Spin Dependence of η Meson Production in Proton-Proton Collisions Close to Threshold

被引：2

作者：

Adlarson, P. ^{[1
,29
]}

Augustyniak, W. ^{[2
]}

Bardan, W. ^{[3
]}

Bashkanov, M. ^{[4
]}

Bass, S. D. ^{[3
]}

Bergmann, F. S. ^{[5
]}

Berlowski, M. ^{[6
]}

Bondar, A. ^{[7
,8
]}

Buscher, M. ^{[9
,30
,31
]}

Calen, H. ^{[1
]}

Ciepal, I. ^{[10
]}

Clement, H. ^{[11
,12
]}

Czerwinski, E. ^{[3
]}

Demmich, K. ^{[5
]}

Engels, R. ^{[9
]}

Erven, A.

Erven, W. ^{[13
]}

Eyrich, W. ^{[14
]}

Fedorets, P. ^{[9
,15
]}

Fohl, K. ^{[16
]}

Fransson, K. ^{[1
]}

Goldenbaum, F. ^{[9
]}

Goswami, A. ^{[9
,17
]}

Grigoryev, K. ^{[9
,18
]}

Gullstrom, C. -O. ^{[1
]}

Heijkenskjold, L. ^{[1
,29
]}

Hejny, V. ^{[9
]}

Husken, N. ^{[5
]}

Jarczyk, L. ^{[3
]}

Johansson, T. ^{[1
]}

Kamys, B. ^{[3
]}

Kemmerling, G. ^{[13
]}

Khatri, G. ^{[3
,33
]}

Khoukaz, A. ^{[5
]}

Khreptak, O. ^{[3
]}

Kirillov, D. A. ^{[19
]}

Kistryn, S. ^{[3
]}

Kleines, H. ^{[32
]}

Klos, B. ^{[20
]}

Krzemien, W. ^{[3
]}

Kulessa, P. ^{[10
]}

Kupsc, A. ^{[1
,6
]}

Kuzmin, A. ^{[7
]}

Lalwani, K. ^{[21
]}

Lersch, D. ^{[9
]}

Lorentz, B. ^{[9
]}

Magiera, A. ^{[3
]}

Maier, R. ^{[9
,22
,23
]}

Marciniewski, P. ^{[1
]}

Marianski, B.

机构：

[1] Uppsala Univ, Dept Phys & Astron, Div Nucl Phys, S-75120 Uppsala, Sweden

[2] Natl Ctr Nucl Res, Dept Nucl Phys, Ul Hoza 69, PL-00681 Warsaw, Poland

[3] Jagiellonian Univ, Inst Phys, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland

[4] Univ Edinburgh, Sch Phys & Astron, James Clerk Maxwell Bldg,Peter Guthrie Tait Rd, Edinburgh EH9 3FD, Midlothian, Scotland

[5] Westfal Wilhelms Univ Munster, Inst Kernphys, Wilhelm Klemm Str 9, D-48149 Munster, Germany

[6] Natl Ctr Nucl Res, High Energy Phys Dept, Ul Hoza 69, PL-00681 Warsaw, Poland

[7] SB RAS, Budker Inst Nucl Phys, 11 Aka Lavrentieva Prospect, Novosibirsk 630090, Russia

[8] Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia

[9] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany

[10] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, 152 Radzikowskiego St, PL-31342 Krakow, Poland

[11] Eberhard Karls Univ Tubingen, Phys Inst, Morgenstelle 14, D-72076 Tubingen, Germany

[12] Univ Tubingen, Phys Inst, Kepler Ctr Astro & Teilchenphys, D-72076 Tubingen, Germany

[13] Forschungszentrum Julich, ZentralInst Engn Elekt & Analyt, D-52425 Julich, Germany

[14] Friedrich Alexander Univ Erlangen Nurnberg, Phys Inst, Erwin Rommel Str 1, D-91058 Erlangen, Germany

[15] State Sci Ctr Russian Federat, Inst Theoret & Expt Phys, Bolshaya Cheremushkinskaya 25, Moscow 117218, Russia

[16] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany

[17] Indian Inst Technol Indore, Dept Phys, Indore 453552, Madhya Pradesh, India

[18] Petersburg Nucl Phys Inst, High Energy Phys Div, Orlova Rosha 2, Gatchina, Russia

[19] Joint Inst Nucl Phys, Veksler & Baldin Lab High Energiy Phys, 6 Joliot Curie, Dubna 141980, Russia

[20] Univ Silesia, August Chelkowski Inst Phys, Uniwersytecka 4, PL-40007 Katowice, Poland

[21] Malaviya Natl Inst Technol Jaipur, Dept Phys, JLN Marg, Jaipur 302017, Rajasthan, India

[22] Forschungszentrum Julich, Julich Aachen Res Alliance, FAME, JARA, D-52425 Julich, Germany

[23] Rhein Westfal TH Aachen, D-52056 Aachen, Germany

[24] Ruhr Univ Bochum, Inst Expt Phys 1, Univ Str 150, D-44780 Bochum, Germany

[25] Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India

[26] Tomsk State Univ, Dept Phys, 36 Lenina Ave, Tomsk 634050, Russia

[27] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[28] Natl Ctr Nucl Res, Dept Astrophys, PL-90950 Lodz, Poland

[29] Johannes Gutenberg Univ Mainz, Inst Kernphys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany

[30] Forschungszentrum Julich, PGI Elekt Eigensch 6, Peter Grunberg Inst, D-52425 Julich, Germany

[31] Heinrich Heine Univ Dusseldorf, Inst Laser & Plasmaphys, Univ Str 1, D-40225 Dusseldorf, Germany

[32] Forschungszentrum Julich, Julich Ctr Neutron Sci JCNS, D-52425 Julich, Germany

[33] Harvard Univ, Dept Phys, 17 Oxford St, Cambridge, MA 02138 USA

[34] Ist Nazl Fis Nucl, Lab Nazl Frascati, Via E Fermi 40, I-00044 Frascati, Roma, Italy

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 02期

基金：

瑞典研究理事会;

关键词：

QUASI-FREE; NUCLEON; FACILITY; COSY;

D O I：

10.1103/PhysRevLett.120.022002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high polarization degree of the proton beam of COSY, the reaction (p) over right arrowp -> pp eta has been measured close to threshold to explore the analyzing power A(y). The angular distribution of A(y) is determined with the precision improved by more than 1 order of magnitude with respect to previous results, allowing a first accurate comparison with theoretical predictions. The determined analyzing power is consistent with zero for an excess energy of Q = 15 MeV, signaling s-wave production with no evidence for higher partial waves. At Q = 72 MeV the data reveal strong interference of Ps and Pp partial waves and cancellation of (Pp)(2) and Ss*Sd contributions. These results rule out the presently available theoretical predictions for the production mechanism of the eta meson.

引用

页数：6

共 50 条

[41] ππ production in proton-proton collisions
Skorodko, T.
Bashkanov, M.
Bogoslowsky, D.
Calen, H.
Cappellaro, F.
Clement, H.
Demiroers, L.
Ekstroem, C.
Fransson, K.
Greiff, J.
Gustafsson, L.
Hoeistad, B.
Ivanov, G.
Jacewicz, M.
Jiganov, E.
Johansson, T.
Kaskulov, M. M.
Keleta, S.
Khakimova, O.
Koch, I.
Kren, F.
Kullander, S.
Kupsc, A.
Kuznetsov, A.
Marciniewski, P.
Meier, R.
Morosov, B.
Oelert, W.
Pauly, C.
Petukhov, Y.
Povtorejko, A.
Ruber, R. J. M. Y.
Schwick, A.
Scobel, W.
Shafigullin, R.
Shwartz, B.
Sopov, V.
Stepaniak, J.
Tchernyshev, V.
Thoerngren-Engblom, P.
Tikhomirov, V.
Turowiecki, A.
Wagner, G. J.
Wolke, M.
Yamamoto, A.
Zabierowski, J.
Zlomancazuk, J.
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2007, 22 (2-3): : 509 - 513
[42] ELASTIC SCATTERING AND SINGLE MESON PRODUCTION IN PROTON-PROTON COLLISIONS AT 2.85 BEV
SMITH, GA
FOWLER, EC
KRAYBILL, H
SANDWEISS, J
COURANT, H
TAFT, H
PHYSICAL REVIEW, 1961, 123 (06): : 2160 - &
[43] Near threshold production of η, η′ and charged kaon pairs in proton-proton collisions
Khoukaz, A
Adam, HH
Balewski, JT
Budzanowski, A
Goodman, C
Grzonka, D
Jarczyk, L
Jochmann, M
Kilian, K
Lang, N
Lister, T
Moskal, P
Oelert, W
Quentmeier, C
Santo, R
Schepers, G
Seddik, U
Sefzick, T
Sewerin, S
Smyrski, J
Strzalkowski, A
Wolke, M
Wüstner, P
Wyrwa, D
NUCLEAR PHYSICS A, 2000, 663 : 565C - 568C
[44] Heavy-meson production cross sections from proton-proton collisions
Sibirtsev, AA
NUCLEAR PHYSICS A, 1996, 604 (04) : 455 - 465
[45] Publisher Correction: Observation of triple J/ψ meson production in proton-proton collisions
Nature Physics, 2024, 20 : 332 - 332
[46] η MESON PRODUCTION IN PROTON-PROTON COLLISIONS AT 40 AND 72 MeV EXCESS ENERGY
Petren, Henrik
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2011, 26 (3-4): : 681 - 682
[47] η-meson production in proton-proton collisions at excess energies of 40 and 72 MeV
Petren, H.
Bargholtz, Chr.
Bashkanov, M.
Bogoslavsky, D.
Calen, H.
Clement, H.
Demiroers, L.
Ekstrom, C.
Fransson, K.
Faldt, G.
Geren, L.
Hoistad, B.
Ivanov, G.
Jacewicz, M.
Jiganov, E.
Johansson, T.
Keleta, S.
Khakimova, O.
Koch, I.
Kren, F.
Kullander, S.
Kupsc, A.
Lindberg, K.
Marciniewski, P.
Morosov, B.
Pauly, C.
Petukhov, Y.
Povtorejko, A.
Schonning, K.
Scobel, W.
Skorodko, T.
Stepaniak, J.
Tegner, P-E
Engblom, P. Thorngren
Tikhomirov, V.
Wilkin, C.
Wolke, M.
Zabierowski, J.
Zartova, I.
Zlomanczuk, J.
PHYSICAL REVIEW C, 2010, 82 (05):
[48] Tensor meson production in proton-proton collisions from the color glass condensate
Fillion-Gourdeau, Francois
Jeon, Sangyong
PHYSICAL REVIEW C, 2008, 77 (05):
[49] Publisher Correction: Observation of triple J/ψ meson production in proton-proton collisions
Nature Physics, 2023, 19 : 461 - 461
[50] Comparison of isoscalar vector meson production cross sections in proton-proton collisions
Abdel-Bary, A.
Abdel-Samad, S.
Brinkmann, K. -Th.
Clement, H.
Dietrich, J.
Doroshkevich, E.
Dshemuchadse, S.
Ehrhardt, K.
Erhardt, A.
Eyrich, W.
Filippi, A.
Freiesleben, H.
Fritsch, A.
Gillitzer, A.
Hesselbarth, D.
Jaekel, R.
Karsch, L.
Kilian, K.
Kuhlmann, E.
Marcello, S.
Michel, P.
Moeller, K.
Morsch, H. P.
Pizzolotto, C.
Plettner, Ch.
Ritman, J.
Roderburg, E.
Schoenmeier, P.
Schroeder, W.
Schulte-Wissermann, M.
Steinke, M.
Sun, G. J.
Ullrich, W.
Wenzel, R.
Wintz, P.
Wagner, M.
Wilms, A.
Wirth, S.
Zupranski, P.
PHYSICS LETTERS B, 2007, 647 (5-6) : 351 - 357

← 1 2 3 4 5 →