slf4j-apiのログがlogbackで出力されない

Question

下記コードのログが出力されません。
`
org.slf4j.LoggerFactory.getLogger("HOGE_LOGGER").info("fuga");

pom.xml:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.7.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
<version>1.7.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.1</version>
</dependency>

logback.xml
<appender name="HOGE_LOGGER" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>/logs/logback.log</file>
<append>true</append>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>/logs/logback.log.%d{yyyy-MM-dd}</fileNamePattern>
<maxHistory>30</maxHistory>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36}#%method - %message%n</pattern>
</encoder>
</appender>

<root level="INFO"> <appender-ref ref="HOGE_LOGGER" /> </root> `