6533b82efe1ef96bd12926e9

RESEARCH PRODUCT

Amplitude analysis of the χc1→ηπ+π− decays

Z. T. SunM. Y. DongH. B. LiuZ. A. LiuZ. H. WangJin LiJ. H. ZouJ. F. SunV. PrasadS. MarcelloY. BanP. WeidenkaffF. H. HeinsiusS. S. SunP. MusiolC. F. RedmerR. FarinelliXiaocong AiY. ZengH. H. LiuJ. C. LiS. P. WenX. S. QinX. R. ZhouBingxuan LiuC. SchnierJ. ZhuangD. J. AmbroseM. X. LuoYucheng HuangX. T. HuangD. V. DedovichZ. NingG. LiH. L. MaCheng LiR. E. MitchellM. G. ZhaoD. M. LiR. P. GuoG. RongX. N. MaY. B. ChenXiaofeng ZhuJ. Z. ZhangA. ZalloC. D. FuC. Q. FengX. R. ChenY. N. ZhangQ. LiuM. AlbrechtM. PelizaeusZ. Y. DengM. MaggioraLing ZhaoX. Y. JiangJ. H. LiuH. B. LiA. G. DenigKe WangC. L. LuoC. C. ZhangB. ZhongL. B. GuoH. MuramatsuUlrich WiednerM. KornicerT. MaLei ZhaoZ. L. HouW. D. LiXingguo LiXichao RuanA. CalcaterraZ. G. ZhaoJ. M. BianS. J. ZhaoL. L. MaR. KliemtH. H. ZhangM. M. MaZ. J. SunL. GongM. H. GuH. LoehnerF. LiC. HuA. A. ZafarFang LiuI. DenysenkoS. AhmedY. X. YangX. TangE. H. ThorndikeJie YuY. H. GuanM. BertaniKai LiuH. Y. ShengL. G. XiaA. AmorosoL. J. WuL. Q. QinQ. J. XuF. C. MaC. X. YuZ. HaddadiJ. C. ChenT. J. MinK. J. ZhuC. Z. YuanK. H. RashidF. FeldbauerXuanhong LouA. DbeyssiG. CibinettoS. B. LiuM. FritschY. J. MoC. LengX. L. JiA. HafnerB. Y. ZhangNasser Kalantar-nayestanakiL. YangM. KavatsyukC. Morales MoralesQ. ZhaoY. T. LiangI. TapanY. NefedovY. Z. SunX. C. ChenP. F. DuanY. H. YanB. ZhengR. G. PingXiang ZhouJ. W. ZhaoS. J. ChenA. JulinL. G. XiaJ. Z. BaiYue PanK. J. ZhuZhiqing LiuGang ZhaoT. WeberY. C. ZhuA. Q. GuoYanwei WangS. HanJ. F. QiuL. FavaChi ZhangZ. G. WangH. Y. ZhangY. G. XieX. L. GaoF. De MoriX. Y. ZhouW. M. SongX. B. JiM. TiemensT. HoltmannG. F. ChenS. QianQ. AnJialun PingMagnus WolkeJ. Y. LiuG. S. HuangX. K. ChuS. X. DuZ. L. DouY. F. LiangP. PatteriBibo KeT. JohanssonJ. F. ChangB. X. ZhangC. DongS. SosioL. H. WuJ. Y. ZhangX. H. MoL. S. WangM. H. YeM. SavrieG. F. XuS. JinO. B. KolcuX. CaiJ. Q. ZhangY. H. ZhengCong-feng QiaoO. AlbayrakFenfen AnB. L. WangH. XiaoT. HeldW. B. YanS. PacettiL. L. WangH. CaiCui LiQ. GaoY. N. GaoY. ZhangD. P. JinN. Yu. MuchnoiW. GradlX. S. KangJoachim PetterssonM. RipkaJ. ChaiG. A. ChelkovG. X. SunJ. V. BennettLi YanX. F. WangQ. P. JiZ. JiaoFu-hu LiuD. H. ZhangY. N. GuoH. J. LuJ. G. LuK. ZhangX. Y. ZhangY. H. ZhangLiqing XuM. LaraX. Y. ShenXiao-rui LyuI. B. NikolaevJ. Z. FanT. C. ZhaoKe LiJ. B. LiuPeilian LiuX. Q. HaoQ. M. MaJ. H. YinB. KlossW. P. WangLingxuan ZhangX. Y. NiuY. YuanY. S. ZhuG. S. VarnerD. Y. WangYunlong ZhangY. K. HengY. J. SunE. BogerZ. H. QinJun-yi ZhangF. E. MaasZ. Y. WangD. BettoniY. DingZhiyong ZhangY. P. LuYu ZhangT. HuM. ShaoY. T. GuP. L. WangDayong WangN. QinY. P. GuoJ. L. ZhangB. J. LiuR. PolingG. R. LiaoW. G. LiO. BakinaJ. MinJianping ZhengS. ZhuX. LiuQ. P. JiS. SpataroX. Y. SongF. A. HarrisX. P. XuY. Y. LiuZ. P. ZhangH. R. QiX. FangL. ZottiP. X. ShenZ. WuH. LeithoffW. KühnL. W. JiangZ. L. HuangSerkant Ali CetinLei LiH. M. LiuI. UmanZhiqing ZhangZ. Y. YouZ. A. ZhuJ. B. JiaoJ. F. HuFeng LiuB. KopfS. Q. ZhangG. F. CaoM. AblikimY. J. MaoH. X. YangK. L. HeI. GarziaE. FioravantiJ. J. ZhangJ. P. LiuM. DestefanisK. GoetzenJ. G. MesschendorpD. W. BennettZujian WangJ. P. DaiQiunan XuM. ShiC. P. ShenM. Z. WangJimin ZhaoZ. J. XiaoX. L. KangA. SarantsevS. SchumannD. H. WeiP. R. LiJ. S. LangeQ. W. ZhaoJ. J. XuYao WangXiaozhong HuangM. QiM. H. YeY. B. LiH. J. YangJ. S. HuangY. B. ZhaoAndrzej KupscC. X. LiuL. D. LiuW. L. YuanL. Y. DongM. L. ChenW. ShanJ. DongW. J. ZhengY. Q. WangF. NerlingS. NisarC. J. TangY. HuY. P. LuB. WangD. XiaoJie ZhaoD. X. LinAlexey ZhemchugovH. M. HuJ. W. ZhangP. LarinS. Z. ChenZ. GaoS. L. NiuF. Y. LiX. Q. LiY. F. LongY. X. XiaS. H. ZhuX. K. ZhouK. Y. LiuZ. B. LiW. Ikegami AnderssonP. KieseS. L. OlsenR. A. BriereX. S. JiangO. CakirY. F. WangT. HussainX. Y. MaW. X. GongX. H. SunQ. A. MalikG. MezzadriW. C. YanM. N. AchasovL. P. ZhouY. M. MaZ. P. MaoH. P. ChengJ. FangTao LiCh. RosnerH. LiangYaquan FangM. GrecoK. SchoenningQ. Y. LiB. S. ZouNiklaus BergerG. FeliciH. J. LiQ. L. XiuQ. OuyangS. S. FangY. B. LiuP. L. WangX. L. LuoW. P. WangF. BianchiD. Y. LiuR. Baldini FerroliKrisztian PetersX. N. LiHaiping PengTao LuoB. X. YuZhi ZengH. S. ChenAlperen YüncüH. L. DaiIgor Boyko

subject

PhysicsParticle physicsAmplitudeMeson010308 nuclear & particles physicsElectron–positron annihilation0103 physical sciencesPiAnalytical chemistryDalitz plot010306 general physics01 natural sciences

description

Using 448.0 x 10(6) psi(3686) events collected with the BESIII detector, an amplitude analysis is performed for psi(3686) -> gamma chi(c1), chi(c1) ->eta pi(+)pi(-) decays. The most dominant two- body structure observed is a(0)(980)(+/-) pi(-/+); a(0)(980)(+/-) -> eta pi(+/-.) line shape is modeled using a dispersion relation, and a significant nonzero a(0) (980) coupling to the eta'pi channel is measured. We observe chi(c1) -> a(2)(1700)pi production for the first time, with a significance larger than 17 sigma. The production of mesons with exotic quantum numbers, J(PC) = 1(-+), is investigated, and upper limits for the branching fractions chi(c1) -> pi(1)(1400)(+/-)pi(-/+) , chi(c1) -> pi(1)(1600)(+/-)pi(-/+) and chi(c1) -> pi 1(2015)(+/-)pi(-/+) with subsequent pi(1)(X)(+/-) -> eta pi(+/-) decay, are determined.

https://doi.org/10.1103/physrevd.95.032002