학술논문

New analysis of ηπ tensor resonances measured at the COMPASS experiment
Document Type
article
Author
A. JackuraC. Fernández-RamírezM. MikhasenkoA. PilloniV. MathieuJ. NysV. PaukA.P. SzczepaniakG. FoxM. AghasyanR. AkhunzyanovM.G. AlexeevG.D. AlexeevA. AmorosoV. AndrieuxN.V. AnfimovV. AnosovA. AntoshkinK. AugstenW. AugustyniakA. AustregesiloC.D.R. AzevedoB. BadełekF. BalestraM. BallJ. BarthR. BeckY. BedferJ. BernhardK. BickerE.R. BielertR. BirsaM. BodlakP. BordaloF. BradamanteA. BressanM. BücheleV.E. BurtsevW.-C. ChangC. ChatterjeeM. ChiossoI. ChoiA.G. ChumakovS.-U. ChungA. CicuttinM.L. CrespoS. Dalla TorreS.S. DasguptaS. DasguptaO.Yu. DenisovL. DharaS.V. DonskovN. DoshitaCh. DreisbachW. DünnweberR.R. DusaevM. DziewieckiA. EfremovP.D. EversheimM. FaesslerA. FerreroM. FingerM. Finger, jr.H. FischerC. FrancoN. du Fresne von HohenescheJ.M. FriedrichV. FrolovE. FucheyF. GautheronO.P. GavrichtchoukS. GerassimovJ. GiarraF. GiordanoI. GnesiM. GorzellikA. GrassoM. Grosse PerdekampB. GrubeT. GrussenmeyerA. GuskovD. HahneG. HamarD. von HarrachF.H. HeinsiusR. HeitzF. HerrmannN. HorikawaN. d'HoseC.-Y. HsiehS. HuberS. IshimotoA. IvanovYu. IvanshinT. IwataV. JaryR. JoostenP. JörgE. KabußA. KerbiziB. KetzerG.V. KhaustovYu.A. KhokhlovYu. KisselevF. KleinJ.H. KoivuniemiV.N. KolosovK. KondoK. KönigsmannI. KonorovV.F. KonstantinovA.M. KotzinianO.M. KouznetsovZ. KralM. KrämerP. KremserF. KrinnerZ.V. KroumchteinY. KulinichF. KunneK. KurekR.P. KurjataI.I. KuznetsovA. KvetonA.A. LednevE.A. LevchenkoM. LevillainS. LevoratoY.-S. LianJ. LichtenstadtR. LongoV.E. LyubovitskijA. MaggioraA. MagnonN. MakinsN. MakkeG.K. MallotS.A. MamonB. MarianskiA. MartinJ. MarzecJ. MatoušekH. MatsudaT. MatsudaG.V. MeshcheryakovM. MeyerW. MeyerYu.V. MikhailovE. MitrofanovN. MitrofanovY. MiyachiA. NagaytsevF. NerlingD. NeyretJ. NovýW.-D. NowakG. NukazukaA.S. NunesA.G. OlshevskyI. OrlovM. OstrickD. PanzieriB. ParsamyanS. PaulJ.-C. PengF. PereiraM. PešekM. PeškováD.V. PeshekhonovN. PierreS. PlatchkovJ. PochodzallaV.A. PolyakovJ. PretzM. QuaresmaC. QuintansS. RamosC. RegaliG. ReicherzC. RiedlN.S. RogachevaD.I. RyabchikovA. RybnikovA. RychterR. SalacV.D. SamoylenkoA. SandaczC. SantosS. SarkarI.A. SavinT. SawadaG. SbrizzaiP. SchiavonT. SchlüterK. SchmidtH. SchmiedenK. SchönningE. SederA. SelyuninL. SilvaL. SinhaS. SirtlM. SluneckaJ. SmolikA. SrnkaD. SteffenM. StolarskiO. SubrtM. SulcH. SuzukiA. SzabelskiT. SzameitatP. SznajderM. TasevskyS. TessaroF. TessarottoA. ThielJ. TomsaF. ToselloV. TskhayS. UhlB.I. VasilishinA. VauthJ. VelosoA. VidonM. ViriusS. WallnerT. WeisrockM. WilfertJ. ter WolbeekK. ZarembaP. ZavadaM. ZavertyaevE. ZemlyanichkinaN. ZhuravlevM. Ziembicki
Source
Physics Letters B, Vol 779, Iss , Pp 464-472 (2018)
Subject
Physics
QC1-999
Language
English
ISSN
0370-2693
Abstract
We present a new amplitude analysis of the ηπ D-wave in the reaction π−p→ηπ−p measured by COMPASS. Employing an analytical model based on the principles of the relativistic S-matrix, we find two resonances that can be identified with the a2(1320) and the excited a2′(1700), and perform a comprehensive analysis of their pole positions. For the mass and width of the a2 we find M=(1307±1±6) MeV and Γ=(112±1±8) MeV, and for the excited state a2′ we obtain M=(1720±10±60) MeV and Γ=(280±10±70) MeV, respectively.