140:
266:
25:
316:
479:) has studied this with inconclusive results in the antishadowing region and with no results in the "EMC effect" region. SeaQuest will be able to yield more statistically precise results regarding the antishadowing region, and will be able to probe into the "EMC effect" region, where no Drell–Yan data has yet been seen.
437:
351:'s in the proton. The Gottfried sum evaluated by NMC from the data of deep inelastic muon scattering on a proton and a deuteron targets was 0.235±0.026 which is smaller than the expected value of 0.333. This means that
307:. It will use a 120 GeV proton beam extracted from the Fermilab Main Injector. The experiment will also examine the modifications to the antiquark structure of the proton from nuclear binding.
654:
371:
from 0 to 1.0 is 0.147±0.039, indicating a flavor asymmetry in the proton sea. In the early 1990s, DYSSIS (CERN-NA51) made a measurement of Drell–Yan process in the low
Bjorken
841:
343:, respectively) were produced in the nucleon sea with a ratio of 1. However, the result of deep inelastic scattering experiment by CERN-NMC showed that there are more
896:
289:
structure of the nucleon and the modifications to that structure. With these measurements, SeaQuest will also be able to quantify the energy loss of a
509:
539:
89:
61:
504:
108:
68:
524:
46:
39:
957:
75:
986:
981:
554:
391:, which further showed an asymmetry in the antiquark production. SeaQuest will extend the measurements to higher Bjorken
809:
Aubert, J.J.; Bassompierre, G.; Becks, K.H.; Best, C.; Böhm, E.; et al. (CERN European Muon
Collaboration) (1983).
489:
499:
460:
57:
580:
475:. Three main features are the shadowing, antishadowing, and the "EMC effect". A previous Drell–Yan experiment (
660:
35:
534:
529:
514:
427:
384:
290:
762:"Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan process"
607:
426:—do not interact strongly with the rest of the nuclear medium, there is no further loss of energy due to
411:
278:
242:
170:
703:
Arneodo, M.; Arvidson, A.; Badelek, B.; Ballintijn, M.; Baum, G.; et al. (CERN NMC) (1994-07-01).
82:
300:
SeaQuest has been approved by
Fermilab to extend previous down to up antiquark measurements to larger
905:
856:
775:
718:
602:
Amaudruz, P.; Arneodo, M.; Arvidson, A.; Badelek, B.; Baum, G.; et al. (CERN NMC) (1991-05-27).
230:
476:
226:
559:
549:
294:
814:
760:
Baldit, A.; Barrière, C.; Castor, J.; Chambon, T.; Devaux, A.; et al. (CERN NA51) (1994).
444:
301:
976:
923:
872:
847:
791:
766:
742:
734:
709:
685:
677:
913:
864:
783:
726:
669:
216:
961:
494:
440:
918:
909:
891:
860:
779:
722:
468:
430:
254:
215:
To measure the asymmetry of up and down antiquarks in the nucleon sea using Drell–Yan
970:
868:
787:
253:
and how this structure is modified when the proton or neutron is included within an
139:
265:
954:
949:
673:
24:
453:
315:
945:
927:
876:
795:
738:
681:
286:
181:
746:
730:
704:
689:
395:, which will help resolve questions about the behavior of this ratio above
414:
is particularly well-suited to carry out a measurement of energy loss of
274:
238:
197:
185:
158:
588:
464:
418:
as they propagate through nuclear matter. Since the products—a virtual
250:
436:
423:
419:
415:
246:
189:
810:
761:
603:
245:
to measure the contributions of antiquarks to the structure of the
544:
472:
435:
314:
282:
264:
459:
In studying a free nucleon and a nucleon bound in a nucleus, the
319:
SeaQuest expected uncertainties for extending to higher
Bjorken x
471:
have a different distribution of momentum among their component
193:
241:
E-906/SeaQuest is a particle physics experiment which will use
519:
277:
E-906/SeaQuest experiment is part of a series of fixed target
18:
955:
SeaQuest
Research Project at Nuclear Physics Group Illinois
817:
610:
222:
211:
203:
176:
165:
154:
149:
123:
835:
648:
375:region that tilted the ratio in favor of a higher
335:Originally it was thought down and up antiquarks (
811:"The ratio of the nucleon structure functions
897:Annual Review of Nuclear and Particle Science
890:Geesaman, D F; Saito, K; Thomas, A W (1995).
8:
581:"Argonne Physics Division - E-906/SeaQuest"
387:yielded results in a range of low Bjorken
917:
827:
822:
816:
640:
635:
626:
620:
615:
609:
109:Learn how and when to remove this message
572:
120:
45:Please improve this article by adding
510:Fermi National Accelerator Laboratory
7:
540:National Kaohsiung Normal University
281:experiments designed to measure the
919:10.1146/annurev.ns.45.120195.002005
705:"Reevaluation of the Gottfried sum"
649:{\displaystyle F_{2}^{n}/F_{2}^{p}}
14:
293:(quark) travelling through cold,
138:
23:
604:"Gottfried sum from the ratio
525:Los Alamos National Laboratory
406:Partons in cold nuclear matter
1:
555:Tokyo Institute of Technology
47:secondary or tertiary sources
869:10.1016/0370-2693(83)90437-9
788:10.1016/0370-2693(94)90884-2
490:Abilene Christian University
144:Tentative collaboration logo
674:10.1103/physrevlett.66.2712
500:Argonne National Laboratory
461:European Muon Collaboration
16:Particle physics experiment
1003:
367:) integrated over Bjorken
836:{\displaystyle F_{2}^{N}}
137:
128:
58:"Fermilab E-906/SeaQuest"
892:"The Nuclear EMC Effect"
269:E-906 Spectrometer Image
843:for iron and deuterium"
661:Physical Review Letters
837:
731:10.1103/physrevd.50.r1
650:
535:University of Michigan
530:University of Maryland
515:University of Illinois
505:University of Colorado
452:Antishadowing and the
448:
383:. Experiments such as
320:
270:
150:Experiment Information
34:relies excessively on
838:
651:
439:
318:
268:
987:Fermilab experiments
982:Particle experiments
815:
608:
385:Fermilab E-866/NuSea
295:strongly-interacting
910:1995ARNPS..45..337G
861:1983PhLB..123..275A
832:
780:1994PhLB..332..244B
723:1994PhRvD..50....1A
645:
625:
560:Yamagata University
311:Physics motivations
960:2021-10-20 at the
833:
818:
646:
631:
611:
550:Rutgers University
449:
321:
271:
848:Physics Letters B
767:Physics Letters B
710:Physical Review D
668:(21): 2712–2715.
412:Drell–Yan process
243:Drell–Yan process
236:
235:
133:
119:
118:
111:
93:
994:
932:
931:
921:
887:
881:
880:
855:(3–4): 275–278.
842:
840:
839:
834:
831:
826:
806:
800:
799:
774:(1–2): 244–250.
757:
751:
750:
700:
694:
693:
655:
653:
652:
647:
644:
639:
630:
624:
619:
599:
593:
592:
587:. Archived from
577:
401:
382:
378:
362:
354:
350:
346:
342:
338:
330:
326:
142:
129:
121:
114:
107:
103:
100:
94:
92:
51:
27:
19:
1002:
1001:
997:
996:
995:
993:
992:
991:
967:
966:
962:Wayback Machine
941:
936:
935:
889:
888:
884:
813:
812:
808:
807:
803:
759:
758:
754:
702:
701:
697:
606:
605:
601:
600:
596:
585:www.phy.anl.gov
579:
578:
574:
569:
564:
495:Academia Sinica
485:
457:
441:Feynman diagram
408:
396:
380:
376:
360:
352:
348:
344:
340:
336:
333:
328:
324:
313:
263:
231:Don F. Geesaman
145:
115:
104:
98:
95:
52:
50:
44:
40:primary sources
28:
17:
12:
11:
5:
1000:
998:
990:
989:
984:
979:
969:
968:
965:
964:
952:
948:experiment on
940:
939:External links
937:
934:
933:
904:(1): 337–390.
882:
830:
825:
821:
801:
752:
695:
643:
638:
634:
629:
623:
618:
614:
594:
591:on 2010-05-27.
571:
570:
568:
565:
563:
562:
557:
552:
547:
542:
537:
532:
527:
522:
517:
512:
507:
502:
497:
492:
486:
484:
481:
477:Fermilab E-772
456:
450:
431:bremsstrahlung
407:
404:
332:
322:
312:
309:
291:colored parton
262:
259:
255:atomic nucleus
234:
233:
227:Paul E. Reimer
224:
223:Spokespersons:
220:
219:
213:
209:
208:
205:
201:
200:
178:
174:
173:
167:
163:
162:
156:
152:
151:
147:
146:
143:
135:
134:
126:
125:
117:
116:
99:September 2010
31:
29:
22:
15:
13:
10:
9:
6:
4:
3:
2:
999:
988:
985:
983:
980:
978:
975:
974:
972:
963:
959:
956:
953:
951:
947:
943:
942:
938:
929:
925:
920:
915:
911:
907:
903:
899:
898:
893:
886:
883:
878:
874:
870:
866:
862:
858:
854:
850:
849:
844:
828:
823:
819:
805:
802:
797:
793:
789:
785:
781:
777:
773:
769:
768:
763:
756:
753:
748:
744:
740:
736:
732:
728:
724:
720:
716:
712:
711:
706:
699:
696:
691:
687:
683:
679:
675:
671:
667:
663:
662:
657:
641:
636:
632:
627:
621:
616:
612:
598:
595:
590:
586:
582:
576:
573:
566:
561:
558:
556:
553:
551:
548:
546:
543:
541:
538:
536:
533:
531:
528:
526:
523:
521:
518:
516:
513:
511:
508:
506:
503:
501:
498:
496:
493:
491:
488:
487:
483:Collaboration
482:
480:
478:
474:
470:
466:
462:
455:
451:
446:
442:
438:
434:
432:
429:
425:
421:
417:
413:
405:
403:
399:
394:
390:
386:
374:
370:
366:
358:
323:
317:
310:
308:
306:
305:
298:
296:
292:
288:
284:
280:
276:
267:
260:
258:
256:
252:
248:
244:
240:
232:
228:
225:
221:
218:
214:
212:Physics Goal:
210:
206:
202:
199:
195:
191:
187:
183:
179:
175:
172:
169:Fixed Target
168:
164:
160:
157:
153:
148:
141:
136:
132:
127:
122:
113:
110:
102:
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
42:
41:
37:
32:This article
30:
26:
21:
20:
901:
895:
885:
852:
846:
804:
771:
765:
755:
717:(1): R1–R3.
714:
708:
698:
665:
659:
597:
589:the original
584:
575:
458:
409:
397:
392:
388:
379:number than
372:
368:
364:
356:
334:
303:
299:
272:
237:
204:Beam Energy:
130:
105:
96:
86:
79:
72:
65:
53:
33:
950:INSPIRE-HEP
944:Record for
463:found that
161:, NM4 Bldg.
971:Categories
567:References
454:EMC effect
131:FNAL E-906
69:newspapers
36:references
928:0163-8998
877:0370-2693
796:0370-2693
739:0556-2821
682:0031-9007
467:inside a
445:Drell–Yan
331:asymmetry
287:antiquark
279:Drell–Yan
184:, liquid
182:Deuterium
171:Drell–Yan
155:Location:
977:Fermilab
958:Archived
747:10017566
690:10043597
465:nucleons
422:and two
347:'s than
302:Bjorken
297:matter.
275:Fermilab
261:Overview
239:Fermilab
198:Tungsten
196:, solid
192:, solid
188:, solid
186:Hydrogen
177:Targets:
159:Fermilab
124:SeaQuest
906:Bibcode
857:Bibcode
776:Bibcode
719:Bibcode
469:nucleus
447:process
443:of the
424:leptons
251:neutron
217:dimuons
207:120 GeV
180:Liquid
83:scholar
946:E-0906
926:
875:
794:
745:
737:
688:
680:
473:quarks
420:photon
416:quarks
247:proton
190:Carbon
85:
78:
71:
64:
56:
545:RIKEN
400:≈ 0.3
283:quark
166:Type:
90:JSTOR
76:books
924:ISSN
873:ISSN
792:ISSN
743:PMID
735:ISSN
686:PMID
678:ISSN
410:The
339:and
285:and
273:The
229:and
194:Iron
62:news
914:doi
865:doi
853:123
784:doi
772:332
727:doi
670:doi
520:KEK
428:QCD
249:or
38:to
973::
922:.
912:.
902:45
900:.
894:.
871:.
863:.
851:.
845:.
790:.
782:.
770:.
764:.
741:.
733:.
725:.
715:50
713:.
707:.
684:.
676:.
666:66
664:.
658:.
583:.
433:.
402:.
359:)-
257:.
49:.
930:.
916::
908::
879:.
867::
859::
829:N
824:2
820:F
798:.
786::
778::
749:.
729::
721::
692:.
672::
656:"
642:p
637:2
633:F
628:/
622:n
617:2
613:F
398:x
393:x
389:x
381:u
377:d
373:x
369:x
365:x
363:(
361:u
357:x
355:(
353:d
349:u
345:d
341:u
337:d
329:u
327:/
325:d
304:x
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
43:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
