Nuclear effects on R = σL/σT in deep-inelastic scattering

被引：81

作者：

Ackerstaff, K

Airapetian, A

Akopov, N

Akushevich, I

Amarian, M

Aschenauer, EC

Avakian, H

Avakian, R

Avetissian, A

Bains, B

Baumgarten, C

Beckmann, M

Belostotski, S

Belz, JE

Benisch, T

Bernreuther, S

Bianchi, N

Blouw, J

Böttcher, H

Borissov, A

Bouwhuis, M

Brack, J

Brauksiepe, S

Braun, B

Bray, B

Brons, S

Brückner, W

Brüll, A

Bruins, EEW

Bulten, HJ

Capitani, GP

Carter, P

Chumney, P

Cisbani, E

Court, GR

Dalpiaz, PF

De Sanctis, E

De Schepper, D

Devitsin, E

Huberts, PKAD

Di Nezza, P

Düren, M

Dvoredsky, A

Elbakian, G

Ely, J

Fantoni, A

Fechtchenko, A

Ferstl, M

Fiedler, K

Filippone, BW

机构：

[1] DESY, Deutsch Elektronen Synchrotron, D-22603 Hamburg, Germany

[2] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[3] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[4] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA

[5] Univ Colorado, Nucl Phys Lab, Boulder, CO 80309 USA

[6] DESY Zeuthen, D-15738 Zeuthen, Germany

[7] Joint Inst Nucl Res, Dubna 141980, Russia

[8] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[9] Univ Ferrara, Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

[10] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

[11] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[12] Florida Int Univ, Dept Phys, Miami, FL 33199 USA

[13] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

[14] State Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium

[15] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[16] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[17] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

[18] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England

[19] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[20] Univ Marburg, Inst Phys, D-35037 Marburg, Germany

[21] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[22] Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA

[23] PN Lebedev Phys Inst, Moscow 117924, Russia

[24] Univ Munich, Sekt Phys, D-85748 Garching, Germany

[25] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

[26] NIKHEF H, NL-1009 DB Amsterdam, Netherlands

[27] Petersburg Nucl Phys Inst, St Petersburg 188350, Russia

[28] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[29] Ist Super Sanita, Ist Nazl Fis Nucl, Sez Sanita, I-00161 Rome, Italy

[30] Ist Super Sanita, Phys Lab, I-00161 Rome, Italy

[31] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[32] TRIUMF, Vancouver, BC V6T 2A3, Canada

[33] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan

[34] Free Univ Amsterdam, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands

[35] Yerevan Phys Inst, Yerevan 375036, Armenia

来源：

PHYSICS LETTERS B | 2000年 / 475卷 / 3-4期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会; 日本学术振兴会;

关键词：

D O I：

10.1016/S0370-2693(99)01493-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Cross section ratios for deep-inelastic scattering from N-14 and He-3 with respect to H-2 have been measured by the HERMES experiment at DESY using a 27.5 GeV positron beam. The data cover a range in the Bjorken scaling variable x between 0.013 and 0.65, while the negative squared four-momentum transfer Q(2) Varies from 0.5 to 15 GeV2. The data are compared to measurements performed by NMC, E665, and SLAG on He-4 and C-12, and rue found to be different for x < 0.06 and Q(2) < 1.5 GeV2. The observed difference is attributed to an A-dependence of the ratio R = sigma(L)/sigma(Gamma) of longitudinal to transverse deep-inelastic scattering cross sections at low x and low Q(2). (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：386 / 394

页数：9

共 48 条

[1] Measurements of R = σL/σT for 0.03 < x < 0.1 and fit to world data
Abe, K
Akagi, T
Anthony, PL
Antonov, R
Arnold, RG
Averett, T
Band, HR
Bauer, JM
Borel, H
Bosted, PE
Breton, V
Button-Shafer, J
Chen, JP
Chupp, TE
Clendenin, J
Comptour, C
Coulter, KP
Court, G
Crabb, D
Daoudi, M
Day, D
Dietrich, FS
Dunne, J
Dutz, H
Erbacher, R
Fellbaum, J
Feltham, A
Fonvieille, H
Frlez, E
Garvey, D
Gearhart, R
Gomez, J
Grenier, P
Griffioen, KA
Hoibraten, S
Hughes, EW
Hyde-Wright, C
Johnson, JR
Kawall, D
Klein, A
Kuhn, SE
Kuriki, M
Lindgren, R
Liu, TJ
Lombard-Nelsen, RM
Marroncle, J
Maruyama, T
Maruyama, XK
McCarthy, J
Meyer, W
[J]. PHYSICS LETTERS B, 1999, 452 (1-2) : 194 - 200
[2] The HERMES spectrometer
Ackerstaff, K
Airapetian, A
Akopov, N
Amarian, M
Andreev, V
Aschenauer, EC
Avakian, R
Avakian, H
Avetissian, A
Bains, B
Barrow, S
Beckhusen, W
Beckmann, M
Belostotski, S
Belz, E
Benisch, T
Bernreuther, S
Bianchi, N
Blouw, J
Bottcher, H
Borissov, A
Brack, J
Braun, B
Bray, B
Brons, S
Bruckner, W
Brull, A
Bulten, HJ
Capitani, GP
Carter, P
Chumney, P
Cisbani, E
Clark, S
Colilli, S
Coombes, H
Court, GR
Delheij, P
Devitsin, E
de Jager, CW
De Sanctis, E
De Schepper, D
Huberts, PKAD
Di Nezza, P
Doets, M
Duren, M
Dvoredsky, A
Elbakian, G
Emerson, J
Fantoni, A
Fechtchenko, A
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1998, 417 (2-3) : 230 - 265
[3] TOWARDS A MODEL-INDEPENDENT ANALYSIS OF RARE B-DECAYS
ALI, A
GIUDICE, GF
MANNEL, T
[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1995, 67 (03): : 417 - 432
[4] AKHUNDOV AA, 1977, SOV J NUCL PHYS+, V26, P660
[5] AKHUNDOV AA, 1986, SOV J NUCL PHYS+, V44, P988
[6] A REEVALUATION OF THE NUCLEAR-STRUCTURE FUNCTION RATIOS FOR D, HE, LI-6, C AND CA
AMAUDRUZ, P
ARNEODO, M
ARVIDSON, A
BADELEK, B
BALLINTIJN, M
BAUM, G
BEAUFAYS, J
BIRD, IG
BJORKHOLM, P
BOTJE, M
BROGGINI, C
BRUCKNER, W
BRULL, A
BURGER, WJ
CIBOROWSKI, J
VANDANTZIG, R
DOBBELING, H
DOMINGO, J
DRINKARD, J
DYRING, A
ENGELIEN, H
FERRERO, MI
FLURI, L
GAUL, U
GRAFSTROM, P
GRANIER, T
VONHARRACH, D
VANDERHEIJDEN, M
HEUSCH, C
INGRAM, Q
JANSONPRYTZ, K
DEJONG, M
KABUSS, EM
KAISER, R
KETEL, TJ
KLEIN, F
KORZEN, B
KRUNER, U
KULLANDER, S
LANDGRAF, U
LETTENSTROM, F
LINDQVIST, T
MALLOT, GK
MARIOTTI, C
VANMIDDELKOOP, G
MILSZTAJN, A
MIZUNO, Y
MOST, A
MUCKLICH, A
NASSALSKI, J
[J]. NUCLEAR PHYSICS B, 1995, 441 (1-2) : 3 - 11
[7] MEASUREMENTS OF RD-RP AND RCA-RC IN DEEP INELASTIC MUON SCATTERING
AMAUDRUZ, P
ARNEODO, M
ARVIDSON, A
BADELEK, B
BAUM, G
BEAUFAYS, J
BIRD, IG
BOTJE, M
BROGGINI, C
BRUCKNER, W
BRULL, A
BURGER, WJ
CIBOROWSKI, J
VANDANTZIG, R
DOBBELING, H
DOMINGO, J
DRINKARD, J
ENGELIEN, H
FERRERO, MI
FLURI, L
GRAFSTROM, P
GRANIER, T
VONHARRACH, D
VANDERHEIJDEN, M
HEUSCH, C
INGRAM, Q
JANSONPRYTZ, K
DEJONG, M
KABUSS, EM
KAISER, R
KETEL, TJ
KLEIN, F
KORZEN, B
KRUNER, U
KULLANDER, S
LANDGRAF, U
LETTENSTROM, F
LINDQVIST, T
MALLOT, GK
MARIOTTI, C
VANMIDDELKOOP, G
MILSZTAJN, A
MIZUNO, Y
NASSALSKI, J
NOWOTNY, D
PAVEL, N
PERONI, C
PESCHEL, H
POVH, B
RIEGER, R
[J]. PHYSICS LETTERS B, 1992, 294 (01) : 120 - 126
[8] ARENHOVEL H, 1998, COMMUNICATION
[9] NUCLEAR EFFECTS IN STRUCTURE FUNCTIONS
ARNEODO, M
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1994, 240 (5-6): : 301 - 393
[10] Arneodo M, 1996, NUCL PHYS B, V481, P23, DOI 10.1016/S0550-3213(96)90119-4

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