New prediction of elastic scattering cross sections ratio Re+e- based on phenomenological two-photon exchange corrections

被引：3

作者：

Qattan, I. A. ^{[1
]}

机构：

[1] Khalifa Univ Sci & Technol, Dept Phys, POB 127788, Abu Dhabi, U Arab Emirates

来源：

27TH INTERNATIONAL NUCLEAR PHYSICS CONFERENCE (INPC2019) | 2020年 / 1643卷

关键词：

POSITRON-PROTON; ELECTRON-PROTON;

D O I：

10.1088/1742-6596/1643/1/012192

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The proton's electric and magnetic form factors (FFs) and their ratio R-p = G(E)(p)/G(M)(p) are fundamental and essential ingredients needed to parametrize the internal structure of the proton as well as many composite particles. However, the inconsistency in the results reported on these FFs and their ratio as measured by the Rosenbluth method and the polarization transfer method has led the community to believe that such a discrepancy is due to a systematic difference between the two methods. It was proposed that missing higher order radiative correction to the electron-proton elastic scattering cross section sigma(R)(epsilon, Q(2)) and in particular two-photon exchange correction (TPE) should be applied in order to reconcile these measurements. The effect of TPE on electron-proton scattering observables was studied extensively in the last few years. However, the most direct method for measuring TPE contributions is the comparison of positron-proton and electron-proton elastic scattering cross sections ratio Re+e-(epsilon,Q(2)). In this proceedings, I present a new prediction of the ratio Re+e- as determined using a new parametrization of TPE corrections to sigma(R). I then compare my results to several previous phenomenological extractions, TPE hadronic calculations, and previous and recent direct measurements of Re+e-.

引用

页数：6

共 40 条

[1] Strangelet search in Au plus Au collisions at √sNN=200 GeV [J].

Abelev, B. I. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Anderson, B. D. ;

Arkhipkin, D. ;

Averichev, G. S. ;

Bai, Y. ;

Balewski, J. ;

Barannikova, O. ;

Barnby, L. S. ;

Baudot, J. ;

Baumgart, S. ;

Belaga, V. V. ;

Bellingeri-Laurikainen, A. ;

Bellwied, R. ;

Benedosso, F. ;

Betts, R. R. ;

Bhardwaj, S. ;

Bhasin, A. ;

Bhati, A. K. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Bland, L. C. ;

Blyth, S.-L. ;

Bombara, M. ;

Bonner, B. E. ;

Botje, M. ;

Bouchet, J. ;

Brandin, A. V. ;

Bravar, A. ;

Burton, T. P. ;

Bystersky, M. ;

Cadman, R. V. ;

Cai, X. Z. ;

Caines, H. ;

Sanchez, M. Calderon de la Barca ;

Callner, J. ;

Catu, O. ;

Cebra, D. ;

Chajecki, Z. ;

Chaloupka, P. ;

Chattopadhyay, S. ;

Chen, H. F. ;

Chen, J. H. ;

Chen, J. Y. ;

Cheng, J. ;

Cherney, M. ;

Chikanian, A. ;

Christie, W. .

PHYSICAL REVIEW C, 2007, 76 (01)

[2] Towards a Resolution of the Proton Form Factor Problem: New Electron and Positron Scattering Data [J].

Adikaram, D. ;

Rimal, D. ;

Weinstein, L. B. ;

Raue, B. ;

Khetarpal, P. ;

Bennett, R. P. ;

Arrington, J. ;

Brooks, W. K. ;

Adhikari, K. P. ;

Afanasev, A. V. ;

Amaryan, M. J. ;

Anderson, M. D. ;

Pereira, S. Anefalos ;

Avakian, H. ;

Ball, J. ;

Battaglieri, M. ;

Bedlinskiy, I. ;

Biselli, A. S. ;

Bono, J. ;

Boiarinov, S. ;

Briscoe, W. J. ;

Burkert, V. D. ;

Carman, D. S. ;

Careccia, S. ;

Celentano, A. ;

Chandavar, S. ;

Charles, G. ;

Colaneri, L. ;

Cole, P. L. ;

Contalbrigo, M. ;

Crede, V. ;

D'Angelo, A. ;

Dashyan, N. ;

De Vita, R. ;

De Sanetis, E. ;

Deur, A. ;

Djalali, C. ;

Dodge, G. E. ;

Dupre, R. ;

Egiyan, H. ;

El Alaoui, A. ;

El Fassi, L. ;

Elouadrhiri, L. ;

Eugenio, P. ;

Fedotov, G. ;

Fegan, S. ;

Filippi, A. ;

Fleming, J. A. ;

Fradi, A. ;

Garillon, B. .

PHYSICAL REVIEW LETTERS, 2015, 114 (06)

[3] Two-photon exchange in elastic electron-proton scattering [J].

Afanasev, A. ;

Blunden, P. G. ;

Hasell, D. ;

Raue, B. A. .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 2017, 95 :245-278

[4]

Akhiezer A.I., 1974, Sov. J. Part. Nucl, V4, P277

[5] Electromagnetic form factors of the nucleon: New fit and analysis of uncertainties [J].

Alberico, W. M. ;

Bilenky, S. M. ;

Giunti, C. ;

Graczyk, K. M. .

PHYSICAL REVIEW C, 2009, 79 (06)

[6] POSITRON-PROTON ELASTIC SCATTERING AT 800 AND 1200 MEV [J].

ANDERSON, RL ;

BORGIA, B ;

CASSIDAY, GL ;

DEWIRE, JW ;

ITO, AS ;

LOH, EC .

PHYSICAL REVIEW, 1968, 166 (05) :1336-&

[7] SCATTERING OF POSITRONS AND ELECTRONS FROM PROTONS [J].

ANDERSON, RL ;

BORGIA, B ;

CASSIDAY, GL ;

DEWIRE, JW ;

ITO, AS ;

LOH, EC .

PHYSICAL REVIEW LETTERS, 1966, 17 (07) :407-&

[8] Global analysis of proton elastic form factor data with two-photon exchange corrections [J].

Arrington, J. ;

Melnitchouk, W. ;

Tjon, J. A. .

PHYSICAL REVIEW C, 2007, 76 (03)

[9] Extraction of two-photon contributions to the proton form factors [J].

Arrington, J .

PHYSICAL REVIEW C, 2005, 71 (01)

[10] Review of two-photon exchange in electron scattering [J].

Arrington, J. ;

Blunden, P. G. ;

Melnitchouk, W. .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 2011, 66 (04) :782-833

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