CBM Collaboration

T O Ablyazimov ,C Simons,P Trivedy,J De Cuveland,L Golinka-Bezshyyko,D Dementiev,D Gottschalk,C García Chávez,F Constantin,J Eschke,D Emschermann,Gy Wolf,O Svoboda,A Scurtu,D Normanov,M Irfan,Jin Li,S Belogurov,J Pietraszko,A Drozd,R Najman,O Malyatina,M Korolev,N Heine,E Stephan,I Fröhlich,T Matulewicz,A Bubak,B Komkov,T Tolyhi,I Vassiliev,C Müntz,L Naumann,D Wielanek,M Nüssle,Subhasis Chattopadhyay,I Tsakov,A Toia,A Kovalchuk,H Hartmann,A Oancea,T Breitner,O Bertini,K Schweda,C Kreidl,C Pauly,P Banerjee,A Kiss,J Lehnert,V Shumikhin,B Neumann,U Brüning,Yifei Zhang,K Heidel,E Malankin,T Bel,T Barczyk,D Kresan,J Frühauf,O Batenkov,S Parzhitskiy,T Morhardt,V Jakovlev,S Schatral,A Berdnikov,R Adak,R Karabowicz,E Friske,I Kulakov,R Čaplar,A Lymanets,Xu Cai,N Baranova,Qiyan Li,A Ivashkin,J Wüstenfeld,B Heß,F Khasanov,Zhi Deng,E Badura,M Vznuzdaev,I Panasenko,J Michel,S Dubnichka,P.-A Loizeau,S Samanta,A Nedosekin,Ping Cao,J Hehner,O Andreeva,P Zumbruch,V Petráček,Won Sanguk,P Gryboś,J Hutsch,T Tischler,M Goffe,V Tiflov,D Argintaru,I Korolko,A Petrovskiy,A Petrovici,B Linnik,S Seddiki,L Kochenda,E.-M Ilgenfritz,H Appelshäuser,D Bertini,P Staszel,M Kirejczyk,I Filozova,A Senger,M Zhalov,M Merkin,Y Onishchuk,T Galatyuk,E Usenko,P Tlustý,A Rost,M Strikhanov,Wang Yi,C Lara,J Pouryamout,C Wendisch,D Eschweiler,Cheng Li,E Kaptur,K Dey,E Lavrik,A Chernogorov,P Zrelov,A Wieloch,Z Basrak,J Kunkel,A Abuhoza,V Covlea,V Baublis,A Veshikov,O Petukhov,A Sadovsky,E Rostchin,Y Berdnikov,Yu Zaitsev,D Storozhyk,J Bendarouach,J Brzychczyk,L Dutka,E Litvinenko,P Polozov,Huanhuan Fan,C Höhne,K Jaaskelainen,C Baumann,I Kadenko,H Jahan,Feng Liu,A Raportirenko,W Zipper,J Rautenberg,G Caragheorgheopol,V Mikhaylov,V Saveliev,M Wiebusch,V Dobyrn,Yulan Li,R Berendes,H Büsching,C Trageser,R Holzmann,V Kyva,S Amar-Youcef,I Rostovtseva,S Baginyan,Yuanjing Li,J Pluta,D Karmanov,S Querchfeld,V Akishina,M Żoładź,A Arend,N Miftakhov,A Semennikov,A Kotynia,S Böttger,V Friese,Sanatan Chattopadhyay,S Linev,I Valin,V Kleipa,F Seck,I Sorokin,T Balle,K.-H Becker,S Gorbunov,Yaping Wang,Yu Murin,A Lebedev,A Stavinskiy,Z Majka,M Pugach,A Turowiecki,S Löchner,E Iakovleva,R Płaneta,C Sturm,W Niebur,Hongfang Chen,J Adamczewski-Musch,E Berdermann,D Soyk,E Vznuzdaev,N Herrmann,V Mialkovski,B Sikora,V Militsija,I Berceanu,P Kravtsov,M Tanha,E Krebs,M Prokudin,D Ossetski,O Tarassenkova,J Markert,J Gebelein,M Bach,A Bychkov,M Petriş ,W König ,A Andronic ,B.k Singh ,K Poźniak ,C Andrei ,Farooq Ahmad ,Yu Bocharov ,V Baban ,M.f Mir ,S Razin ,Z Ahammed ,Pavel Kisel ,R.n Singaraju ,D Golubkov ,S Bashir ,D Bartoş ,C Bergmann ,Sayma Khan ,A Galkin ,I Lobanov ,V.k Plotnikov ,W Verhoeven ,Stefan Strohauer ,V Eremin ,J.m Heuser ,K Kasiński ,D Miskowiec ,Kyung-Eon Choi ,H Engel ,E Ovcharenko ,E P Akishina ,T Janson ,F Uhlig ,A Vorobiev ,I Gašparić ,J Rauza ,T Balog ,V Ivanov ,A Roy ,V V Kirakosyan ,K Oh ,T Vasiliev ,M Cãlin ,S Kalcher ,U Frankenfeld ,D Peshekhonov ,T Eşanu ,D Doering ,R Sultanov ,H Peng ,Victor Poliakov ,M Al-Turany ,Pavel P.g Akishin ,A Shabunov ,P Kmon ,I Som ,G Claus ,Florian Roether ,A Zinchenko ,C Schiaua ,T P Akishina ,O Karavichev ,G Kretschmar ,M Ivanov ,M M Aggarwal ,J Lehrbach ,Yu.s Anisimov ,H Flemming ,G Gangopadhyay ,A.k Bhati ,A Jipa ,A Khanzadeev ,D Zhou ,Joseph Rosado ,M Krieger ,V Cătănescu ,T.k Bhattacharyya ,A Dorokhov ,A Haldar ,A Bhasin ,A Voronin ,Dmitry Osipov ,J Saini ,Ya Peng Zhang ,J Wiechuła ,I Kisel ,R Raniwala ,C Blume ,А Куглер ,J Pieper ,I Lazanu ,V Jain ,В В Иванов ,V Singhal ,M Kretz ,E Lebedeva ,A.k Dubey ,K I Davkov ,E Lobanova ,A Grzeszczuk ,M Csanád ,A Maevskaya ,S.k Ghosh ,V N Zryuev ,V Pospisil ,Jun-Gyu Yi ,S Manz ,R Talukdar ,E Hellbär ,N Xu ,E Atkin ,V Lindenstruth ,J Tarasiuk ,A.m Marin Garcia ,A Dubnichkova ,X Zhu ,M Golubeva ,V Plujko ,R Kłeczek ,J.p Wessels ,I Yushmanov ,S Haldar ,P Larionov ,M Mohisin Khan ,V Golovtsov ,B Debnath ,A Himmi ,N D’ascenzo ,G Kasprowicz ,L Kudin ,E Karpechev ,Vasilii V Kushpil ,W.f.j Müller ,V Davkov ,G Kekelidze ,N Winckler ,Ágnes Fülöp ,C Xiang ,Nadeem Ahmad ,L Radulescu ,F Rami ,I Selyuzhenkov ,A Khvorostukhin ,Ivana Carević ,V.m Karnaukhov ,K Siwek‐Wilczyńska ,K.-H Kampert ,S Lebedev ,J Eum ,M Koziel ,E Verbitskaya ,Iva Perić ,В И Иванов ,C Simon ,M Dey ,V.f Chepurnov ,W Zabołotny ,V Manko ,Siti Sarah Farhana Ahmad ,A Kolosova ,A Pop ,Ryszard S Romaniuk ,T Mahmoud ,W Dulinski ,M Kiš ,D Blau ,Piotr Otfinowski ,Saliha Reinecke ,Z Yin ,J Gajda ,S Kowalski ,A Ierusalimov ,P.k Sahu ,Dong Wang ,M Petrovici ,M.d Azmi ,P Dillenseger ,Vsevolod Popov ,A Kurepin ,B.w Kolb ,M Baznat ,N Shumeiko ,A Kazantsev ,V.i Rykalin ,S Raha ,P Ghosh ,G M Huang ,C Ristea ,Qian Ye ,K.‐H Schmidt ,K Wiśniewski ,V Marin ,P.p Bhaduri ,Mia Dželalija ,P Fischer ,K.k Gudima ,A Bhattacharyya ,V D Peshekhonov ,O Ristea ,Bernhard Wiedemann ,B Bhattacharjee ,K Koch ,P K Kurilkin ,A Malakhov ,R Averbeck ,M.i Ciobanu ,S Masciocchi ,A Kiryakov ,Krzysztof Piasecki ,V Pugatch ,J.m Kopfer ,Yueming Sun ,M.k Sharma ,X Huang ,M Shao ,I N Aleksandrov ,D Wohlfeld ,G Ososkov ,S Golovnya ,E Kryshen ,J Song ,C.j Schmidt ,O Fateev ,F Guber ,Volodymyr Vovchenko ,M Kaur ,S Volkov ,A Bercuci ,Z Tang ,C.a Deveaux ,Z Sosin ,B Kämpfer ,V Samsonov ,M.-G Târzilă ,C Beşliu ,E Plekhanov ,N.r Panda ,S Sau ,D Malkevich ,G Kozlov ,A Gómez Ramírez ,A.k Singh ,S Chatterji ,V Golovatyuk ,S Avdeev ,A Laso Garcia ,H Malygina ,S Mandal ,T Kiss ,P Maj ,S Raniwala ,S Gorokhov ,H.r Schmidt ,P Senger ,V Galkin ,I Pshenichnov ,Rajarshi Ray ,P Reichelt ,M Baszczyk ,A Herghelegiu ,B Yuldashev ,R Szczygieł ,R Kötte ,Yu M Volkov ,J Rożynek ,A Prakash ,S Sadovsky ,B.v.k.s Potukuchi ,A Reshetin ,A Gupta ,D Hutter ,Y.p Viyogi ,M Anđelić ,Y Gusakov ,M Dürr ,T Nayak ,Subrata Pal ,J Stroth ,S Kiselev ,M Kohn ,I Deppner ,M Adamczyk ,В Н Калинин ,I K Yoo ,Y Zanevsky ,B Milanović ,Sananda Biswas ,S.s Sambyal ,V Nikulin ,P Koczoń ,J.a Lucio Martínez ,N Topil'skaya ,Y F Ryabov ,M Winter ,Evgeny Alexandrov ,S Chernenko ,A Akindinov ,R Visinka ,O Bezshyyko ,M Borysova ,S Mahajan ,T I Kang ,J Cheng ,L Škoda ,F Lemke ,Saumya Das ,A Simakov ,A Byszuk ,R Sahoo ,Philipp Klaus ,C Klein-Bösing ,I Skwira‐Chalot ,S Bandyopadhyay ,D.p Mahapatra ,U Kebschull ,D Finogeev ,C.p Singh ,M Deveaux ,W Raja ,W Kucewicz ,V P Ladygin ,H Deppe ,T Karavicheva ,O Derenovskaya ,Yu Tsyupa ,A Chakrabarti ,M Zyzak

doi:10.1016/s0375-9474(14)00566-1

Abstract

Using 2917pb−1 of data accumulated at 3.773GeV, 44.5pb−1 of data accumulated at 3.65GeV and data accumulated during a ψ(3770) line-shape scan with the BESIII detector, the reaction e+e−→pp¯ is studied considering a possible interference between resonant and continuum amplitudes. The cross section of e+e−→ψ(3770)→pp¯, σ(e+e−→ψ(3770)→pp¯), is found to have two solutions, determined to be (0.059−0.020+0.070±0.012)pb with the phase angle ϕ=(255.8−26.6+39.0±4.8)° (<0.166pb at the 90% confidence level), or σ(e+e−→ψ(3770)→pp¯)=(2.57−0.13+0.12±0.12)pb with ϕ=(266.9−6.3+6.1±0.9)° both of which agree with a destructive interference. Using the obtained cross section of ψ(3770)→pp¯, the cross section of pp¯→ψ(3770), which is useful information for the future PANDA experiment, is estimated to be either (9.8−3.9+11.8)nb (<27.5nb at 90% C.L.) or (425.6−43.7+42.9)nb.

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