LiJ. S. LangeX. H. MoL. S. WangM. H. YeL. L. WangH. CaiM. H. YeL. D. LiuL. Y. DongW. J. ZhengF. NerlingS. L. NiuF. Y. LiX. Q. LiY. F. LongM. GrecoK. Y. LiuW. Ikegami AnderssonY. F. WangT. HussainX. Y. MaW. X. GongX. H. SunP. KieseS. L. OlsenR. A. BriereX. S. JiangO. CakirM. Bertani

subject

PhysicsMeson010308 nuclear & particles physicsBranching fraction0103 physical sciencesAnalytical chemistryPiGeneral Physics and Astronomy010306 general physics01 natural sciences

description

We report the first observation of a(0)(0)(980)-f(0)(980) mixing in the decays of J/psi -> phi f(0)(980) -> phi a(0)(0)(980) -> phi eta pi(0) and chi(c1) -> a(0)(0)(980)pi(0) -> f(0)(980)pi(0)->pi(+)pi(-)pi(0), using data samples of 1.31 x 10(9) J/psi events and 4.48 x 10(8) psi (3686) events accumulated with the BESIII detector. The signals of f(0)(980) -> a(0)(0)(980) and a(0)(0)(980) -> f(0)(980) mixing are observed at levels of statistical significance of 7.4 sigma and 5.5 sigma, respectively. The corresponding branching fractions and mixing intensities are measured and the constraint regions on the coupling constants, g(a0K+K-) and g(f0K+K-), are estimated. The results improve the understanding of the nature of a(0)(0)(980) and f(0)(980).

https://doi.org/10.1103/physrevlett.121.022001