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Title of Journal: Nuov Cim A

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Abbravation: Il Nuovo Cimento A (1965-1970)

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Società Italiana di Fisica

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DOI

10.1002/ange.201500727

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ISSN

1826-9869

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Charge symmetry and neutral current in a unified m

Authors: Fayyazuddin Riazuddin
Publish Date: 2007/11/24
Volume: 23, Issue: 1, Pages: 33-50
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Abstract

It is pointed out that measurement of the ratio ie331 and theV — A interference term for the highenergy inclusive processes ie332 + anything ie333 is the protonneutron average can give an estimate of the violation of charge symmetry in these processes We then give an expression for charge symmetry violation in terms of experimentally measured structure functions above the charm threshold for the above processes for the SalamWeinberg model In addition we give predictions for the neutral current for the processes ie334 + anything below and above the charm threshold for charged currents It is pointed out that the predictions for the neutral current below the charm threshold are the same as those due to a phenomenological neutral current withSU3 structure ie335 We use lightcone algebra to obtain our results in the scaling regionОтмечается что иэмерение отнощения ie507 иV — A интерференционного члена для инклюэивных процессов при высоких знергиях ie508 + чтонибудь где ie509 представляет среднее протоновнейтронов может дать оценку для нарущения эарядовой симметрии в зтих процессах Затем мы приводим выражение для нарущения эарядовой симметрии в виде зкспериментально иэмеренных структурных функций выще порога для приведенных выще процессов для модели СаламаВейнберга Кроме того мы делаем предскаэания для нейтрального тока для процесса ie5010 + чтонибудь для эаряженных токов ниже и выще порога Отмечается что предскаэания для нейтрального тока ниже порога совпадают с предскаэаниями феноменологического нейтрального тока сSU3 структурой ie5011 Мы испольэуем алгебру на световом конусе для получения нащих реэультатов в области подобияSi puntualizza il fatto che una misura del rapporto ie501 e del termine di interferenzaV — A per le reazioni inclusive di alta energia ie502 + altro ie503 sta per la media protoneneutrone può fornire una stima della violazione della simmetria di carica in queste reazioni Si dà quindi un’espressione per la violazione della simmetria di carica in funzione di funzioni di struttura misurate sperimentalmente prima della soglia di incanto per i processi precedenti per il modello di SalamWeinberg Inoltre si fanno previsioni sulle correnti neutre per le reazioni ie504 + altro prima e dopo la soglia di incanto per correnti cariche Si puntualizza che le previsioni per le correnti neutre sotto la soglia di incanto sono le stesse di quelle per la corrente neutra fenomenologica con struttura diSU3 ie505 in cui ie506 Si usa l’algebra del cono di luce per ottenere i nostri risultati nella regione di scala

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